From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- toolkit/components/ctypes/ctypes.cpp | 151 ++ toolkit/components/ctypes/ctypes.h | 30 + toolkit/components/ctypes/ctypes.jsm | 23 + toolkit/components/ctypes/moz.build | 24 + .../components/ctypes/tests/chrome/.eslintrc.js | 7 + toolkit/components/ctypes/tests/chrome/chrome.ini | 8 + .../ctypes/tests/chrome/ctypes_worker.js | 14 + .../components/ctypes/tests/chrome/test_ctypes.xul | 106 + .../tests/chrome/xpcshellTestHarnessAdaptor.js | 100 + .../ctypes/tests/jsctypes-test-errno.cpp | 41 + .../components/ctypes/tests/jsctypes-test-errno.h | 21 + .../ctypes/tests/jsctypes-test-finalizer.cpp | 323 +++ .../ctypes/tests/jsctypes-test-finalizer.h | 57 + toolkit/components/ctypes/tests/jsctypes-test.cpp | 394 +++ toolkit/components/ctypes/tests/jsctypes-test.h | 197 ++ toolkit/components/ctypes/tests/moz.build | 30 + toolkit/components/ctypes/tests/unit/.eslintrc.js | 7 + toolkit/components/ctypes/tests/unit/head.js | 128 + toolkit/components/ctypes/tests/unit/test_errno.js | 69 + .../components/ctypes/tests/unit/test_finalizer.js | 452 ++++ .../tests/unit/test_finalizer_shouldaccept.js | 174 ++ .../ctypes/tests/unit/test_finalizer_shouldfail.js | 176 ++ .../components/ctypes/tests/unit/test_jsctypes.js | 2808 ++++++++++++++++++++ toolkit/components/ctypes/tests/unit/xpcshell.ini | 13 + 24 files changed, 5353 insertions(+) create mode 100644 toolkit/components/ctypes/ctypes.cpp create mode 100644 toolkit/components/ctypes/ctypes.h create mode 100644 toolkit/components/ctypes/ctypes.jsm create mode 100644 toolkit/components/ctypes/moz.build create mode 100644 toolkit/components/ctypes/tests/chrome/.eslintrc.js create mode 100644 toolkit/components/ctypes/tests/chrome/chrome.ini create mode 100644 toolkit/components/ctypes/tests/chrome/ctypes_worker.js create mode 100644 toolkit/components/ctypes/tests/chrome/test_ctypes.xul create mode 100644 toolkit/components/ctypes/tests/chrome/xpcshellTestHarnessAdaptor.js create mode 100644 toolkit/components/ctypes/tests/jsctypes-test-errno.cpp create mode 100644 toolkit/components/ctypes/tests/jsctypes-test-errno.h create mode 100644 toolkit/components/ctypes/tests/jsctypes-test-finalizer.cpp create mode 100644 toolkit/components/ctypes/tests/jsctypes-test-finalizer.h create mode 100644 toolkit/components/ctypes/tests/jsctypes-test.cpp create mode 100644 toolkit/components/ctypes/tests/jsctypes-test.h create mode 100644 toolkit/components/ctypes/tests/moz.build create mode 100644 toolkit/components/ctypes/tests/unit/.eslintrc.js create mode 100644 toolkit/components/ctypes/tests/unit/head.js create mode 100644 toolkit/components/ctypes/tests/unit/test_errno.js create mode 100644 toolkit/components/ctypes/tests/unit/test_finalizer.js create mode 100644 toolkit/components/ctypes/tests/unit/test_finalizer_shouldaccept.js create mode 100644 toolkit/components/ctypes/tests/unit/test_finalizer_shouldfail.js create mode 100644 toolkit/components/ctypes/tests/unit/test_jsctypes.js create mode 100644 toolkit/components/ctypes/tests/unit/xpcshell.ini (limited to 'toolkit/components/ctypes') diff --git a/toolkit/components/ctypes/ctypes.cpp b/toolkit/components/ctypes/ctypes.cpp new file mode 100644 index 000000000..249e26983 --- /dev/null +++ b/toolkit/components/ctypes/ctypes.cpp @@ -0,0 +1,151 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "ctypes.h" +#include "jsapi.h" +#include "mozilla/ModuleUtils.h" +#include "nsMemory.h" +#include "nsString.h" +#include "nsNativeCharsetUtils.h" +#include "mozilla/Preferences.h" +#include "mozJSComponentLoader.h" +#include "nsZipArchive.h" +#include "xpc_make_class.h" + +#define JSCTYPES_CONTRACTID \ + "@mozilla.org/jsctypes;1" + + +#define JSCTYPES_CID \ +{ 0xc797702, 0x1c60, 0x4051, { 0x9d, 0xd7, 0x4d, 0x74, 0x5, 0x60, 0x56, 0x42 } } + +namespace mozilla { +namespace ctypes { + +static char* +UnicodeToNative(JSContext *cx, const char16_t *source, size_t slen) +{ + nsAutoCString native; + nsDependentString unicode(reinterpret_cast(source), slen); + nsresult rv = NS_CopyUnicodeToNative(unicode, native); + if (NS_FAILED(rv)) { + JS_ReportErrorASCII(cx, "could not convert string to native charset"); + return nullptr; + } + + char* result = static_cast(JS_malloc(cx, native.Length() + 1)); + if (!result) + return nullptr; + + memcpy(result, native.get(), native.Length() + 1); + return result; +} + +static JSCTypesCallbacks sCallbacks = { + UnicodeToNative +}; + +NS_GENERIC_FACTORY_CONSTRUCTOR(Module) + +NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable) + +Module::Module() +{ +} + +Module::~Module() +{ +} + +#define XPC_MAP_CLASSNAME Module +#define XPC_MAP_QUOTED_CLASSNAME "Module" +#define XPC_MAP_WANT_CALL +#define XPC_MAP_FLAGS nsIXPCScriptable::WANT_CALL +#include "xpc_map_end.h" + +static bool +SealObjectAndPrototype(JSContext* cx, JS::Handle parent, const char* name) +{ + JS::Rooted prop(cx); + if (!JS_GetProperty(cx, parent, name, &prop)) + return false; + + if (prop.isUndefined()) { + // Pretend we sealed the object. + return true; + } + + JS::Rooted obj(cx, prop.toObjectOrNull()); + if (!JS_GetProperty(cx, obj, "prototype", &prop)) + return false; + + JS::Rooted prototype(cx, prop.toObjectOrNull()); + return JS_FreezeObject(cx, obj) && JS_FreezeObject(cx, prototype); +} + +static bool +InitAndSealCTypesClass(JSContext* cx, JS::Handle global) +{ + // Init the ctypes object. + if (!JS_InitCTypesClass(cx, global)) + return false; + + // Set callbacks for charset conversion and such. + JS::Rooted ctypes(cx); + if (!JS_GetProperty(cx, global, "ctypes", &ctypes)) + return false; + + JS_SetCTypesCallbacks(ctypes.toObjectOrNull(), &sCallbacks); + + // Seal up Object, Function, Array and Error and their prototypes. (This + // single object instance is shared amongst everyone who imports the ctypes + // module.) + if (!SealObjectAndPrototype(cx, global, "Object") || + !SealObjectAndPrototype(cx, global, "Function") || + !SealObjectAndPrototype(cx, global, "Array") || + !SealObjectAndPrototype(cx, global, "Error")) + return false; + + return true; +} + +NS_IMETHODIMP +Module::Call(nsIXPConnectWrappedNative* wrapper, + JSContext* cx, + JSObject* obj, + const JS::CallArgs& args, + bool* _retval) +{ + mozJSComponentLoader* loader = mozJSComponentLoader::Get(); + JS::Rooted targetObj(cx); + nsresult rv = loader->FindTargetObject(cx, &targetObj); + NS_ENSURE_SUCCESS(rv, rv); + + *_retval = InitAndSealCTypesClass(cx, targetObj); + return NS_OK; +} + +} // namespace ctypes +} // namespace mozilla + +NS_DEFINE_NAMED_CID(JSCTYPES_CID); + +static const mozilla::Module::CIDEntry kCTypesCIDs[] = { + { &kJSCTYPES_CID, false, nullptr, mozilla::ctypes::ModuleConstructor }, + { nullptr } +}; + +static const mozilla::Module::ContractIDEntry kCTypesContracts[] = { + { JSCTYPES_CONTRACTID, &kJSCTYPES_CID }, + { nullptr } +}; + +static const mozilla::Module kCTypesModule = { + mozilla::Module::kVersion, + kCTypesCIDs, + kCTypesContracts +}; + +NSMODULE_DEFN(jsctypes) = &kCTypesModule; diff --git a/toolkit/components/ctypes/ctypes.h b/toolkit/components/ctypes/ctypes.h new file mode 100644 index 000000000..b72f22c1c --- /dev/null +++ b/toolkit/components/ctypes/ctypes.h @@ -0,0 +1,30 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef COMPONENTS_CTYPES_H +#define COMPONENTS_CTYPES_H + +#include "nsIXPCScriptable.h" +#include "mozilla/Attributes.h" + +namespace mozilla { +namespace ctypes { + +class Module final : public nsIXPCScriptable +{ +public: + NS_DECL_ISUPPORTS + NS_DECL_NSIXPCSCRIPTABLE + + Module(); + +private: + ~Module(); +}; + +} // namespace ctypes +} // namespace mozilla + +#endif diff --git a/toolkit/components/ctypes/ctypes.jsm b/toolkit/components/ctypes/ctypes.jsm new file mode 100644 index 000000000..f22d01184 --- /dev/null +++ b/toolkit/components/ctypes/ctypes.jsm @@ -0,0 +1,23 @@ +/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +this.EXPORTED_SYMBOLS = [ "ctypes" ]; + +/* + * This is the js module for ctypes. Import it like so: + * Components.utils.import("resource://gre/modules/ctypes.jsm"); + * + * This will create a 'ctypes' object, which provides an interface to describe + * and instantiate C types and call C functions from a dynamic library. + * + * For documentation on the API, see: + * https://developer.mozilla.org/en/js-ctypes/js-ctypes_reference + * + */ + +// Initialize the ctypes object. You do not need to do this yourself. +const init = Components.classes["@mozilla.org/jsctypes;1"].createInstance(); +init(); + diff --git a/toolkit/components/ctypes/moz.build b/toolkit/components/ctypes/moz.build new file mode 100644 index 000000000..c79110eeb --- /dev/null +++ b/toolkit/components/ctypes/moz.build @@ -0,0 +1,24 @@ +# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*- +# vim: set filetype=python: +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +TEST_DIRS += ['tests'] + +SOURCES += [ + 'ctypes.cpp', +] + +LOCAL_INCLUDES += [ + '/js/xpconnect/loader', +] + +EXTRA_JS_MODULES += [ + 'ctypes.jsm', +] + +FINAL_LIBRARY = 'xul' + +with Files('**'): + BUG_COMPONENT = ('Core', 'js-ctypes') diff --git a/toolkit/components/ctypes/tests/chrome/.eslintrc.js b/toolkit/components/ctypes/tests/chrome/.eslintrc.js new file mode 100644 index 000000000..8c0f4f574 --- /dev/null +++ b/toolkit/components/ctypes/tests/chrome/.eslintrc.js @@ -0,0 +1,7 @@ +"use strict"; + +module.exports = { + "extends": [ + "../../../../../testing/mochitest/chrome.eslintrc.js" + ] +}; diff --git a/toolkit/components/ctypes/tests/chrome/chrome.ini b/toolkit/components/ctypes/tests/chrome/chrome.ini new file mode 100644 index 000000000..e34866be2 --- /dev/null +++ b/toolkit/components/ctypes/tests/chrome/chrome.ini @@ -0,0 +1,8 @@ +[DEFAULT] +skip-if = os == 'android' +support-files = + xpcshellTestHarnessAdaptor.js + ctypes_worker.js + ../unit/test_jsctypes.js + +[test_ctypes.xul] diff --git a/toolkit/components/ctypes/tests/chrome/ctypes_worker.js b/toolkit/components/ctypes/tests/chrome/ctypes_worker.js new file mode 100644 index 000000000..ff128a758 --- /dev/null +++ b/toolkit/components/ctypes/tests/chrome/ctypes_worker.js @@ -0,0 +1,14 @@ +/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +importScripts("xpcshellTestHarnessAdaptor.js"); + +onmessage = function(event) { + _WORKINGDIR_ = event.data.dir; + _OS_ = event.data.os; + importScripts("test_jsctypes.js"); + run_test(); + postMessage("Done!"); +} diff --git a/toolkit/components/ctypes/tests/chrome/test_ctypes.xul b/toolkit/components/ctypes/tests/chrome/test_ctypes.xul new file mode 100644 index 000000000..bbe7fb0c9 --- /dev/null +++ b/toolkit/components/ctypes/tests/chrome/test_ctypes.xul @@ -0,0 +1,106 @@ + + + + + + + + +

+ + 

+  
+  
diff --git a/toolkit/components/ctypes/tests/chrome/xpcshellTestHarnessAdaptor.js b/toolkit/components/ctypes/tests/chrome/xpcshellTestHarnessAdaptor.js
new file mode 100644
index 000000000..eec85025b
--- /dev/null
+++ b/toolkit/components/ctypes/tests/chrome/xpcshellTestHarnessAdaptor.js
@@ -0,0 +1,100 @@
+/* -*-  indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+var _WORKINGDIR_ = null;
+var _OS_ = null;
+
+var Components = {
+  classes: { },
+  interfaces: { },
+  stack: {
+    caller: null
+  },
+  utils: {
+    import: function() { }
+  }
+};
+
+function do_throw(message, stack) {
+  do_print("error: " + message);
+  do_print("stack: " + (stack ? stack : new Error().stack));
+  throw message;
+}
+
+function do_check_neq(left, right, stack) {
+  if (left == right) {
+    var text = "do_check_neq failed";
+    try {
+      text += ": " + left + " == " + right;
+    } catch (e) {
+    }
+    do_throw(text, stack);
+  }
+}
+
+function do_check_eq(left, right, stack) {
+  if (left != right) {
+    var text = "do_check_eq failed";
+    try {
+      text += ": " + left + " != " + right;
+    } catch (e) {
+    }
+    do_throw(text, stack);
+  }
+}
+
+function do_check_true(condition, stack) {
+  do_check_eq(condition, true, stack);
+}
+
+function do_check_false(condition, stack) {
+  do_check_eq(condition, false, stack);
+}
+
+function do_print(text) {
+  dump("INFO: " + text + "\n");
+}
+
+function FileFaker(path) {
+  this._path = path;
+}
+FileFaker.prototype = {
+  get path() {
+    return this._path;
+  },
+  get parent() {
+    let lastSlash = this._path.lastIndexOf("/");
+    if (lastSlash == -1) {
+      return "";
+    }
+    this._path = this._path.substring(0, lastSlash);
+    return this;
+  },
+  append: function(leaf) {
+    this._path = this._path + "/" + leaf;
+  }
+};
+
+function do_get_file(path, allowNonexistent) {
+  if (!_WORKINGDIR_) {
+    do_throw("No way to fake files if working directory is unknown!");
+  }
+
+  let lf = new FileFaker(_WORKINGDIR_);
+  let bits = path.split("/");
+  for (let i = 0; i < bits.length; i++) {
+    if (bits[i]) {
+      if (bits[i] == "..")
+        lf = lf.parent;
+      else
+        lf.append(bits[i]);
+    }
+  }
+  return lf;
+}
+
+function get_os() {
+  return _OS_;
+}
diff --git a/toolkit/components/ctypes/tests/jsctypes-test-errno.cpp b/toolkit/components/ctypes/tests/jsctypes-test-errno.cpp
new file mode 100644
index 000000000..83a29e632
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test-errno.cpp
@@ -0,0 +1,41 @@
+/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include 
+#include 
+#if defined(XP_WIN)
+#include 
+#endif // defined(XP_WIN)
+
+#include "jsctypes-test-errno.h"
+
+
+
+#define FAIL \
+{ \
+  fprintf(stderr, "Assertion failed at line %i\n", __LINE__); \
+  (*(int*)nullptr)++; \
+}
+
+
+void set_errno(int status)
+{
+  errno = status;
+}
+int get_errno()
+{
+  return errno;
+}
+
+#if defined(XP_WIN)
+void set_last_error(int status)
+{
+  SetLastError((int)status);
+}
+int get_last_error()
+{
+  return (int)GetLastError();
+}
+#endif // defined(XP_WIN)
diff --git a/toolkit/components/ctypes/tests/jsctypes-test-errno.h b/toolkit/components/ctypes/tests/jsctypes-test-errno.h
new file mode 100644
index 000000000..4d11b905b
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test-errno.h
@@ -0,0 +1,21 @@
+/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Types.h"
+
+#define EXPORT_CDECL(type)   MOZ_EXPORT type
+
+MOZ_BEGIN_EXTERN_C
+
+  EXPORT_CDECL(void) set_errno(int status);
+  EXPORT_CDECL(int) get_errno();
+
+#if defined(XP_WIN)
+  EXPORT_CDECL(void) set_last_error(int status);
+  EXPORT_CDECL(int) get_last_error();
+#endif // defined(XP_WIN)
+
+MOZ_END_EXTERN_C
diff --git a/toolkit/components/ctypes/tests/jsctypes-test-finalizer.cpp b/toolkit/components/ctypes/tests/jsctypes-test-finalizer.cpp
new file mode 100644
index 000000000..79e21cc89
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test-finalizer.cpp
@@ -0,0 +1,323 @@
+#include "errno.h"
+
+#include "jsctypes-test.h"
+#include "jsctypes-test-finalizer.h"
+
+/**
+ * Shared infrastructure
+ */
+
+
+/**
+ * An array of integers representing resources.
+ * - 0: unacquired
+ * - 1: acquired
+ * - < 0: error, resource has been released several times.
+ */
+int *gFinalizerTestResources = nullptr;
+char **gFinalizerTestNames = nullptr;
+size_t gFinalizerTestSize;
+
+void
+test_finalizer_start(size_t size)
+{
+  gFinalizerTestResources = new int[size];
+  gFinalizerTestNames = new char*[size];
+  gFinalizerTestSize = size;
+  for (size_t i = 0; i < size; ++i) {
+    gFinalizerTestResources[i] = 0;
+    gFinalizerTestNames[i] = nullptr;
+  }
+}
+
+void
+test_finalizer_stop()
+{
+  delete[] gFinalizerTestResources;
+}
+
+/**
+ * Check if an acquired resource has been released
+ */
+bool
+test_finalizer_resource_is_acquired(size_t i)
+{
+  return gFinalizerTestResources[i] == 1;
+}
+// Resource type: size_t
+
+// Acquire resource i
+size_t
+test_finalizer_acq_size_t(size_t i)
+{
+  gFinalizerTestResources[i] = 1;
+  return i;
+}
+
+// Release resource i
+void
+test_finalizer_rel_size_t(size_t i)
+{
+  if (--gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+}
+
+size_t
+test_finalizer_rel_size_t_return_size_t(size_t i)
+{
+  if (-- gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+  return i;
+}
+
+myRECT
+test_finalizer_rel_size_t_return_struct_t(size_t i)
+{
+  if (-- gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+  const int32_t narrowed = (int32_t)i;
+  myRECT result = { narrowed, narrowed, narrowed, narrowed };
+  return result;
+}
+
+bool
+test_finalizer_cmp_size_t(size_t a, size_t b)
+{
+  return a==b;
+}
+
+// Resource type: int32_t
+
+// Acquire resource i
+int32_t
+test_finalizer_acq_int32_t(size_t i)
+{
+  gFinalizerTestResources[i] = 1;
+  return i;
+}
+
+// Release resource i
+void
+test_finalizer_rel_int32_t(int32_t i)
+{
+  if (--gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+}
+
+bool
+test_finalizer_cmp_int32_t(int32_t a, int32_t b)
+{
+  return a==b;
+}
+
+// Resource type: int64_t
+
+// Acquire resource i
+int64_t
+test_finalizer_acq_int64_t(size_t i)
+{
+  gFinalizerTestResources[i] = 1;
+  return i;
+}
+
+// Release resource i
+void
+test_finalizer_rel_int64_t(int64_t i)
+{
+  if (-- gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+}
+
+bool
+test_finalizer_cmp_int64_t(int64_t a, int64_t b)
+{
+  return a==b;
+}
+
+// Resource type: void*
+
+// Acquire resource i
+void*
+test_finalizer_acq_ptr_t(size_t i)
+{
+  gFinalizerTestResources[i] = 1;
+  return (void*)&gFinalizerTestResources[i];
+}
+
+// Release resource i
+void
+test_finalizer_rel_ptr_t(void *i)
+{
+  int *as_int = (int*)i;
+  -- (*as_int);
+  if (*as_int < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+}
+
+bool
+test_finalizer_cmp_ptr_t(void *a, void *b)
+{
+  return a==b;
+}
+
+// Resource type: int32_t*
+
+// Acquire resource i
+int32_t*
+test_finalizer_acq_int32_ptr_t(size_t i)
+{
+  gFinalizerTestResources[i] = 1;
+  return (int32_t*)&gFinalizerTestResources[i];
+}
+
+// Release resource i
+void
+test_finalizer_rel_int32_ptr_t(int32_t *i)
+{
+  -- (*i);
+  if (*i < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+}
+
+bool
+test_finalizer_cmp_int32_ptr_t(int32_t *a, int32_t *b)
+{
+  return a==b;
+}
+
+// Resource type: nullptr
+
+// Acquire resource i
+void*
+test_finalizer_acq_null_t(size_t i)
+{
+  gFinalizerTestResources[0] = 1;//Always index 0
+  return nullptr;
+}
+
+// Release resource i
+void
+test_finalizer_rel_null_t(void *i)
+{
+  if (i != nullptr) {
+    MOZ_CRASH("Assertion failed");
+  }
+  gFinalizerTestResources[0] --;
+}
+
+bool
+test_finalizer_null_resource_is_acquired(size_t)
+{
+  return gFinalizerTestResources[0] == 1;
+}
+
+bool
+test_finalizer_cmp_null_t(void *a, void *b)
+{
+  return a==b;
+}
+
+// Resource type: char*
+
+// Acquire resource i
+char*
+test_finalizer_acq_string_t(int i)
+{
+  gFinalizerTestResources[i] = 1;
+  if (!gFinalizerTestNames[i]) {
+    char* buf = new char[10];
+    snprintf(buf, 10, "%d", i);
+    gFinalizerTestNames[i] = buf;
+    return buf;
+  }
+  return gFinalizerTestNames[i];
+}
+
+// Release resource i
+void
+test_finalizer_rel_string_t(char *i)
+{
+  int index = atoi(i);
+  if (index < 0 || index >= (int)gFinalizerTestSize) {
+    MOZ_CRASH("Assertion failed");
+  }
+  gFinalizerTestResources[index] --;
+}
+
+bool
+test_finalizer_string_resource_is_acquired(size_t i)
+{
+  return gFinalizerTestResources[i] == 1;
+}
+
+bool
+test_finalizer_cmp_string_t(char *a, char *b)
+{
+  return !strncmp(a, b, 10);
+}
+
+// Resource type: myRECT
+
+// Acquire resource i
+myRECT
+test_finalizer_acq_struct_t(int i)
+{
+  gFinalizerTestResources[i] = 1;
+  myRECT result = { i, i, i, i };
+  return result;
+}
+
+// Release resource i
+void
+test_finalizer_rel_struct_t(myRECT i)
+{
+  int index = i.top;
+  if (index < 0 || index >= (int)gFinalizerTestSize) {
+    MOZ_CRASH("Assertion failed");
+  }
+  gFinalizerTestResources[index] --;
+}
+
+bool
+test_finalizer_struct_resource_is_acquired(myRECT i)
+{
+  int index = i.top;
+  if (index < 0 || index >= (int)gFinalizerTestSize) {
+    MOZ_CRASH("Assertion failed");
+  }
+  return gFinalizerTestResources[index] == 1;
+}
+
+bool
+test_finalizer_cmp_struct_t(myRECT a, myRECT b)
+{
+  return a.top == b.top;
+}
+
+// Support for checking that we reject nullptr finalizer
+afun* test_finalizer_rel_null_function()
+{
+  return nullptr;
+}
+
+void
+test_finalizer_rel_size_t_set_errno(size_t i)
+{
+  if (-- gFinalizerTestResources[i] < 0) {
+    MOZ_CRASH("Assertion failed");
+  }
+  errno = 10;
+}
+
+void
+reset_errno()
+{
+  errno = 0;
+}
diff --git a/toolkit/components/ctypes/tests/jsctypes-test-finalizer.h b/toolkit/components/ctypes/tests/jsctypes-test-finalizer.h
new file mode 100644
index 000000000..f942e7f44
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test-finalizer.h
@@ -0,0 +1,57 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Types.h"
+
+#define EXPORT_CDECL(type)   MOZ_EXPORT type
+
+MOZ_BEGIN_EXTERN_C
+
+  EXPORT_CDECL(void) test_finalizer_start(size_t size);
+  EXPORT_CDECL(void) test_finalizer_stop();
+  EXPORT_CDECL(bool) test_finalizer_resource_is_acquired(size_t i);
+
+  EXPORT_CDECL(size_t) test_finalizer_acq_size_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_size_t(size_t i);
+  EXPORT_CDECL(size_t) test_finalizer_rel_size_t_return_size_t(size_t i);
+  EXPORT_CDECL(myRECT) test_finalizer_rel_size_t_return_struct_t(size_t i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_size_t(size_t a, size_t b);
+
+  EXPORT_CDECL(int32_t) test_finalizer_acq_int32_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_int32_t(int32_t i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_int32_t(int32_t a, int32_t b);
+
+  EXPORT_CDECL(int64_t) test_finalizer_acq_int64_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_int64_t(int64_t i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_int64_t(int64_t a, int64_t b);
+
+  EXPORT_CDECL(void*) test_finalizer_acq_ptr_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_ptr_t(void *i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_ptr_t(void *a, void *b);
+
+  EXPORT_CDECL(int32_t*) test_finalizer_acq_int32_ptr_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_int32_ptr_t(int32_t *i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_int32_ptr_t(int32_t *a, int32_t *b);
+
+  EXPORT_CDECL(char*) test_finalizer_acq_string_t(int i);
+  EXPORT_CDECL(void) test_finalizer_rel_string_t(char *i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_string_t(char *a, char *b);
+
+  EXPORT_CDECL(void*) test_finalizer_acq_null_t(size_t i);
+  EXPORT_CDECL(void) test_finalizer_rel_null_t(void *i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_null_t(void *a, void *b);
+  EXPORT_CDECL(bool) test_finalizer_null_resource_is_acquired(size_t i);
+
+  EXPORT_CDECL(myRECT) test_finalizer_acq_struct_t(int i);
+  EXPORT_CDECL(void) test_finalizer_rel_struct_t(myRECT i);
+  EXPORT_CDECL(bool) test_finalizer_cmp_struct_t(myRECT a, myRECT b);
+
+  typedef void (*afun)(size_t);
+  EXPORT_CDECL(afun*) test_finalizer_rel_null_function();
+
+  EXPORT_CDECL(void) test_finalizer_rel_size_t_set_errno(size_t i);
+  EXPORT_CDECL(void) reset_errno();
+
+MOZ_END_EXTERN_C
diff --git a/toolkit/components/ctypes/tests/jsctypes-test.cpp b/toolkit/components/ctypes/tests/jsctypes-test.cpp
new file mode 100644
index 000000000..d0e84a66c
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test.cpp
@@ -0,0 +1,394 @@
+/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "jsctypes-test.h"
+#include 
+#include 
+#include 
+#include "typedefs.h"
+
+template  struct ValueTraits {
+  static T literal() { return static_cast(109.25); }
+  static T sum(T a, T b) { return a + b; }
+  static T sum_many(
+    T a, T b, T c, T d, T e, T f, T g, T h, T i,
+    T j, T k, T l, T m, T n, T o, T p, T q, T r)
+  {
+    return a + b + c + d + e + f + g + h + i + j + k + l + m + n + o + p + q + r;
+  }
+};
+
+template <> struct ValueTraits {
+  typedef bool T;
+  static T literal() { return true; }
+  static T sum(T a, T b) { return a || b; }
+  static T sum_many(
+    T a, T b, T c, T d, T e, T f, T g, T h, T i,
+    T j, T k, T l, T m, T n, T o, T p, T q, T r)
+  {
+    return a || b || c || d || e || f || g || h || i ||
+           j || k || l || m || n || o || p || q || r;
+  }
+};
+
+void
+test_void_t_cdecl()
+{
+  // do nothing
+  return;
+}
+
+// The "AndUnderscore" bit here is an unfortunate hack: the first argument to
+// DEFINE_CDECL_FUNCTIONS and DEFINE_STDCALL_FUNCTIONS, in addition to being a
+// type, may also be a *macro* on NetBSD -- #define int8_t __int8_t and so on.
+// See .
+// And unfortunately, passing that macro as an argument to this macro causes it
+// to be expanded -- producing get___int8_t_cdecl() and so on.  Concatenating
+// int8_t with _ slightly muddies this code but inhibits expansion. See also
+// bug 1113379.
+#define FUNCTION_TESTS(nameAndUnderscore, type, ffiType, suffix)               \
+type ABI                                                                       \
+get_##nameAndUnderscore##suffix()                                              \
+{                                                                              \
+  return ValueTraits::literal();                                         \
+}                                                                              \
+                                                                               \
+type ABI                                                                       \
+set_##nameAndUnderscore##suffix(type x)                                        \
+{                                                                              \
+  return x;                                                                    \
+}                                                                              \
+                                                                               \
+type ABI                                                                       \
+sum_##nameAndUnderscore##suffix(type x, type y)                                \
+{                                                                              \
+  return ValueTraits::sum(x, y);                                         \
+}                                                                              \
+                                                                               \
+type ABI                                                                       \
+sum_alignb_##nameAndUnderscore##suffix(char a, type x, char b, type y, char c)\
+{                                                                              \
+  return ValueTraits::sum(x, y);                                         \
+}                                                                              \
+                                                                               \
+type ABI                                                                       \
+sum_alignf_##nameAndUnderscore##suffix(float a, type x, float b, type y, float c)\
+{                                                                              \
+  return ValueTraits::sum(x, y);                                         \
+}                                                                              \
+                                                                               \
+type ABI                                                                       \
+sum_many_##nameAndUnderscore##suffix(                                          \
+  type a, type b, type c, type d, type e, type f, type g, type h, type i,      \
+  type j, type k, type l, type m, type n, type o, type p, type q, type r)      \
+{                                                                              \
+  return ValueTraits::sum_many(a, b, c, d, e, f, g, h, i,                \
+                                     j, k, l, m, n, o, p, q, r);               \
+}
+
+#define ABI /* cdecl */
+#define DEFINE_CDECL_FUNCTIONS(x, y, z) FUNCTION_TESTS(x##_, y, z, cdecl)
+CTYPES_FOR_EACH_TYPE(DEFINE_CDECL_FUNCTIONS)
+#undef DEFINE_CDECL_FUNCTIONS
+#undef ABI
+
+#if defined(_WIN32)
+
+void NS_STDCALL
+test_void_t_stdcall()
+{
+  // do nothing
+  return;
+}
+
+#define ABI NS_STDCALL
+#define DEFINE_STDCALL_FUNCTIONS(x, y, z) FUNCTION_TESTS(x##_, y, z, stdcall)
+CTYPES_FOR_EACH_TYPE(DEFINE_STDCALL_FUNCTIONS)
+#undef DEFINE_STDCALL_FUNCTIONS
+#undef ABI
+
+#endif /* defined(_WIN32) */
+
+#define DEFINE_CDECL_TYPE_STATS(name, type, ffiType)                           \
+struct align_##name {                                                          \
+  char x;                                                                      \
+  type y;                                                                      \
+};                                                                             \
+struct nested_##name {                                                         \
+  char a;                                                                      \
+  align_##name b;                                                              \
+  char c;                                                                      \
+};                                                                             \
+                                                                               \
+void                                                                           \
+get_##name##_stats(size_t* align, size_t* size, size_t* nalign, size_t* nsize, \
+                   size_t offsets[])                                           \
+{                                                                              \
+  *align = offsetof(align_##name, y);                                          \
+  *size = sizeof(align_##name);                                                \
+  *nalign = offsetof(nested_##name, b);                                        \
+  *nsize = sizeof(nested_##name);                                              \
+  offsets[0] = offsetof(align_##name, y);                                      \
+  offsets[1] = offsetof(nested_##name, b);                                     \
+  offsets[2] = offsetof(nested_##name, c);                                     \
+}
+CTYPES_FOR_EACH_TYPE(DEFINE_CDECL_TYPE_STATS)
+#undef DEFINE_CDECL_TYPE_STATS
+
+template 
+int32_t StrLen(const T* string)
+{
+  const T *end;
+  for (end = string; *end; ++end);
+  return end - string;
+}
+
+int32_t
+test_ansi_len(const char* string)
+{
+  return StrLen(string);
+}
+
+int32_t
+test_wide_len(const char16_t* string)
+{
+  return StrLen(string);
+}
+
+const char *
+test_ansi_ret()
+{
+  return "success";
+}
+
+const char16_t *
+test_wide_ret()
+{
+  static const char16_t kSuccess[] = {'s', 'u', 'c', 'c', 'e', 's', 's', '\0'};
+  return kSuccess;
+}
+
+char *
+test_ansi_echo(const char* string)
+{
+  return (char*)string;
+}
+
+int32_t
+test_pt_in_rect(myRECT rc, myPOINT pt)
+{
+  if (pt.x < rc.left || pt.x > rc.right)
+    return 0;
+  if (pt.y < rc.bottom || pt.y > rc.top)
+    return 0;
+  return 1;
+}
+
+void
+test_init_pt(myPOINT* pt, int32_t x, int32_t y)
+{
+  pt->x = x;
+  pt->y = y;
+}
+
+int32_t
+test_nested_struct(NESTED n)
+{
+  return int32_t(n.n1 + n.n2 + n.inner.i1 + n.inner.i2 + n.inner.i3 + n.n3 + n.n4);
+}
+
+myPOINT
+test_struct_return(myRECT r)
+{
+  myPOINT p;
+  p.x = r.left; p.y = r.top;
+  return p;
+}
+
+myRECT
+test_large_struct_return(myRECT a, myRECT b)
+{
+  myRECT r;
+  r.left = a.left; r.right = a.right;
+  r.top = b.top; r.bottom = b.bottom;
+  return r;
+}
+
+ONE_BYTE
+test_1_byte_struct_return(myRECT r)
+{
+  ONE_BYTE s;
+  s.a = r.top;
+  return s;
+}
+
+TWO_BYTE
+test_2_byte_struct_return(myRECT r)
+{
+  TWO_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  return s;
+}
+
+THREE_BYTE
+test_3_byte_struct_return(myRECT r)
+{
+  THREE_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  s.c = r.bottom;
+  return s;
+}
+
+FOUR_BYTE
+test_4_byte_struct_return(myRECT r)
+{
+  FOUR_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  s.c = r.bottom;
+  s.d = r.right;
+  return s;
+}
+
+FIVE_BYTE
+test_5_byte_struct_return(myRECT r)
+{
+  FIVE_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  s.c = r.bottom;
+  s.d = r.right;
+  s.e = r.top;
+  return s;
+}
+
+SIX_BYTE
+test_6_byte_struct_return(myRECT r)
+{
+  SIX_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  s.c = r.bottom;
+  s.d = r.right;
+  s.e = r.top;
+  s.f = r.left;
+  return s;
+}
+
+SEVEN_BYTE
+test_7_byte_struct_return(myRECT r)
+{
+  SEVEN_BYTE s;
+  s.a = r.top;
+  s.b = r.left;
+  s.c = r.bottom;
+  s.d = r.right;
+  s.e = r.top;
+  s.f = r.left;
+  s.g = r.bottom;
+  return s;
+}
+
+void *
+test_fnptr()
+{
+  return (void*)(uintptr_t)test_ansi_len;
+}
+
+int32_t
+test_closure_cdecl(int8_t i, test_func_ptr f)
+{
+  return f(i);
+}
+
+#if defined(_WIN32)
+int32_t
+test_closure_stdcall(int8_t i, test_func_ptr_stdcall f)
+{
+  return f(i);
+}
+#endif /* defined(_WIN32) */
+
+template  struct PromotedTraits {
+  typedef T type;
+};
+#define DECL_PROMOTED(FROM, TO)                 \
+  template <> struct PromotedTraits {     \
+    typedef TO type;                            \
+  }
+DECL_PROMOTED(bool, int);
+DECL_PROMOTED(char, int);
+DECL_PROMOTED(short, int);
+
+int32_t
+test_sum_va_cdecl(uint8_t n, ...)
+{
+  va_list list;
+  int32_t sum = 0;
+  va_start(list, n);
+  for (uint8_t i = 0; i < n; ++i)
+    sum += va_arg(list, PromotedTraits::type);
+  va_end(list);
+  return sum;
+}
+
+uint8_t
+test_count_true_va_cdecl(uint8_t n, ...)
+{
+  va_list list;
+  uint8_t count = 0;
+  va_start(list, n);
+  for (uint8_t i = 0; i < n; ++i)
+    if (va_arg(list, PromotedTraits::type))
+      count += 1;
+  va_end(list);
+  return count;
+}
+
+void
+test_add_char_short_int_va_cdecl(uint32_t* result, ...)
+{
+  va_list list;
+  va_start(list, result);
+  *result += va_arg(list, PromotedTraits::type);
+  *result += va_arg(list, PromotedTraits::type);
+  *result += va_arg(list, PromotedTraits::type);
+  va_end(list);
+}
+
+int32_t*
+test_vector_add_va_cdecl(uint8_t num_vecs,
+                         uint8_t vec_len,
+                         int32_t* result, ...)
+{
+  va_list list;
+  va_start(list, result);
+  uint8_t i;
+  for (i = 0; i < vec_len; ++i)
+    result[i] = 0;
+  for (i = 0; i < num_vecs; ++i) {
+    int32_t* vec = va_arg(list, int32_t*);
+    for (uint8_t j = 0; j < vec_len; ++j)
+      result[j] += vec[j];
+  }
+  va_end(list);
+  return result;
+}
+
+myRECT data_rect = { -1, -2, 3, 4 };
+
+TestClass::TestClass(int32_t a)
+{
+  mInt =a;
+}
+
+int32_t
+TestClass::Add(int32_t aOther)
+{
+  mInt += aOther;
+  return mInt;
+}
diff --git a/toolkit/components/ctypes/tests/jsctypes-test.h b/toolkit/components/ctypes/tests/jsctypes-test.h
new file mode 100644
index 000000000..14eb8c915
--- /dev/null
+++ b/toolkit/components/ctypes/tests/jsctypes-test.h
@@ -0,0 +1,197 @@
+/* -*-  Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2; -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jsctypes_test_h
+#define jsctypes_test_h
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Types.h"
+#include "jspubtd.h"
+#include "typedefs.h"
+
+#define EXPORT_CDECL(type)   MOZ_EXPORT type
+#if defined(_WIN32)
+#if defined(_WIN64)
+#define NS_STDCALL
+#else
+#define NS_STDCALL __stdcall
+#endif
+#define EXPORT_STDCALL(type) MOZ_EXPORT type NS_STDCALL
+#endif
+
+MOZ_BEGIN_EXTERN_C
+
+  EXPORT_CDECL(void) test_void_t_cdecl();
+
+  EXPORT_CDECL(void*) get_voidptr_t_cdecl();
+  EXPORT_CDECL(void*) set_voidptr_t_cdecl(void*);
+
+#define DECLARE_CDECL_FUNCTIONS(name, type, ffiType)                           \
+  EXPORT_CDECL(type) get_##name##_cdecl();                                     \
+  EXPORT_CDECL(type) set_##name##_cdecl(type);                                 \
+  EXPORT_CDECL(type) sum_##name##_cdecl(type, type);                           \
+  EXPORT_CDECL(type) sum_alignb_##name##_cdecl(char, type, char, type, char);  \
+  EXPORT_CDECL(type) sum_alignf_##name##_cdecl(                                \
+    float, type, float, type, float);                                          \
+  EXPORT_CDECL(type) sum_many_##name##_cdecl(                                  \
+    type, type, type, type, type, type, type, type, type,                      \
+    type, type, type, type, type, type, type, type, type);                     \
+                                                                               \
+  EXPORT_CDECL(void) get_##name##_stats(size_t* align, size_t* size,           \
+                                        size_t* nalign, size_t* nsize,         \
+                                        size_t offsets[]);
+  CTYPES_FOR_EACH_TYPE(DECLARE_CDECL_FUNCTIONS)
+#undef DECLARE_CDECL_FUNCTIONS
+
+#if defined(_WIN32)
+  EXPORT_STDCALL(void) test_void_t_stdcall();
+
+  EXPORT_STDCALL(void*) get_voidptr_t_stdcall();
+  EXPORT_STDCALL(void*) set_voidptr_t_stdcall(void*);
+
+#define DECLARE_STDCALL_FUNCTIONS(name, type, ffiType)                         \
+  EXPORT_STDCALL(type) get_##name##_stdcall();                                 \
+  EXPORT_STDCALL(type) set_##name##_stdcall(type);                             \
+  EXPORT_STDCALL(type) sum_##name##_stdcall(type, type);                       \
+  EXPORT_STDCALL(type) sum_alignb_##name##_stdcall(                            \
+    char, type, char, type, char);                                             \
+  EXPORT_STDCALL(type) sum_alignf_##name##_stdcall(                            \
+    float, type, float, type, float);                                          \
+  EXPORT_STDCALL(type) sum_many_##name##_stdcall(                              \
+    type, type, type, type, type, type, type, type, type,                      \
+    type, type, type, type, type, type, type, type, type);
+  CTYPES_FOR_EACH_TYPE(DECLARE_STDCALL_FUNCTIONS)
+#undef DECLARE_STDCALL_FUNCTIONS
+
+#endif /* defined(_WIN32) */
+
+  MOZ_EXPORT int32_t test_ansi_len(const char*);
+  MOZ_EXPORT int32_t test_wide_len(const char16_t*);
+  MOZ_EXPORT const char* test_ansi_ret();
+  MOZ_EXPORT const char16_t* test_wide_ret();
+  MOZ_EXPORT char* test_ansi_echo(const char*);
+
+  struct ONE_BYTE {
+    char a;
+  };
+
+  struct TWO_BYTE {
+    char a;
+    char b;
+  };
+
+  struct THREE_BYTE {
+    char a;
+    char b;
+    char c;
+  };
+
+  struct FOUR_BYTE {
+    char a;
+    char b;
+    char c;
+    char d;
+  };
+
+  struct FIVE_BYTE {
+    char a;
+    char b;
+    char c;
+    char d;
+    char e;
+  };
+
+  struct SIX_BYTE {
+    char a;
+    char b;
+    char c;
+    char d;
+    char e;
+    char f;
+  };
+
+  struct SEVEN_BYTE {
+    char a;
+    char b;
+    char c;
+    char d;
+    char e;
+    char f;
+    char g;
+  };
+
+  struct myPOINT {
+    int32_t x;
+    int32_t y;
+  };
+
+  struct myRECT {
+    int32_t top;
+    int32_t left;
+    int32_t bottom;
+    int32_t right;
+  };
+
+  struct INNER {
+    uint8_t i1;
+    int64_t i2;
+    uint8_t i3;
+  };
+
+  struct NESTED {
+    int32_t n1;
+    int16_t n2;
+    INNER   inner;
+    int64_t n3;
+    int32_t n4;
+  };
+
+  MOZ_EXPORT int32_t test_pt_in_rect(myRECT, myPOINT);
+  MOZ_EXPORT void test_init_pt(myPOINT* pt, int32_t x, int32_t y);
+
+  MOZ_EXPORT int32_t test_nested_struct(NESTED);
+  MOZ_EXPORT myPOINT test_struct_return(myRECT);
+  MOZ_EXPORT myRECT test_large_struct_return(myRECT, myRECT);
+  MOZ_EXPORT ONE_BYTE test_1_byte_struct_return(myRECT);
+  MOZ_EXPORT TWO_BYTE test_2_byte_struct_return(myRECT);
+  MOZ_EXPORT THREE_BYTE test_3_byte_struct_return(myRECT);
+  MOZ_EXPORT FOUR_BYTE test_4_byte_struct_return(myRECT);
+  MOZ_EXPORT FIVE_BYTE test_5_byte_struct_return(myRECT);
+  MOZ_EXPORT SIX_BYTE test_6_byte_struct_return(myRECT);
+  MOZ_EXPORT SEVEN_BYTE test_7_byte_struct_return(myRECT);
+
+  MOZ_EXPORT void * test_fnptr();
+
+  typedef int32_t (* test_func_ptr)(int8_t);
+  MOZ_EXPORT int32_t test_closure_cdecl(int8_t, test_func_ptr);
+#if defined(_WIN32)
+  typedef int32_t (NS_STDCALL * test_func_ptr_stdcall)(int8_t);
+  MOZ_EXPORT int32_t test_closure_stdcall(int8_t, test_func_ptr_stdcall);
+#endif /* defined(_WIN32) */
+
+  MOZ_EXPORT int32_t test_callme(int8_t);
+  MOZ_EXPORT void* test_getfn();
+
+  EXPORT_CDECL(int32_t) test_sum_va_cdecl(uint8_t n, ...);
+  EXPORT_CDECL(uint8_t) test_count_true_va_cdecl(uint8_t n, ...);
+  EXPORT_CDECL(void) test_add_char_short_int_va_cdecl(uint32_t* result, ...);
+  EXPORT_CDECL(int32_t*) test_vector_add_va_cdecl(uint8_t num_vecs,
+                                                  uint8_t vec_len,
+                                                  int32_t* result, ...);
+
+  MOZ_EXPORT extern myRECT data_rect;
+
+MOZ_END_EXTERN_C
+
+class MOZ_EXPORT TestClass final {
+public:
+  explicit TestClass(int32_t);
+  int32_t Add(int32_t);
+
+private:
+  int32_t mInt;
+};
+
+#endif
diff --git a/toolkit/components/ctypes/tests/moz.build b/toolkit/components/ctypes/tests/moz.build
new file mode 100644
index 000000000..22cbe4edc
--- /dev/null
+++ b/toolkit/components/ctypes/tests/moz.build
@@ -0,0 +1,30 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIST_INSTALL = False
+
+XPCSHELL_TESTS_MANIFESTS += ['unit/xpcshell.ini']
+MOCHITEST_CHROME_MANIFESTS += ['chrome/chrome.ini']
+
+UNIFIED_SOURCES += [
+    'jsctypes-test-errno.cpp',
+    'jsctypes-test-finalizer.cpp',
+    'jsctypes-test.cpp',
+]
+
+SharedLibrary('jsctypes-test')
+
+LOCAL_INCLUDES += [
+    '/js/src/ctypes',
+]
+
+# Don't use STL wrappers here (i.e. wrapped ); they require mozalloc.
+DISABLE_STL_WRAPPING = True
+
+if CONFIG['COMPILE_ENVIRONMENT']:
+    shared_library = '!%sjsctypes-test%s' % (CONFIG['DLL_PREFIX'], CONFIG['DLL_SUFFIX'])
+    TEST_HARNESS_FILES.xpcshell.toolkit.components.ctypes.tests.unit += [shared_library]
+    TEST_HARNESS_FILES.testing.mochitest.chrome.toolkit.components.ctypes.tests.chrome += [shared_library]
diff --git a/toolkit/components/ctypes/tests/unit/.eslintrc.js b/toolkit/components/ctypes/tests/unit/.eslintrc.js
new file mode 100644
index 000000000..d35787cd2
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../../testing/xpcshell/xpcshell.eslintrc.js"
+  ]
+};
diff --git a/toolkit/components/ctypes/tests/unit/head.js b/toolkit/components/ctypes/tests/unit/head.js
new file mode 100644
index 000000000..e95b949b6
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/head.js
@@ -0,0 +1,128 @@
+try {
+  // We might be running without privileges, in which case it's up to the
+  // harness to give us the 'ctypes' object.
+  Components.utils.import("resource://gre/modules/ctypes.jsm");
+} catch (e) {
+}
+
+function open_ctypes_test_lib()
+{
+  return ctypes.open(do_get_file(ctypes.libraryName("jsctypes-test")).path);
+}
+
+/**
+ * A weak set of CDataFinalizer values that need to be cleaned up before
+ * proceeding to the next test.
+ */
+function ResourceCleaner() {
+  this._map = new WeakMap();
+}
+ResourceCleaner.prototype = {
+  add: function ResourceCleaner_add(v) {
+    this._map.set(v);
+    return v;
+  },
+  cleanup: function ResourceCleaner_cleanup() {
+    let keys = ThreadSafeChromeUtils.nondeterministicGetWeakMapKeys(this._map);
+    keys.forEach((function cleaner(k) {
+      try {
+        k.dispose();
+      } catch (x) {
+        // This can fail if |forget|/|dispose| has been called manually
+        // during the test. This is normal.
+      }
+      this._map.delete(k);
+    }).bind(this));
+  }
+};
+
+/**
+ * Simple wrapper for tests that require cleanup.
+ */
+function ResourceTester(start, stop) {
+  this._start = start;
+  this._stop  = stop;
+}
+ResourceTester.prototype = {
+  launch: function(size, test, args) {
+    trigger_gc();
+    let cleaner = new ResourceCleaner();
+    this._start(size);
+    try {
+      test(size, args, cleaner);
+    } catch (x) {
+      cleaner.cleanup();
+      this._stop();
+      throw x;
+    }
+    trigger_gc();
+    cleaner.cleanup();
+    this._stop();
+  }
+};
+
+function structural_check_eq(a, b) {
+  // 1. If objects can be "toSource()-ed", use this.
+
+  let result;
+  let finished = false;
+  let asource, bsource;
+  try {
+    asource = a.toSource();
+    bsource = b.toSource();
+    finished = true;
+  } catch (x) {
+  }
+  if (finished) {
+    do_check_eq(asource, bsource);
+    return;
+  }
+
+  // 2. Otherwise, perform slower comparison
+
+  try {
+    structural_check_eq_aux(a, b);
+    result = true;
+  } catch (x) {
+    dump(x);
+    result = false;
+  }
+  do_check_true(result);
+}
+function structural_check_eq_aux(a, b) {
+  let ak;
+  try {
+    ak = Object.keys(a);
+  } catch (x) {
+    if (a != b) {
+      throw new Error("Distinct values "+a, b);
+    }
+    return;
+  }
+  ak.forEach(
+    function(k) {
+      let av = a[k];
+      let bv = b[k];
+      structural_check_eq_aux(av, bv);
+    }
+  );
+}
+
+function trigger_gc() {
+  dump("Triggering garbage-collection");
+  Components.utils.forceGC();
+}
+
+function must_throw(f) {
+  let has_thrown = false;
+  try {
+    f();
+  } catch (x) {
+    has_thrown = true;
+  }
+  do_check_true(has_thrown);
+}
+
+function get_os() {
+  return Components.classes["@mozilla.org/xre/app-info;1"].getService(Components.interfaces.nsIXULRuntime).OS;
+}
diff --git a/toolkit/components/ctypes/tests/unit/test_errno.js b/toolkit/components/ctypes/tests/unit/test_errno.js
new file mode 100644
index 000000000..6bf6b4b05
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/test_errno.js
@@ -0,0 +1,69 @@
+Components.utils.import("resource://gre/modules/ctypes.jsm");
+
+// Scope used to relaunch the tests with |ctypes| opened in a limited scope.
+var scope = {};
+var ctypes = ctypes;
+
+function run_test()
+{
+  // Launch the test with regular loading of ctypes.jsm
+  main_test();
+
+  // Relaunch the test with exotic loading of ctypes.jsm
+  Components.utils.unload("resource://gre/modules/ctypes.jsm");
+  Components.utils.import("resource://gre/modules/ctypes.jsm", scope);
+  ctypes = scope.ctypes;
+  main_test();
+}
+
+function main_test()
+{
+  "use strict";
+  let library = open_ctypes_test_lib();
+  let set_errno = library.declare("set_errno", ctypes.default_abi,
+                                   ctypes.void_t,
+                                   ctypes.int);
+  let get_errno = library.declare("get_errno", ctypes.default_abi,
+                                   ctypes.int);
+
+  for (let i = 50; i >= 0; --i) {
+    set_errno(i);
+    let status = ctypes.errno;
+    do_check_eq(status, i);
+
+    status = get_errno();
+    do_check_eq(status, 0);
+
+    status = ctypes.errno;
+    do_check_eq(status, 0);
+  }
+
+  let set_last_error, get_last_error;
+  try { // The following test is Windows-specific
+    set_last_error = library.declare("set_last_error", ctypes.default_abi,
+                                     ctypes.void_t,
+                                     ctypes.int);
+    get_last_error = library.declare("get_last_error", ctypes.default_abi,
+                                     ctypes.int);
+
+  } catch (x) {
+    do_check_eq(ctypes.winLastError, undefined);
+  }
+
+  if (set_last_error) {
+    do_check_neq(ctypes.winLastError, undefined);
+    for (let i = 0; i < 50; ++i) {
+      set_last_error(i);
+      let status = ctypes.winLastError;
+      do_check_eq(status, i);
+
+      status = get_last_error();
+      do_check_eq(status, 0);
+
+      status = ctypes.winLastError;
+      do_check_eq(status, 0);
+    }
+  }
+
+  library.close();
+}
diff --git a/toolkit/components/ctypes/tests/unit/test_finalizer.js b/toolkit/components/ctypes/tests/unit/test_finalizer.js
new file mode 100644
index 000000000..adfb4c4b4
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/test_finalizer.js
@@ -0,0 +1,452 @@
+var TEST_SIZE = 100;
+
+function run_test()
+{
+  let library = open_ctypes_test_lib();
+
+  let start = library.declare("test_finalizer_start", ctypes.default_abi,
+                          ctypes.void_t,
+                          ctypes.size_t);
+  let stop = library.declare("test_finalizer_stop", ctypes.default_abi,
+                         ctypes.void_t);
+  let status = library.declare("test_finalizer_resource_is_acquired",
+                           ctypes.default_abi,
+                           ctypes.bool,
+                           ctypes.size_t);
+  let released = function released(value, witness) {
+    return witness == undefined;
+  };
+
+  let samples = [];
+  samples.push(
+    {
+      name: "size_t",
+      acquire: library.declare("test_finalizer_acq_size_t",
+                           ctypes.default_abi,
+                           ctypes.size_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_size_t",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.size_t),
+      compare: library.declare("test_finalizer_cmp_size_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.size_t,
+                               ctypes.size_t),
+      status: status,
+      released: released
+  });
+  samples.push(
+    {
+      name: "size_t",
+      acquire: library.declare("test_finalizer_acq_size_t",
+                           ctypes.default_abi,
+                           ctypes.size_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_size_t_set_errno",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.size_t),
+      compare: library.declare("test_finalizer_cmp_size_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.size_t,
+                               ctypes.size_t),
+      status: status,
+      released: released
+  });
+  samples.push(
+    {
+      name: "int32_t",
+      acquire: library.declare("test_finalizer_acq_int32_t",
+                           ctypes.default_abi,
+                           ctypes.int32_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_int32_t",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.int32_t),
+      compare: library.declare("test_finalizer_cmp_int32_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.int32_t,
+                               ctypes.int32_t),
+      status: status,
+      released: released
+    }
+  );
+  samples.push(
+    {
+      name: "int64_t",
+      acquire: library.declare("test_finalizer_acq_int64_t",
+                           ctypes.default_abi,
+                           ctypes.int64_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_int64_t",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.int64_t),
+      compare: library.declare("test_finalizer_cmp_int64_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.int64_t,
+                               ctypes.int64_t),
+      status: status,
+      released: released
+    }
+  );
+  samples.push(
+    {
+      name: "ptr",
+      acquire: library.declare("test_finalizer_acq_ptr_t",
+                           ctypes.default_abi,
+                           ctypes.PointerType(ctypes.void_t),
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_ptr_t",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.PointerType(ctypes.void_t)),
+      compare: library.declare("test_finalizer_cmp_ptr_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.void_t.ptr,
+                               ctypes.void_t.ptr),
+      status: status,
+      released: released
+    }
+  );
+  samples.push(
+    {
+      name: "string",
+      acquire: library.declare("test_finalizer_acq_string_t",
+                               ctypes.default_abi,
+                               ctypes.char.ptr,
+                               ctypes.int),
+      release: library.declare("test_finalizer_rel_string_t",
+                               ctypes.default_abi,
+                               ctypes.void_t,
+                               ctypes.char.ptr),
+      compare: library.declare("test_finalizer_cmp_string_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.char.ptr,
+                               ctypes.char.ptr),
+      status: status,
+      released: released
+    }
+  );
+  const rect_t = new ctypes.StructType("myRECT",
+                                       [{ top   : ctypes.int32_t },
+                                        { left  : ctypes.int32_t },
+                                        { bottom: ctypes.int32_t },
+                                        { right : ctypes.int32_t }]);
+  samples.push(
+    {
+      name: "struct",
+      acquire: library.declare("test_finalizer_acq_struct_t",
+                               ctypes.default_abi,
+                               rect_t,
+                               ctypes.int),
+      release: library.declare("test_finalizer_rel_struct_t",
+                               ctypes.default_abi,
+                               ctypes.void_t,
+                               rect_t),
+      compare: library.declare("test_finalizer_cmp_struct_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               rect_t,
+                               rect_t),
+      status: status,
+      released: released
+    }
+  );
+  samples.push(
+    {
+      name: "size_t, release returns size_t",
+      acquire: library.declare("test_finalizer_acq_size_t",
+                           ctypes.default_abi,
+                           ctypes.size_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_size_t_return_size_t",
+                           ctypes.default_abi,
+                           ctypes.size_t,
+                           ctypes.size_t),
+      compare: library.declare("test_finalizer_cmp_size_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.size_t,
+                               ctypes.size_t),
+      status: status,
+      released: function released_eq(i, witness) {
+        return i == witness;
+      }
+    }
+  );
+  samples.push(
+    {
+      name: "size_t, release returns myRECT",
+      acquire: library.declare("test_finalizer_acq_size_t",
+                           ctypes.default_abi,
+                           ctypes.size_t,
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_size_t_return_struct_t",
+                               ctypes.default_abi,
+                               rect_t,
+                               ctypes.size_t),
+      compare: library.declare("test_finalizer_cmp_size_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.size_t,
+                               ctypes.size_t),
+      status: status,
+      released: function released_rect_eq(i, witness) {
+        return witness.top == i
+          && witness.bottom == i
+          && witness.left == i
+          && witness.right == i;
+      }
+    }
+  );
+  samples.push(
+    {
+      name: "using null",
+      acquire: library.declare("test_finalizer_acq_null_t",
+                           ctypes.default_abi,
+                           ctypes.PointerType(ctypes.void_t),
+                           ctypes.size_t),
+      release: library.declare("test_finalizer_rel_null_t",
+                           ctypes.default_abi,
+                           ctypes.void_t,
+                           ctypes.PointerType(ctypes.void_t)),
+      status: library.declare("test_finalizer_null_resource_is_acquired",
+                             ctypes.default_abi,
+                             ctypes.bool,
+                             ctypes.size_t),
+      compare: library.declare("test_finalizer_cmp_null_t",
+                               ctypes.default_abi,
+                               ctypes.bool,
+                               ctypes.void_t.ptr,
+                               ctypes.void_t.ptr),
+      released: released
+    }
+  );
+
+  let tester = new ResourceTester(start, stop);
+  samples.forEach(
+    function run_sample(sample) {
+      dump("Executing finalization test for data " + sample.name + "\n");
+      tester.launch(TEST_SIZE, test_executing_finalizers, sample);
+      tester.launch(TEST_SIZE, test_do_not_execute_finalizers_on_referenced_stuff, sample);
+      tester.launch(TEST_SIZE, test_executing_dispose, sample);
+      tester.launch(TEST_SIZE, test_executing_forget, sample);
+      tester.launch(TEST_SIZE, test_result_dispose, sample);
+      dump("Successfully completed finalization test for data " + sample.name + "\n");
+    }
+  );
+
+  /*
+   * Following test deactivated: Cycle collection never takes place
+   * (see bug 727371)
+  tester.launch(TEST_SIZE, test_cycles, samples[0]);
+   */
+  dump("Successfully completed all finalization tests\n");
+  library.close();
+}
+
+// If only I could have Promises to test this :)
+// There is only so much we can do at this stage,
+// if we want to avoid tests overlapping.
+function test_cycles(size, tc) {
+  // Now, restart this with unreferenced cycles
+  for (i = 0; i < size/2; ++i) {
+    let a = {
+      a: ctypes.CDataFinalizer(tc.acquire(i*2), tc.release),
+      b: {
+        b: ctypes.CDataFinalizer(tc.acquire(i*2+1), tc.release)
+      }
+    };
+    a.b.a = a;
+  }
+  do_test_pending();
+
+  Components.utils.schedulePreciseGC(
+    function after_gc() {
+      // Check that _something_ has been finalized
+      do_check_true(count_finalized(size, tc) > 0);
+      do_test_finished();
+    }
+  );
+
+  do_timeout(10000, do_throw);
+}
+
+
+function count_finalized(size, tc) {
+  let finalizedItems = 0;
+  for (let i = 0; i < size; ++i) {
+    if (!tc.status(i)) {
+      ++finalizedItems;
+    }
+  }
+  return finalizedItems;
+}
+
+/**
+ * Test:
+ * - that (some) finalizers are executed;
+ * - that no finalizer is executed twice (this is done on the C side).
+ */
+function test_executing_finalizers(size, tc, cleanup)
+{
+  dump("test_executing_finalizers " + tc.name + "\n");
+  // Allocate |size| items without references
+  for (let i = 0; i < size; ++i) {
+    cleanup.add(ctypes.CDataFinalizer(tc.acquire(i), tc.release));
+  }
+  trigger_gc(); // This should trigger some finalizations, hopefully all
+
+  // Check that _something_ has been finalized
+  do_check_true(count_finalized(size, tc) > 0);
+}
+
+/**
+ * Check that
+ * - |dispose| returns the proper result
+ */
+function test_result_dispose(size, tc, cleanup) {
+  dump("test_result_dispose " + tc.name + "\n");
+  let ref = [];
+  // Allocate |size| items with references
+  for (let i = 0; i < size; ++i) {
+    let value = ctypes.CDataFinalizer(tc.acquire(i), tc.release);
+    cleanup.add(value);
+    ref.push(value);
+  }
+  do_check_eq(count_finalized(size, tc), 0);
+
+  for (i = 0; i < size; ++i) {
+    let witness = ref[i].dispose();
+    ref[i] = null;
+    if (!tc.released(i, witness)) {
+      do_print("test_result_dispose failure at index "+i);
+      do_check_true(false);
+    }
+  }
+
+  do_check_eq(count_finalized(size, tc), size);
+}
+
+
+/**
+ * Check that
+ * - |dispose| is executed properly
+ * - finalizers are not executed after |dispose|
+ */
+function test_executing_dispose(size, tc, cleanup)
+{
+  dump("test_executing_dispose " + tc.name + "\n");
+  let ref = [];
+  // Allocate |size| items with references
+  for (let i = 0; i < size; ++i) {
+    let value = ctypes.CDataFinalizer(tc.acquire(i), tc.release);
+    cleanup.add(value);
+    ref.push(value);
+  }
+  do_check_eq(count_finalized(size, tc), 0);
+
+  // Dispose of everything and make sure that everything has been cleaned up
+  ref.forEach(
+    function dispose(v) {
+      v.dispose();
+    }
+  );
+  do_check_eq(count_finalized(size, tc), size);
+
+  // Remove references
+  ref = [];
+
+  // Re-acquire data and make sure that everything has been reinialized
+  for (i = 0; i < size; ++i) {
+    tc.acquire(i);
+  }
+
+  do_check_eq(count_finalized(size, tc), 0);
+
+
+  // Attempt to trigger finalizations, ensure that they do not take place
+  trigger_gc();
+
+  do_check_eq(count_finalized(size, tc), 0);
+}
+
+
+/**
+ * Check that
+ * - |forget| does not dispose
+ * - |forget| has the right content
+ * - finalizers are not executed after |forget|
+ */
+function test_executing_forget(size, tc, cleanup)
+{
+  dump("test_executing_forget " + tc.name + "\n");
+  let ref = [];
+  // Allocate |size| items with references
+  for (let i = 0; i < size; ++i) {
+    let original = tc.acquire(i);
+    let finalizer = ctypes.CDataFinalizer(original, tc.release);
+    ref.push(
+      {
+        original: original,
+        finalizer: finalizer
+      }
+    );
+    cleanup.add(finalizer);
+    do_check_true(tc.compare(original, finalizer));
+  }
+  do_check_eq(count_finalized(size, tc), 0);
+
+  // Forget everything, making sure that we recover the original info
+  ref.forEach(
+    function compare_original_to_recovered(v) {
+      let original  = v.original;
+      let recovered = v.finalizer.forget();
+      // Note: Cannot use do_check_eq on Uint64 et al.
+      do_check_true(tc.compare(original, recovered));
+      do_check_eq(original.constructor, recovered.constructor);
+    }
+  );
+
+  // Also make sure that we have not performed any clean up
+  do_check_eq(count_finalized(size, tc), 0);
+
+  // Remove references
+  ref = [];
+
+  // Attempt to trigger finalizations, ensure that they have no effect
+  trigger_gc();
+
+  do_check_eq(count_finalized(size, tc), 0);
+}
+
+
+/**
+ * Check that finalizers are not executed
+ */
+function test_do_not_execute_finalizers_on_referenced_stuff(size, tc, cleanup)
+{
+  dump("test_do_not_execute_finalizers_on_referenced_stuff " + tc.name + "\n");
+
+  let ref = [];
+  // Allocate |size| items without references
+  for (let i = 0; i < size; ++i) {
+    let value = ctypes.CDataFinalizer(tc.acquire(i), tc.release);
+    cleanup.add(value);
+    ref.push(value);
+  }
+  trigger_gc(); // This might trigger some finalizations, but it should not
+
+  // Check that _nothing_ has been finalized
+  do_check_eq(count_finalized(size, tc), 0);
+}
+
diff --git a/toolkit/components/ctypes/tests/unit/test_finalizer_shouldaccept.js b/toolkit/components/ctypes/tests/unit/test_finalizer_shouldaccept.js
new file mode 100644
index 000000000..f683008e4
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/test_finalizer_shouldaccept.js
@@ -0,0 +1,174 @@
+try {
+  // We might be running without privileges, in which case it's up to the
+  // harness to give us the 'ctypes' object.
+  Components.utils.import("resource://gre/modules/ctypes.jsm");
+} catch (e) {
+}
+
+var acquire, dispose, reset_errno, dispose_errno,
+  acquire_ptr, dispose_ptr,
+  acquire_void_ptr, dispose_void_ptr,
+  acquire_string, dispose_string;
+
+function run_test()
+{
+  let library = open_ctypes_test_lib();
+
+  let start = library.declare("test_finalizer_start", ctypes.default_abi,
+                          ctypes.void_t,
+                          ctypes.size_t);
+  let stop = library.declare("test_finalizer_stop", ctypes.default_abi,
+                             ctypes.void_t);
+  let tester = new ResourceTester(start, stop);
+  acquire = library.declare("test_finalizer_acq_size_t",
+                            ctypes.default_abi,
+                            ctypes.size_t,
+                            ctypes.size_t);
+  dispose = library.declare("test_finalizer_rel_size_t",
+                            ctypes.default_abi,
+                            ctypes.void_t,
+                            ctypes.size_t);
+  reset_errno = library.declare("reset_errno",
+                                ctypes.default_abi,
+                                ctypes.void_t);
+  dispose_errno = library.declare("test_finalizer_rel_size_t_set_errno",
+                                  ctypes.default_abi,
+                                  ctypes.void_t,
+                                  ctypes.size_t);
+  acquire_ptr = library.declare("test_finalizer_acq_int32_ptr_t",
+                                ctypes.default_abi,
+                                ctypes.int32_t.ptr,
+                                ctypes.size_t);
+  dispose_ptr = library.declare("test_finalizer_rel_int32_ptr_t",
+                                ctypes.default_abi,
+                                ctypes.void_t,
+                                ctypes.int32_t.ptr);
+  acquire_string = library.declare("test_finalizer_acq_string_t",
+                                ctypes.default_abi,
+                                ctypes.char.ptr,
+                                ctypes.size_t);
+  dispose_string = library.declare("test_finalizer_rel_string_t",
+                                ctypes.default_abi,
+                                ctypes.void_t,
+                                ctypes.char.ptr);
+
+  tester.launch(10, test_to_string);
+  tester.launch(10, test_to_source);
+  tester.launch(10, test_to_int);
+  tester.launch(10, test_errno);
+  tester.launch(10, test_to_pointer);
+  tester.launch(10, test_readstring);
+}
+
+/**
+ * Check that toString succeeds before/after forget/dispose.
+ */
+function test_to_string()
+{
+  do_print("Starting test_to_string");
+  let a = ctypes.CDataFinalizer(acquire(0), dispose);
+  do_check_eq(a.toString(), "0");
+
+  a.forget();
+  do_check_eq(a.toString(), "[CDataFinalizer - empty]");
+
+  a = ctypes.CDataFinalizer(acquire(0), dispose);
+  a.dispose();
+  do_check_eq(a.toString(), "[CDataFinalizer - empty]");
+}
+
+/**
+ * Check that toSource succeeds before/after forget/dispose.
+ */
+function test_to_source()
+{
+  do_print("Starting test_to_source");
+  let value = acquire(0);
+  let a = ctypes.CDataFinalizer(value, dispose);
+  do_check_eq(a.toSource(),
+              "ctypes.CDataFinalizer("
+              + ctypes.size_t(value).toSource()
+              +", "
+              +dispose.toSource()
+              +")");
+  value = null;
+
+  a.forget();
+  do_check_eq(a.toSource(), "ctypes.CDataFinalizer()");
+
+  a = ctypes.CDataFinalizer(acquire(0), dispose);
+  a.dispose();
+  do_check_eq(a.toSource(), "ctypes.CDataFinalizer()");
+}
+
+/**
+ * Test conversion to int32
+ */
+function test_to_int()
+{
+  let value = 2;
+  let wrapped, converted, finalizable;
+  wrapped = ctypes.int32_t(value);
+  finalizable = ctypes.CDataFinalizer(acquire(value), dispose);
+  converted = ctypes.int32_t(finalizable);
+
+  structural_check_eq(converted, wrapped);
+  structural_check_eq(converted, ctypes.int32_t(finalizable.forget()));
+
+  finalizable = ctypes.CDataFinalizer(acquire(value), dispose);
+  wrapped = ctypes.int64_t(value);
+  converted = ctypes.int64_t(finalizable);
+  structural_check_eq(converted, wrapped);
+  finalizable.dispose();
+}
+
+/**
+ * Test that dispose can change errno but finalization cannot
+ */
+function test_errno(size, tc, cleanup)
+{
+  reset_errno();
+  do_check_eq(ctypes.errno, 0);
+
+  let finalizable = ctypes.CDataFinalizer(acquire(3), dispose_errno);
+  finalizable.dispose();
+  do_check_eq(ctypes.errno, 10);
+  reset_errno();
+
+  do_check_eq(ctypes.errno, 0);
+  for (let i = 0; i < size; ++i) {
+    finalizable = ctypes.CDataFinalizer(acquire(i), dispose_errno);
+    cleanup.add(finalizable);
+  }
+
+  trigger_gc();
+  do_check_eq(ctypes.errno, 0);
+}
+
+/**
+ * Check that a finalizable of a pointer can be used as a pointer
+ */
+function test_to_pointer()
+{
+  let ptr = ctypes.int32_t(2).address();
+  let finalizable = ctypes.CDataFinalizer(ptr, dispose_ptr);
+  let unwrapped = ctypes.int32_t.ptr(finalizable);
+
+  do_check_eq(""+ptr, ""+unwrapped);
+
+  finalizable.forget(); // Do not dispose: This is not a real pointer.
+}
+
+/**
+ * Test that readstring can be applied to a finalizer
+ */
+function test_readstring(size)
+{
+  for (let i = 0; i < size; ++i) {
+    let acquired = acquire_string(i);
+    let finalizable = ctypes.CDataFinalizer(acquired,
+      dispose_string);
+    do_check_eq(finalizable.readString(), acquired.readString());
+    finalizable.dispose();
+  }
+}
diff --git a/toolkit/components/ctypes/tests/unit/test_finalizer_shouldfail.js b/toolkit/components/ctypes/tests/unit/test_finalizer_shouldfail.js
new file mode 100644
index 000000000..ffbe1b613
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/test_finalizer_shouldfail.js
@@ -0,0 +1,176 @@
+try {
+  // We might be running without privileges, in which case it's up to the
+  // harness to give us the 'ctypes' object.
+  Components.utils.import("resource://gre/modules/ctypes.jsm");
+} catch (e) {
+}
+
+var acquire, dispose, null_dispose, compare, dispose_64;
+
+function run_test()
+{
+  let library = open_ctypes_test_lib();
+
+  let start = library.declare("test_finalizer_start", ctypes.default_abi,
+                          ctypes.void_t,
+                          ctypes.size_t);
+  let stop = library.declare("test_finalizer_stop", ctypes.default_abi,
+                             ctypes.void_t);
+  let tester = new ResourceTester(start, stop);
+  acquire = library.declare("test_finalizer_acq_size_t",
+                            ctypes.default_abi,
+                            ctypes.size_t,
+                            ctypes.size_t);
+  dispose = library.declare("test_finalizer_rel_size_t",
+                            ctypes.default_abi,
+                            ctypes.void_t,
+                            ctypes.size_t);
+  compare = library.declare("test_finalizer_cmp_size_t",
+                            ctypes.default_abi,
+                            ctypes.bool,
+                            ctypes.size_t,
+                            ctypes.size_t);
+
+  dispose_64 = library.declare("test_finalizer_rel_int64_t",
+                               ctypes.default_abi,
+                               ctypes.void_t,
+                               ctypes.int64_t);
+
+  let type_afun = ctypes.FunctionType(ctypes.default_abi,
+                                      ctypes.void_t,
+                                      [ctypes.size_t]).ptr;
+
+  let null_dispose_maker =
+    library.declare("test_finalizer_rel_null_function",
+                    ctypes.default_abi,
+                    type_afun
+                   );
+  null_dispose = null_dispose_maker();
+
+  tester.launch(10, test_double_dispose);
+  tester.launch(10, test_finalize_bad_construction);
+  tester.launch(10, test_null_dispose);
+  tester.launch(10, test_pass_disposed);
+  tester.launch(10, test_wrong_type);
+}
+
+
+/**
+ * Testing construction of finalizers with wrong arguments.
+ */
+function test_finalize_bad_construction() {
+  // First argument does not match second
+  must_throw(function() { ctypes.CDataFinalizer({}, dispose); });
+  must_throw(function() { ctypes.CDataFinalizer(dispose, dispose); });
+
+  // Not enough arguments
+  must_throw(function() { ctypes.CDataFinalizer(init(0)); });
+
+  // Too many arguments
+  must_throw(function() { ctypes.CDataFinalizer(init(0), dispose, dispose); });
+
+  // Second argument is null
+  must_throw(function() { ctypes.CDataFinalizer(init(0), null); });
+
+  // Second argument is undefined
+  must_throw(function() {
+    let a;
+    ctypes.CDataFinalizer(init(0), a);
+  });
+
+}
+
+/**
+ * Test that forget/dispose can only take place once.
+ */
+function test_double_dispose() {
+  function test_one_combination(i, a, b) {
+    let v = ctypes.CDataFinalizer(acquire(i), dispose);
+    a(v);
+    must_throw(function() { b(v); } );
+  }
+
+  let call_dispose = function(v) {
+    v.dispose();
+  };
+  let call_forget = function(v) {
+    v.forget();
+  };
+
+  test_one_combination(0, call_dispose, call_dispose);
+  test_one_combination(1, call_dispose, call_forget);
+  test_one_combination(2, call_forget, call_dispose);
+  test_one_combination(3, call_forget, call_forget);
+}
+
+
+/**
+ * Test that nothing (too) bad happens when the finalizer is NULL
+ */
+function test_null_dispose()
+{
+  let exception;
+
+  exception = false;
+  try {
+    ctypes.CDataFinalizer(acquire(0), null_dispose);
+  } catch (x) {
+    exception = true;
+  }
+  do_check_true(exception);
+}
+
+/**
+ * Test that conversion of a disposed/forgotten CDataFinalizer to a C
+ * value fails nicely.
+ */
+function test_pass_disposed()
+{
+  let exception, v;
+
+  exception = false;
+  v = ctypes.CDataFinalizer(acquire(0), dispose);
+  do_check_true(compare(v, 0));
+  v.forget();
+
+  try {
+    compare(v, 0);
+  } catch (x) {
+    exception = true;
+  }
+  do_check_true(exception);
+
+  exception = false;
+  v = ctypes.CDataFinalizer(acquire(0), dispose);
+  do_check_true(compare(v, 0));
+  v.dispose();
+
+  try {
+    compare(v, 0);
+  } catch (x) {
+    exception = true;
+  }
+  do_check_true(exception);
+
+  exception = false;
+  try {
+    ctypes.int32_t(ctypes.CDataFinalizer(v, dispose));
+  } catch (x) {
+    exception = true;
+  }
+  do_check_true(exception);
+}
+
+function test_wrong_type()
+{
+  let int32_v = ctypes.int32_t(99);
+  let exception;
+  try {
+    ctypes.CDataFinalizer(int32_v, dispose_64);
+  } catch (x) {
+    exception = x;
+  }
+
+  do_check_true(!!exception);
+  do_check_eq(exception.constructor.name, "TypeError");
+}
diff --git a/toolkit/components/ctypes/tests/unit/test_jsctypes.js b/toolkit/components/ctypes/tests/unit/test_jsctypes.js
new file mode 100644
index 000000000..ec35ee18e
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/test_jsctypes.js
@@ -0,0 +1,2808 @@
+/* -*-  indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+try {
+  // We might be running without privileges, in which case it's up to the
+  // harness to give us the 'ctypes' object.
+  Components.utils.import("resource://gre/modules/ctypes.jsm");
+} catch (e) {
+}
+
+CTYPES_TEST_LIB = ctypes.libraryName("jsctypes-test");
+CTYPES_UNICODE_LIB = ctypes.libraryName("jsctyp\u00E8s-t\u00EB\u00DFt");
+
+function do_check_throws(f, type, stack)
+{
+  if (!stack) {
+    try {
+      // We might not have a 'Components' object.
+      stack = Components.stack.caller;
+    } catch (e) {
+    }
+  }
+
+  try {
+    f();
+  } catch (exc) {
+    if (exc.constructor.name === type.name) {
+      do_check_true(true);
+      return;
+    }
+    do_throw("expected " + type.name + " exception, caught " + exc, stack);
+  }
+  do_throw("expected " + type.name + " exception, none thrown", stack);
+}
+
+function run_test()
+{
+  // Test ctypes.CType and ctypes.CData are set up correctly.
+  run_abstract_class_tests();
+
+  // open the library
+  let libfile = do_get_file(CTYPES_TEST_LIB);
+  let library = ctypes.open(libfile.path);
+
+  // Make sure we can call a function in the library.
+  run_void_tests(library);
+
+  // Test Int64 and UInt64.
+  run_Int64_tests();
+  run_UInt64_tests();
+
+  // Test the basic bool, integer, and float types.
+  run_bool_tests(library);
+
+  run_integer_tests(library, ctypes.int8_t, "int8_t", 1, true, [-0x80, 0x7f]);
+  run_integer_tests(library, ctypes.int16_t, "int16_t", 2, true, [-0x8000, 0x7fff]);
+  run_integer_tests(library, ctypes.int32_t, "int32_t", 4, true, [-0x80000000, 0x7fffffff]);
+  run_integer_tests(library, ctypes.uint8_t, "uint8_t", 1, false, [0, 0xff]);
+  run_integer_tests(library, ctypes.uint16_t, "uint16_t", 2, false, [0, 0xffff]);
+  run_integer_tests(library, ctypes.uint32_t, "uint32_t", 4, false, [0, 0xffffffff]);
+  run_integer_tests(library, ctypes.short, "short", 2, true, [-0x8000, 0x7fff]);
+  run_integer_tests(library, ctypes.unsigned_short, "unsigned_short", 2, false, [0, 0xffff]);
+  run_integer_tests(library, ctypes.int, "int", 4, true, [-0x80000000, 0x7fffffff]);
+  run_integer_tests(library, ctypes.unsigned_int, "unsigned_int", 4, false, [0, 0xffffffff]);
+  run_integer_tests(library, ctypes.unsigned, "unsigned_int", 4, false, [0, 0xffffffff]);
+
+  run_float_tests(library, ctypes.float32_t, "float32_t", 4);
+  run_float_tests(library, ctypes.float64_t, "float64_t", 8);
+  run_float_tests(library, ctypes.float, "float", 4);
+  run_float_tests(library, ctypes.double, "double", 8);
+
+  // Test the wrapped integer types.
+  s64limits = ["-9223372036854775808", "9223372036854775807",
+               "-9223372036854775809", "9223372036854775808"];
+  u64limits = ["0", "18446744073709551615", "-1", "18446744073709551616"];
+
+  run_wrapped_integer_tests(library, ctypes.int64_t, "int64_t", 8, true,
+                            ctypes.Int64, "ctypes.Int64", s64limits);
+  run_wrapped_integer_tests(library, ctypes.uint64_t, "uint64_t", 8, false,
+                            ctypes.UInt64, "ctypes.UInt64", u64limits);
+  run_wrapped_integer_tests(library, ctypes.long_long, "long_long", 8, true,
+                            ctypes.Int64, "ctypes.Int64", s64limits);
+  run_wrapped_integer_tests(library, ctypes.unsigned_long_long, "unsigned_long_long", 8, false,
+                            ctypes.UInt64, "ctypes.UInt64", u64limits);
+
+  s32limits = [-0x80000000, 0x7fffffff, -0x80000001, 0x80000000];
+  u32limits = [0, 0xffffffff, -1, 0x100000000];
+
+  let slimits, ulimits;
+  if (ctypes.long.size == 8) {
+    slimits = s64limits;
+    ulimits = u64limits;
+  } else if (ctypes.long.size == 4) {
+    slimits = s32limits;
+    ulimits = u32limits;
+  } else {
+    do_throw("ctypes.long is not 4 or 8 bytes");
+  }
+
+  run_wrapped_integer_tests(library, ctypes.long, "long", ctypes.long.size, true,
+                            ctypes.Int64, "ctypes.Int64", slimits);
+  run_wrapped_integer_tests(library, ctypes.unsigned_long, "unsigned_long", ctypes.long.size, false,
+                            ctypes.UInt64, "ctypes.UInt64", ulimits);
+
+  if (ctypes.size_t.size == 8) {
+    slimits = s64limits;
+    ulimits = u64limits;
+  } else if (ctypes.size_t.size == 4) {
+    slimits = s32limits;
+    ulimits = u32limits;
+  } else {
+    do_throw("ctypes.size_t is not 4 or 8 bytes");
+  }
+
+  run_wrapped_integer_tests(library, ctypes.size_t, "size_t", ctypes.size_t.size, false,
+                            ctypes.UInt64, "ctypes.UInt64", ulimits);
+  run_wrapped_integer_tests(library, ctypes.ssize_t, "ssize_t", ctypes.size_t.size, true,
+                            ctypes.Int64, "ctypes.Int64", slimits);
+  run_wrapped_integer_tests(library, ctypes.uintptr_t, "uintptr_t", ctypes.size_t.size, false,
+                            ctypes.UInt64, "ctypes.UInt64", ulimits);
+  run_wrapped_integer_tests(library, ctypes.intptr_t, "intptr_t", ctypes.size_t.size, true,
+                            ctypes.Int64, "ctypes.Int64", slimits);
+
+  if (ctypes.off_t.size == 8) {
+    slimits = s64limits;
+    ulimits = u64limits;
+  } else if (ctypes.off_t.size == 4) {
+    slimits = s32limits;
+    ulimits = u32limits;
+  } else {
+    do_throw("ctypes.off_t is not 4 or 8 bytes");
+  }
+  run_wrapped_integer_tests(library, ctypes.off_t, "off_t", ctypes.off_t.size, true,
+                            ctypes.Int64, "ctypes.Int64", slimits);
+
+  // Test the character types.
+  run_char_tests(library, ctypes.char, "char", 1, true, [-0x80, 0x7f]);
+  run_char_tests(library, ctypes.signed_char, "signed_char", 1, true, [-0x80, 0x7f]);
+  run_char_tests(library, ctypes.unsigned_char, "unsigned_char", 1, false, [0, 0xff]);
+  run_char16_tests(library, ctypes.char16_t, "char16_t", [0, 0xffff]);
+
+  // Test the special types.
+  run_StructType_tests();
+  run_PointerType_tests();
+  run_FunctionType_tests();
+  run_ArrayType_tests();
+
+  // Check that types print properly.
+  run_type_toString_tests();
+
+  // Test the 'name' and 'toSource' of a long typename.
+  let ptrTo_ptrTo_arrayOf4_ptrTo_int32s =
+    new ctypes.PointerType(
+      new ctypes.PointerType(
+        new ctypes.ArrayType(
+          new ctypes.PointerType(ctypes.int32_t), 4)));
+  do_check_eq(ptrTo_ptrTo_arrayOf4_ptrTo_int32s.name, "int32_t*(**)[4]");
+
+  let source_t = new ctypes.StructType("source",
+    [{ a: ptrTo_ptrTo_arrayOf4_ptrTo_int32s }, { b: ctypes.int64_t }]);
+  do_check_eq(source_t.toSource(),
+    'ctypes.StructType("source", [{ "a": ctypes.int32_t.ptr.array(4).ptr.ptr }, ' +
+    '{ "b": ctypes.int64_t }])');
+
+  // Test ctypes.cast.
+  run_cast_tests();
+
+  run_string_tests(library);
+  run_readstring_tests(library);
+  run_struct_tests(library);
+  run_function_tests(library);
+  run_closure_tests(library);
+  run_variadic_tests(library);
+  run_static_data_tests(library);
+  run_cpp_class_tests(library);
+
+  // test library.close
+  let test_void_t = library.declare("test_void_t_cdecl", ctypes.default_abi, ctypes.void_t);
+  library.close();
+  do_check_throws(function() { test_void_t(); }, Error);
+  do_check_throws(function() {
+    library.declare("test_void_t_cdecl", ctypes.default_abi, ctypes.void_t);
+  }, Error);
+
+  // test that library functions throw when bound to other objects
+  library = ctypes.open(libfile.path);
+  let obj = {};
+  obj.declare = library.declare;
+  do_check_throws(function () { run_void_tests(obj); }, Error);
+  obj.close = library.close;
+  do_check_throws(function () { obj.close(); }, Error);
+
+  // test that functions work as properties of other objects
+  let getter = library.declare("get_int8_t_cdecl", ctypes.default_abi, ctypes.int8_t);
+  do_check_eq(getter(), 109);
+  obj.t = getter;
+  do_check_eq(obj.t(), 109);
+
+  // bug 521937
+  do_check_throws(function () { let nolib = ctypes.open("notfoundlibrary.dll"); nolib.close(); }, Error);
+
+  // bug 522360
+  do_check_eq(run_load_system_library(), true);
+
+  // Test loading a library with a unicode name (bug 589413). Note that nsIFile
+  // implementations are not available in some harnesses; if not, the harness
+  // should take care of the copy for us.
+  let unicodefile = do_get_file(CTYPES_UNICODE_LIB, true);
+  let copy = libfile.copyTo instanceof Function;
+  if (copy)
+    libfile.copyTo(null, unicodefile.leafName);
+  library = ctypes.open(unicodefile.path);
+  run_void_tests(library);
+  library.close();
+  if (copy)
+    unicodefile.remove(false);
+}
+
+function run_abstract_class_tests()
+{
+  // Test that ctypes.CType is an abstract constructor that throws.
+  do_check_throws(function() { ctypes.CType(); }, TypeError);
+  do_check_throws(function() { new ctypes.CType() }, TypeError);
+
+  do_check_true(ctypes.CType.hasOwnProperty("prototype"));
+  do_check_throws(function() { ctypes.CType.prototype(); }, TypeError);
+  do_check_throws(function() { new ctypes.CType.prototype() }, TypeError);
+
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("constructor"));
+  do_check_true(ctypes.CType.prototype.constructor === ctypes.CType);
+
+  // Check that ctypes.CType.prototype has the correct properties and functions.
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("name"));
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("size"));
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("ptr"));
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("array"));
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("toString"));
+  do_check_true(ctypes.CType.prototype.hasOwnProperty("toSource"));
+
+  // Make sure we can access 'prototype' on a CTypeProto.
+  do_check_true(ctypes.CType.prototype.prototype === ctypes.CData.prototype);
+
+  // Check that the shared properties and functions on ctypes.CType.prototype throw.
+  do_check_throws(function() { ctypes.CType.prototype.name; }, TypeError);
+  do_check_throws(function() { ctypes.CType.prototype.size; }, TypeError);
+  do_check_throws(function() { ctypes.CType.prototype.ptr; }, TypeError);
+  do_check_throws(function() { ctypes.CType.prototype.array(); }, TypeError);
+
+
+  // toString and toSource are called by the web console during inspection,
+  // so we don't want them to throw.
+  do_check_eq(typeof ctypes.CType.prototype.toString(), 'string');
+  do_check_eq(typeof ctypes.CType.prototype.toSource(), 'string');
+
+  // Test that ctypes.CData is an abstract constructor that throws.
+  do_check_throws(function() { ctypes.CData(); }, TypeError);
+  do_check_throws(function() { new ctypes.CData() }, TypeError);
+
+  do_check_true(ctypes.CData.__proto__ === ctypes.CType.prototype);
+  do_check_true(ctypes.CData instanceof ctypes.CType);
+
+  do_check_true(ctypes.CData.hasOwnProperty("prototype"));
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("constructor"));
+  do_check_true(ctypes.CData.prototype.constructor === ctypes.CData);
+
+  // Check that ctypes.CData.prototype has the correct properties and functions.
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("value"));
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("address"));
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("readString"));
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("toString"));
+  do_check_true(ctypes.CData.prototype.hasOwnProperty("toSource"));
+
+  // Check that the shared properties and functions on ctypes.CData.prototype throw.
+  do_check_throws(function() { ctypes.CData.prototype.value; }, TypeError);
+  do_check_throws(function() { ctypes.CData.prototype.value = null; }, TypeError);
+  do_check_throws(function() { ctypes.CData.prototype.address(); }, TypeError);
+  do_check_throws(function() { ctypes.CData.prototype.readString(); }, TypeError);
+
+  // toString and toSource are called by the web console during inspection,
+  // so we don't want them to throw.
+  do_check_eq(ctypes.CData.prototype.toString(), '[CData proto object]');
+  do_check_eq(ctypes.CData.prototype.toSource(), '[CData proto object]');
+}
+
+function run_Int64_tests() {
+  do_check_throws(function() { ctypes.Int64(); }, TypeError);
+
+  do_check_true(ctypes.Int64.hasOwnProperty("prototype"));
+  do_check_true(ctypes.Int64.prototype.hasOwnProperty("constructor"));
+  do_check_true(ctypes.Int64.prototype.constructor === ctypes.Int64);
+
+  // Check that ctypes.Int64 and ctypes.Int64.prototype have the correct
+  // properties and functions.
+  do_check_true(ctypes.Int64.hasOwnProperty("compare"));
+  do_check_true(ctypes.Int64.hasOwnProperty("lo"));
+  do_check_true(ctypes.Int64.hasOwnProperty("hi"));
+  do_check_true(ctypes.Int64.hasOwnProperty("join"));
+  do_check_true(ctypes.Int64.prototype.hasOwnProperty("toString"));
+  do_check_true(ctypes.Int64.prototype.hasOwnProperty("toSource"));
+
+  // Check that the shared functions on ctypes.Int64.prototype throw.
+  do_check_throws(function() { ctypes.Int64.prototype.toString(); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.prototype.toSource(); }, TypeError);
+
+  let int64 = ctypes.Int64(0);
+  do_check_true(int64.__proto__ === ctypes.Int64.prototype);
+  do_check_true(int64 instanceof ctypes.Int64);
+
+  // Test Int64.toString([radix]).
+  do_check_eq(int64.toString(), "0");
+  for (let radix = 2; radix <= 36; ++radix)
+    do_check_eq(int64.toString(radix), "0");
+  do_check_throws(function() { int64.toString(0); }, RangeError);
+  do_check_throws(function() { int64.toString(1); }, RangeError);
+  do_check_throws(function() { int64.toString(37); }, RangeError);
+  do_check_throws(function() { int64.toString(10, 2); }, TypeError);
+
+  // Test Int64.toSource().
+  do_check_eq(int64.toSource(), "ctypes.Int64(\"0\")");
+  do_check_throws(function() { int64.toSource(10); }, TypeError);
+
+  int64 = ctypes.Int64("0x28590a1c921def71");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "2907366152271163249");
+  do_check_eq(int64.toString(16), "28590a1c921def71");
+  do_check_eq(int64.toString(2), "10100001011001000010100001110010010010000111011110111101110001");
+  do_check_eq(int64.toSource(), "ctypes.Int64(\"" + int64.toString(10) + "\")");
+
+  int64 = ctypes.Int64("-0x28590a1c921def71");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-2907366152271163249");
+  do_check_eq(int64.toString(16), "-28590a1c921def71");
+  do_check_eq(int64.toString(2), "-10100001011001000010100001110010010010000111011110111101110001");
+  do_check_eq(int64.toSource(), "ctypes.Int64(\"" + int64.toString(10) + "\")");
+
+  int64 = ctypes.Int64("-0X28590A1c921DEf71");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-2907366152271163249");
+  do_check_eq(int64.toString(16), "-28590a1c921def71");
+  do_check_eq(int64.toString(2), "-10100001011001000010100001110010010010000111011110111101110001");
+  do_check_eq(int64.toSource(), "ctypes.Int64(\"" + int64.toString(10) + "\")");
+
+  // Test Int64(primitive double) constructor.
+  int64 = ctypes.Int64(-0);
+  do_check_eq(int64.toString(), "0");
+
+  int64 = ctypes.Int64(0x7ffffffffffff000);
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "9223372036854771712");
+  do_check_eq(int64.toString(16), "7ffffffffffff000");
+  do_check_eq(int64.toString(2), "111111111111111111111111111111111111111111111111111000000000000");
+
+  int64 = ctypes.Int64(-0x8000000000000000);
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-9223372036854775808");
+  do_check_eq(int64.toString(16), "-8000000000000000");
+  do_check_eq(int64.toString(2), "-1000000000000000000000000000000000000000000000000000000000000000");
+
+  // Test Int64(string) constructor.
+  int64 = ctypes.Int64("0x7fffffffffffffff");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "9223372036854775807");
+  do_check_eq(int64.toString(16), "7fffffffffffffff");
+  do_check_eq(int64.toString(2), "111111111111111111111111111111111111111111111111111111111111111");
+
+  int64 = ctypes.Int64("-0x8000000000000000");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-9223372036854775808");
+  do_check_eq(int64.toString(16), "-8000000000000000");
+  do_check_eq(int64.toString(2), "-1000000000000000000000000000000000000000000000000000000000000000");
+
+  int64 = ctypes.Int64("9223372036854775807");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "9223372036854775807");
+  do_check_eq(int64.toString(16), "7fffffffffffffff");
+  do_check_eq(int64.toString(2), "111111111111111111111111111111111111111111111111111111111111111");
+
+  int64 = ctypes.Int64("-9223372036854775808");
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-9223372036854775808");
+  do_check_eq(int64.toString(16), "-8000000000000000");
+  do_check_eq(int64.toString(2), "-1000000000000000000000000000000000000000000000000000000000000000");
+
+  // Test Int64(other Int64) constructor.
+  int64 = ctypes.Int64(ctypes.Int64(0));
+  do_check_eq(int64.toString(), "0");
+
+  int64 = ctypes.Int64(ctypes.Int64("0x7fffffffffffffff"));
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "9223372036854775807");
+  do_check_eq(int64.toString(16), "7fffffffffffffff");
+  do_check_eq(int64.toString(2), "111111111111111111111111111111111111111111111111111111111111111");
+
+  int64 = ctypes.Int64(ctypes.Int64("-0x8000000000000000"));
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "-9223372036854775808");
+  do_check_eq(int64.toString(16), "-8000000000000000");
+  do_check_eq(int64.toString(2), "-1000000000000000000000000000000000000000000000000000000000000000");
+
+  // Test Int64(other UInt64) constructor.
+  int64 = ctypes.Int64(ctypes.UInt64(0));
+  do_check_eq(int64.toString(), "0");
+
+  int64 = ctypes.Int64(ctypes.UInt64("0x7fffffffffffffff"));
+  do_check_eq(int64.toString(), int64.toString(10));
+  do_check_eq(int64.toString(10), "9223372036854775807");
+  do_check_eq(int64.toString(16), "7fffffffffffffff");
+  do_check_eq(int64.toString(2), "111111111111111111111111111111111111111111111111111111111111111");
+
+  let vals = [-0x8000000000001000, 0x8000000000000000,
+              ctypes.UInt64("0x8000000000000000"),
+              Infinity, -Infinity, NaN, 0.1,
+              5.68e21, null, undefined, "", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { ctypes.Int64(vals[i]); }, TypeError);
+
+  vals = ["-0x8000000000000001", "0x8000000000000000"];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { ctypes.Int64(vals[i]); }, RangeError);
+
+  // Test ctypes.Int64.compare.
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(5), ctypes.Int64(5)), 0);
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(5), ctypes.Int64(4)), 1);
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(4), ctypes.Int64(5)), -1);
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(-5), ctypes.Int64(-5)), 0);
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(-5), ctypes.Int64(-4)), -1);
+  do_check_eq(ctypes.Int64.compare(ctypes.Int64(-4), ctypes.Int64(-5)), 1);
+  do_check_throws(function() { ctypes.Int64.compare(ctypes.Int64(4), ctypes.UInt64(4)); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.compare(4, 5); }, TypeError);
+
+  // Test ctypes.Int64.{lo,hi}.
+  do_check_eq(ctypes.Int64.lo(ctypes.Int64(0x28590a1c921de000)), 0x921de000);
+  do_check_eq(ctypes.Int64.hi(ctypes.Int64(0x28590a1c921de000)), 0x28590a1c);
+  do_check_eq(ctypes.Int64.lo(ctypes.Int64(-0x28590a1c921de000)), 0x6de22000);
+  do_check_eq(ctypes.Int64.hi(ctypes.Int64(-0x28590a1c921de000)), -0x28590a1d);
+  do_check_throws(function() { ctypes.Int64.lo(ctypes.UInt64(0)); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.hi(ctypes.UInt64(0)); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.lo(0); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.hi(0); }, TypeError);
+
+  // Test ctypes.Int64.join.
+  do_check_eq(ctypes.Int64.join(0, 0).toString(), "0");
+  do_check_eq(ctypes.Int64.join(0x28590a1c, 0x921de000).toString(16), "28590a1c921de000");
+  do_check_eq(ctypes.Int64.join(-0x28590a1d, 0x6de22000).toString(16), "-28590a1c921de000");
+  do_check_eq(ctypes.Int64.join(0x7fffffff, 0xffffffff).toString(16), "7fffffffffffffff");
+  do_check_eq(ctypes.Int64.join(-0x80000000, 0x00000000).toString(16), "-8000000000000000");
+  do_check_throws(function() { ctypes.Int64.join(-0x80000001, 0); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.join(0x80000000, 0); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.join(0, -0x1); }, TypeError);
+  do_check_throws(function() { ctypes.Int64.join(0, 0x800000000); }, TypeError);
+}
+
+function run_UInt64_tests() {
+  do_check_throws(function() { ctypes.UInt64(); }, TypeError);
+
+  do_check_true(ctypes.UInt64.hasOwnProperty("prototype"));
+  do_check_true(ctypes.UInt64.prototype.hasOwnProperty("constructor"));
+  do_check_true(ctypes.UInt64.prototype.constructor === ctypes.UInt64);
+
+  // Check that ctypes.UInt64 and ctypes.UInt64.prototype have the correct
+  // properties and functions.
+  do_check_true(ctypes.UInt64.hasOwnProperty("compare"));
+  do_check_true(ctypes.UInt64.hasOwnProperty("lo"));
+  do_check_true(ctypes.UInt64.hasOwnProperty("hi"));
+  do_check_true(ctypes.UInt64.hasOwnProperty("join"));
+  do_check_true(ctypes.UInt64.prototype.hasOwnProperty("toString"));
+  do_check_true(ctypes.UInt64.prototype.hasOwnProperty("toSource"));
+
+  // Check that the shared functions on ctypes.UInt64.prototype throw.
+  do_check_throws(function() { ctypes.UInt64.prototype.toString(); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.prototype.toSource(); }, TypeError);
+
+  let uint64 = ctypes.UInt64(0);
+  do_check_true(uint64.__proto__ === ctypes.UInt64.prototype);
+  do_check_true(uint64 instanceof ctypes.UInt64);
+
+  // Test UInt64.toString([radix]).
+  do_check_eq(uint64.toString(), "0");
+  for (let radix = 2; radix <= 36; ++radix)
+    do_check_eq(uint64.toString(radix), "0");
+  do_check_throws(function() { uint64.toString(0); }, RangeError);
+  do_check_throws(function() { uint64.toString(1); }, RangeError);
+  do_check_throws(function() { uint64.toString(37); }, RangeError);
+  do_check_throws(function() { uint64.toString(10, 2); }, TypeError);
+
+  // Test UInt64.toSource().
+  do_check_eq(uint64.toSource(), "ctypes.UInt64(\"0\")");
+  do_check_throws(function() { uint64.toSource(10); }, TypeError);
+
+  uint64 = ctypes.UInt64("0x28590a1c921def71");
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "2907366152271163249");
+  do_check_eq(uint64.toString(16), "28590a1c921def71");
+  do_check_eq(uint64.toString(2), "10100001011001000010100001110010010010000111011110111101110001");
+  do_check_eq(uint64.toSource(), "ctypes.UInt64(\"" + uint64.toString(10) + "\")");
+
+  uint64 = ctypes.UInt64("0X28590A1c921DEf71");
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "2907366152271163249");
+  do_check_eq(uint64.toString(16), "28590a1c921def71");
+  do_check_eq(uint64.toString(2), "10100001011001000010100001110010010010000111011110111101110001");
+  do_check_eq(uint64.toSource(), "ctypes.UInt64(\"" + uint64.toString(10) + "\")");
+
+  // Test UInt64(primitive double) constructor.
+  uint64 = ctypes.UInt64(-0);
+  do_check_eq(uint64.toString(), "0");
+
+  uint64 = ctypes.UInt64(0xfffffffffffff000);
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "18446744073709547520");
+  do_check_eq(uint64.toString(16), "fffffffffffff000");
+  do_check_eq(uint64.toString(2), "1111111111111111111111111111111111111111111111111111000000000000");
+
+  // Test UInt64(string) constructor.
+  uint64 = ctypes.UInt64("0xffffffffffffffff");
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "18446744073709551615");
+  do_check_eq(uint64.toString(16), "ffffffffffffffff");
+  do_check_eq(uint64.toString(2), "1111111111111111111111111111111111111111111111111111111111111111");
+
+  uint64 = ctypes.UInt64("0x0");
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "0");
+  do_check_eq(uint64.toString(16), "0");
+  do_check_eq(uint64.toString(2), "0");
+
+  uint64 = ctypes.UInt64("18446744073709551615");
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "18446744073709551615");
+  do_check_eq(uint64.toString(16), "ffffffffffffffff");
+  do_check_eq(uint64.toString(2), "1111111111111111111111111111111111111111111111111111111111111111");
+
+  uint64 = ctypes.UInt64("0");
+  do_check_eq(uint64.toString(), "0");
+
+  // Test UInt64(other UInt64) constructor.
+  uint64 = ctypes.UInt64(ctypes.UInt64(0));
+  do_check_eq(uint64.toString(), "0");
+
+  uint64 = ctypes.UInt64(ctypes.UInt64("0xffffffffffffffff"));
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "18446744073709551615");
+  do_check_eq(uint64.toString(16), "ffffffffffffffff");
+  do_check_eq(uint64.toString(2), "1111111111111111111111111111111111111111111111111111111111111111");
+
+  uint64 = ctypes.UInt64(ctypes.UInt64("0x0"));
+  do_check_eq(uint64.toString(), "0");
+
+  // Test UInt64(other Int64) constructor.
+  uint64 = ctypes.UInt64(ctypes.Int64(0));
+  do_check_eq(uint64.toString(), "0");
+
+  uint64 = ctypes.UInt64(ctypes.Int64("0x7fffffffffffffff"));
+  do_check_eq(uint64.toString(), uint64.toString(10));
+  do_check_eq(uint64.toString(10), "9223372036854775807");
+  do_check_eq(uint64.toString(16), "7fffffffffffffff");
+  do_check_eq(uint64.toString(2), "111111111111111111111111111111111111111111111111111111111111111");
+
+  let vals = [-1, 0x10000000000000000, "-1", "-0x1",
+              ctypes.Int64("-1"), Infinity, -Infinity, NaN, 0.1,
+              5.68e21, null, undefined, "", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { ctypes.UInt64(vals[i]); }, TypeError);
+
+  vals = ["0x10000000000000000"];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { ctypes.UInt64(vals[i]); }, RangeError);
+
+  // Test ctypes.UInt64.compare.
+  do_check_eq(ctypes.UInt64.compare(ctypes.UInt64(5), ctypes.UInt64(5)), 0);
+  do_check_eq(ctypes.UInt64.compare(ctypes.UInt64(5), ctypes.UInt64(4)), 1);
+  do_check_eq(ctypes.UInt64.compare(ctypes.UInt64(4), ctypes.UInt64(5)), -1);
+  do_check_throws(function() { ctypes.UInt64.compare(ctypes.UInt64(4), ctypes.Int64(4)); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.compare(4, 5); }, TypeError);
+
+  // Test ctypes.UInt64.{lo,hi}.
+  do_check_eq(ctypes.UInt64.lo(ctypes.UInt64(0x28590a1c921de000)), 0x921de000);
+  do_check_eq(ctypes.UInt64.hi(ctypes.UInt64(0x28590a1c921de000)), 0x28590a1c);
+  do_check_eq(ctypes.UInt64.lo(ctypes.UInt64(0xa8590a1c921de000)), 0x921de000);
+  do_check_eq(ctypes.UInt64.hi(ctypes.UInt64(0xa8590a1c921de000)), 0xa8590a1c);
+  do_check_throws(function() { ctypes.UInt64.lo(ctypes.Int64(0)); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.hi(ctypes.Int64(0)); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.lo(0); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.hi(0); }, TypeError);
+
+  // Test ctypes.UInt64.join.
+  do_check_eq(ctypes.UInt64.join(0, 0).toString(), "0");
+  do_check_eq(ctypes.UInt64.join(0x28590a1c, 0x921de000).toString(16), "28590a1c921de000");
+  do_check_eq(ctypes.UInt64.join(0xa8590a1c, 0x921de000).toString(16), "a8590a1c921de000");
+  do_check_eq(ctypes.UInt64.join(0xffffffff, 0xffffffff).toString(16), "ffffffffffffffff");
+  do_check_eq(ctypes.UInt64.join(0, 0).toString(16), "0");
+  do_check_throws(function() { ctypes.UInt64.join(-0x1, 0); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.join(0x100000000, 0); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.join(0, -0x1); }, TypeError);
+  do_check_throws(function() { ctypes.UInt64.join(0, 0x1000000000); }, TypeError);
+}
+
+function run_basic_abi_tests(library, t, name, toprimitive,
+                             get_test, set_tests, sum_tests, sum_many_tests) {
+  // Test the function call ABI for calls involving the type.
+  function declare_fn_cdecl(fn_t, prefix) {
+    return library.declare(prefix + name + "_cdecl", fn_t);
+  }
+  run_single_abi_tests(declare_fn_cdecl, ctypes.default_abi, t,
+    toprimitive, get_test, set_tests, sum_tests, sum_many_tests);
+
+  if ("winLastError" in ctypes) {
+    function declare_fn_stdcall(fn_t, prefix) {
+      return library.declare(prefix + name + "_stdcall", fn_t);
+    }
+    run_single_abi_tests(declare_fn_stdcall, ctypes.stdcall_abi, t,
+                         toprimitive, get_test, set_tests, sum_tests, sum_many_tests);
+
+    // Check that declaring a WINAPI function gets the right symbol name.
+    let libuser32 = ctypes.open("user32.dll");
+    let charupper = libuser32.declare("CharUpperA",
+                                      ctypes.winapi_abi,
+                                      ctypes.char.ptr,
+                                      ctypes.char.ptr);
+    let hello = ctypes.char.array()("hello!");
+    do_check_eq(charupper(hello).readString(), "HELLO!");
+  }
+
+  // Check the alignment of the type, and its behavior in a struct,
+  // against what C says.
+  check_struct_stats(library, t);
+
+  // Check the ToSource functions defined in the namespace ABI
+  do_check_eq(ctypes.default_abi.toSource(), "ctypes.default_abi");
+
+  let exn;
+  try {
+    ctypes.default_abi.toSource.call(null);
+  } catch (x) {
+    exn = x;
+  }
+  do_check_true(!!exn); // Check that some exception was raised
+}
+
+function run_single_abi_tests(decl, abi, t, toprimitive,
+                              get_test, set_tests, sum_tests, sum_many_tests) {
+  let getter_t = ctypes.FunctionType(abi, t).ptr;
+  let getter = decl(getter_t, "get_");
+  do_check_eq(toprimitive(getter()), get_test);
+
+  let setter_t = ctypes.FunctionType(abi, t, [t]).ptr;
+  let setter = decl(setter_t, "set_");
+  for (let i of set_tests)
+    do_check_eq(toprimitive(setter(i)), i);
+
+  let sum_t = ctypes.FunctionType(abi, t, [t, t]).ptr;
+  let sum = decl(sum_t, "sum_");
+  for (let a of sum_tests)
+    do_check_eq(toprimitive(sum(a[0], a[1])), a[2]);
+
+  let sum_alignb_t = ctypes.FunctionType(abi, t,
+    [ctypes.char, t, ctypes.char, t, ctypes.char]).ptr;
+  let sum_alignb = decl(sum_alignb_t, "sum_alignb_");
+  let sum_alignf_t = ctypes.FunctionType(abi, t,
+    [ctypes.float, t, ctypes.float, t, ctypes.float]).ptr;
+  let sum_alignf = decl(sum_alignf_t, "sum_alignf_");
+  for (let a of sum_tests) {
+    do_check_eq(toprimitive(sum_alignb(0, a[0], 0, a[1], 0)), a[2]);
+    do_check_eq(toprimitive(sum_alignb(1, a[0], 1, a[1], 1)), a[2]);
+    do_check_eq(toprimitive(sum_alignf(0, a[0], 0, a[1], 0)), a[2]);
+    do_check_eq(toprimitive(sum_alignf(1, a[0], 1, a[1], 1)), a[2]);
+  }
+
+  let sum_many_t = ctypes.FunctionType(abi, t,
+    [t, t, t, t, t, t, t, t, t, t, t, t, t, t, t, t, t, t]).ptr;
+  let sum_many = decl(sum_many_t, "sum_many_");
+  for (let a of sum_many_tests)
+    do_check_eq(
+      toprimitive(sum_many(a[0], a[1], a[2], a[3], a[4], a[5], a[6], a[7],
+                           a[8], a[9], a[10], a[11], a[12], a[13], a[14], a[15],
+                           a[16], a[17])), a[18]);
+}
+
+function check_struct_stats(library, t) {
+  let s_t = ctypes.StructType("s_t", [{ x: ctypes.char }, { y: t }]);
+  let n_t = ctypes.StructType("n_t", [{ a: ctypes.char }, { b: s_t }, { c: ctypes.char }]);
+  let get_stats = library.declare("get_" + t.name + "_stats",
+    ctypes.default_abi, ctypes.void_t,
+    ctypes.size_t.ptr, ctypes.size_t.ptr, ctypes.size_t.ptr, ctypes.size_t.ptr,
+    ctypes.size_t.array());
+
+  let align = ctypes.size_t();
+  let size = ctypes.size_t();
+  let nalign = ctypes.size_t();
+  let nsize = ctypes.size_t();
+  let offsets = ctypes.size_t.array(3)();
+  get_stats(align.address(), size.address(), nalign.address(), nsize.address(),
+            offsets);
+
+  do_check_eq(size.value, s_t.size);
+  do_check_eq(align.value, s_t.size - t.size);
+  do_check_eq(align.value, offsetof(s_t, "y"));
+  do_check_eq(nsize.value, n_t.size);
+  do_check_eq(nalign.value, offsetof(n_t, "b"));
+  do_check_eq(offsets[0], offsetof(s_t, "y"));
+  do_check_eq(offsets[1], offsetof(n_t, "b"));
+  do_check_eq(offsets[2], offsetof(n_t, "c"));
+}
+
+// Determine the offset, in bytes, of 'member' within 'struct'.
+function offsetof(struct, member) {
+  let instance = struct();
+  let memberptr = ptrValue(instance.addressOfField(member));
+  let chararray = ctypes.cast(instance, ctypes.char.array(struct.size));
+  let offset = 0;
+  while (memberptr != ptrValue(chararray.addressOfElement(offset)))
+    ++offset;
+  return offset;
+}
+
+// Test the class and prototype hierarchy for a given basic type 't'.
+function run_basic_class_tests(t)
+{
+  do_check_true(t.__proto__ === ctypes.CType.prototype);
+  do_check_true(t instanceof ctypes.CType);
+
+  do_check_true(t.prototype.__proto__ === ctypes.CData.prototype);
+  do_check_true(t.prototype instanceof ctypes.CData);
+  do_check_true(t.prototype.constructor === t);
+
+  // Check that the shared properties and functions on 't.prototype' throw.
+  do_check_throws(function() { t.prototype.value; }, TypeError);
+  do_check_throws(function() { t.prototype.value = null; }, TypeError);
+  do_check_throws(function() { t.prototype.address(); }, TypeError);
+  do_check_throws(function() { t.prototype.readString(); }, TypeError);
+
+  // toString and toSource are called by the web console during inspection,
+  // so we don't want them to throw.
+  do_check_eq(t.prototype.toString(), '[CData proto object]');
+  do_check_eq(t.prototype.toSource(), '[CData proto object]');
+
+  // Test that an instance 'd' of 't' is a CData.
+  let d = t();
+  do_check_true(d.__proto__ === t.prototype);
+  do_check_true(d instanceof t);
+  do_check_true(d.constructor === t);
+}
+
+function run_bool_tests(library) {
+  let t = ctypes.bool;
+  run_basic_class_tests(t);
+
+  let name = "bool";
+  do_check_eq(t.name, name);
+  do_check_true(t.size == 1 || t.size == 4);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  let d = t();
+  do_check_eq(d.value, 0);
+  d.value = 1;
+  do_check_eq(d.value, 1);
+  d.value = -0;
+  do_check_eq(1/d.value, 1/0);
+  d.value = false;
+  do_check_eq(d.value, 0);
+  d.value = true;
+  do_check_eq(d.value, 1);
+  d = new t(1);
+  do_check_eq(d.value, 1);
+
+  // don't convert anything else
+  let vals = [-1, 2, Infinity, -Infinity, NaN, 0.1,
+              ctypes.Int64(0), ctypes.UInt64(0),
+              null, undefined, "", "0", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents, d.value);
+  do_check_eq(d.toSource(), "ctypes." + name + "(" + d.value + ")");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  function toprimitive(a) { return a; }
+  run_basic_abi_tests(library, t, name, toprimitive,
+    true,
+    [ false, true ],
+    [ [ false, false, false ], [ false, true, true ],
+      [ true, false, true ], [true, true, true ] ],
+    [ [ false, false, false, false, false, false, false, false, false,
+        false, false, false, false, false, false, false, false, false,
+        false ],
+      [ true, true, true, true, true, true, true, true, true,
+        true, true, true, true, true, true, true, true, true,
+        true ] ]);
+}
+
+function run_integer_tests(library, t, name, size, signed, limits) {
+  run_basic_class_tests(t);
+
+  do_check_eq(t.name, name);
+  do_check_eq(t.size, size);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  // Check the alignment of the type, and its behavior in a struct,
+  // against what C says.
+  check_struct_stats(library, t);
+
+  let d = t();
+  do_check_eq(d.value, 0);
+  d.value = 5;
+  do_check_eq(d.value, 5);
+  d = t(10);
+  do_check_eq(d.value, 10);
+  if (signed) {
+    d.value = -10;
+    do_check_eq(d.value, -10);
+  }
+  d = new t(20);
+  do_check_eq(d.value, 20);
+
+  d.value = ctypes.Int64(5);
+  do_check_eq(d.value, 5);
+  if (signed) {
+    d.value = ctypes.Int64(-5);
+    do_check_eq(d.value, -5);
+  }
+  d.value = ctypes.UInt64(5);
+  do_check_eq(d.value, 5);
+
+  d.value = limits[0];
+  do_check_eq(d.value, limits[0]);
+  d.value = limits[1];
+  do_check_eq(d.value, limits[1]);
+  d.value = 0;
+  do_check_eq(d.value, 0);
+  d.value = -0;
+  do_check_eq(1/d.value, 1/0);
+  d.value = false;
+  do_check_eq(d.value, 0);
+  d.value = true;
+  do_check_eq(d.value, 1);
+
+  // don't convert anything else
+  let vals = [limits[0] - 1, limits[1] + 1, Infinity, -Infinity, NaN, 0.1,
+              null, undefined, "", "0", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents, d.value);
+  do_check_eq(d.toSource(), "ctypes." + name + "(" + d.value + ")");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  function toprimitive(a) { return a; }
+  run_basic_abi_tests(library, t, name, toprimitive,
+    109,
+    [ 0, limits[0], limits[1] ],
+    [ [ 0, 0, 0 ], [ 0, 1, 1 ], [ 1, 0, 1 ], [ 1, 1, 2 ],
+      [ limits[0], 1, limits[0] + 1 ],
+      [ limits[1], 1, limits[0] ] ],
+    [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0 ],
+      [ 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1,
+        18 ] ]);
+}
+
+function run_float_tests(library, t, name, size) {
+  run_basic_class_tests(t);
+
+  do_check_eq(t.name, name);
+  do_check_eq(t.size, size);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  let d = t();
+  do_check_eq(d.value, 0);
+  d.value = 5;
+  do_check_eq(d.value, 5);
+  d.value = 5.25;
+  do_check_eq(d.value, 5.25);
+  d = t(10);
+  do_check_eq(d.value, 10);
+  d.value = -10;
+  do_check_eq(d.value, -10);
+  d = new t(20);
+  do_check_eq(d.value, 20);
+
+  do_check_throws(function() { d.value = ctypes.Int64(5); }, TypeError);
+  do_check_throws(function() { d.value = ctypes.Int64(-5); }, TypeError);
+  do_check_throws(function() { d.value = ctypes.UInt64(5); }, TypeError);
+
+  if (size == 4) {
+    d.value = 0x7fffff;
+    do_check_eq(d.value, 0x7fffff);
+
+    // allow values that can't be represented precisely as a float
+    d.value = 0xffffffff;
+    let delta = 1 - d.value/0xffffffff;
+    do_check_true(delta != 0);
+    do_check_true(delta > -0.01 && delta < 0.01);
+    d.value = 1 + 1/0x80000000;
+    do_check_eq(d.value, 1);
+  } else {
+    d.value = 0xfffffffffffff000;
+    do_check_eq(d.value, 0xfffffffffffff000);
+
+    do_check_throws(function() { d.value = ctypes.Int64("0x7fffffffffffffff"); }, TypeError);
+  }
+
+  d.value = Infinity;
+  do_check_eq(d.value, Infinity);
+  d.value = -Infinity;
+  do_check_eq(d.value, -Infinity);
+  d.value = NaN;
+  do_check_true(isNaN(d.value));
+  d.value = 0;
+  do_check_eq(d.value, 0);
+  d.value = -0;
+  do_check_eq(1/d.value, 1/-0);
+
+  // don't convert anything else
+  let vals = [true, false, null, undefined, "", "0", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  // Check that values roundtrip through toSource() correctly.
+  function test_roundtrip(tFn, val)
+  {
+    let f1 = tFn(val);
+    eval("var f2 = " + f1.toSource());
+    do_check_eq(f1.value, f2.value);
+  }
+  vals = [Infinity, -Infinity, -0, 0, 1, -1, 1/3, -1/3, 1/4, -1/4,
+          1e-14, -1e-14, 0xfffffffffffff000, -0xfffffffffffff000];
+  for (let i = 0; i < vals.length; i++)
+    test_roundtrip(t, vals[i]);
+  do_check_eq(t(NaN).toSource(), t.toSource() + "(NaN)");
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents, d.value);
+  do_check_eq(d.toSource(), "ctypes." + name + "(" + d.value + ")");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  let operand = [];
+  if (size == 4) {
+    operand[0] = 503859.75;
+    operand[1] = 1012385.25;
+    operand[2] = 1516245;
+  } else {
+    operand[0] = 501823873859.75;
+    operand[1] = 171290577385.25;
+    operand[2] = 673114451245;
+  }
+  function toprimitive(a) { return a; }
+  run_basic_abi_tests(library, t, name, toprimitive,
+    109.25,
+    [ 0, operand[0], operand[1] ],
+    [ [ 0, 0, 0 ], [ 0, 1, 1 ], [ 1, 0, 1 ], [ 1, 1, 2 ],
+      [ operand[0], operand[1], operand[2] ] ],
+    [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0 ],
+      [ 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1,
+        18 ] ]);
+}
+
+function run_wrapped_integer_tests(library, t, name, size, signed, w, wname, limits) {
+  run_basic_class_tests(t);
+
+  do_check_eq(t.name, name);
+  do_check_eq(t.size, size);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  let d = t();
+  do_check_true(d.value instanceof w);
+  do_check_eq(d.value, 0);
+  d.value = 5;
+  do_check_eq(d.value, 5);
+  d = t(10);
+  do_check_eq(d.value, 10);
+  if (signed) {
+    d.value = -10;
+    do_check_eq(d.value, -10);
+  }
+  d = new t(20);
+  do_check_eq(d.value, 20);
+
+  d.value = ctypes.Int64(5);
+  do_check_eq(d.value, 5);
+  if (signed) {
+    d.value = ctypes.Int64(-5);
+    do_check_eq(d.value, -5);
+  }
+  d.value = ctypes.UInt64(5);
+  do_check_eq(d.value, 5);
+
+  d.value = w(limits[0]);
+  do_check_eq(d.value, limits[0]);
+  d.value = w(limits[1]);
+  do_check_eq(d.value, limits[1]);
+  d.value = 0;
+  do_check_eq(d.value, 0);
+  d.value = -0;
+  do_check_eq(1/d.value, 1/0);
+  d.value = false;
+  do_check_eq(d.value, 0);
+  d.value = true;
+  do_check_eq(d.value, 1);
+
+  // don't convert anything else
+  let vals = [limits[2], limits[3], Infinity, -Infinity, NaN, 0.1,
+              null, undefined, "", "0", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents.toString(), d.value.toString());
+  do_check_eq(d.toSource(), "ctypes." + name + "(" + wname + "(\"" + d.value + "\"))");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  function toprimitive(a) { return a.toString(); }
+  run_basic_abi_tests(library, t, name, toprimitive,
+    109,
+    [ 0, w(limits[0]), w(limits[1]) ],
+    [ [ 0, 0, 0 ], [ 0, 1, 1 ], [ 1, 0, 1 ], [ 1, 1, 2 ],
+      signed ? [ w(limits[0]), -1, w(limits[1]) ]
+             : [ w(limits[1]), 1, w(limits[0]) ] ],
+    [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0 ],
+      [ 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1,
+        18 ] ]);
+}
+
+function run_char_tests(library, t, name, size, signed, limits) {
+  run_basic_class_tests(t);
+
+  do_check_eq(t.name, name);
+  do_check_eq(t.size, size);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  let d = t();
+  do_check_eq(d.value, 0);
+  d.value = 5;
+  do_check_eq(d.value, 5);
+  d = t(10);
+  do_check_eq(d.value, 10);
+  if (signed) {
+    d.value = -10;
+    do_check_eq(d.value, -10);
+  } else {
+    do_check_throws(function() { d.value = -10; }, TypeError);
+  }
+  d = new t(20);
+  do_check_eq(d.value, 20);
+
+  function toprimitive(a) { return a; }
+
+  d.value = ctypes.Int64(5);
+  do_check_eq(d.value, 5);
+  if (signed) {
+    d.value = ctypes.Int64(-10);
+    do_check_eq(d.value, -10);
+  }
+  d.value = ctypes.UInt64(5);
+  do_check_eq(d.value, 5);
+
+  d.value = limits[0];
+  do_check_eq(d.value, limits[0]);
+  d.value = limits[1];
+  do_check_eq(d.value, limits[1]);
+  d.value = 0;
+  do_check_eq(d.value, 0);
+  d.value = -0;
+  do_check_eq(1/d.value, 1/0);
+  d.value = false;
+  do_check_eq(d.value, 0);
+  d.value = true;
+  do_check_eq(d.value, 1);
+
+  do_check_throws(function() { d.value = "5"; }, TypeError);
+
+  // don't convert anything else
+  let vals = [limits[0] - 1, limits[1] + 1, Infinity, -Infinity, NaN, 0.1,
+              null, undefined, "", "aa", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents, 1);
+  do_check_eq(d.toSource(), "ctypes." + name + "(" + d.value + ")");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test string autoconversion (and lack thereof).
+  let literal = "autoconverted";
+  let s = t.array()(literal);
+  do_check_eq(s.readString(), literal);
+  do_check_eq(s.constructor.length, literal.length + 1);
+  s = t.array(50)(literal);
+  do_check_eq(s.readString(), literal);
+  do_check_throws(function() { t.array(3)(literal); }, TypeError);
+
+  do_check_throws(function() { t.ptr(literal); }, TypeError);
+  let p = t.ptr(s);
+  do_check_eq(p.readString(), literal);
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  run_basic_abi_tests(library, t, name, toprimitive,
+    109,
+    [ 0, limits[0], limits[1] ],
+    [ [ 0, 0, 0 ], [ 0, 1, 1 ], [ 1, 0, 1 ], [ 1, 1, 2 ],
+      [ limits[0], 1, limits[0] + 1 ],
+      [ limits[1], 1, limits[0] ] ],
+    [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0 ],
+      [ 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1,
+        18 ] ]);
+}
+
+function run_char16_tests(library, t, name, limits) {
+  run_basic_class_tests(t);
+
+  do_check_eq(t.name, name);
+  do_check_eq(t.size, 2);
+
+  do_check_eq(t.toString(), "type " + name);
+  do_check_eq(t.toSource(), "ctypes." + name);
+  do_check_true(t.ptr === ctypes.PointerType(t));
+  do_check_eq(t.array().name, name + "[]");
+  do_check_eq(t.array(5).name, name + "[5]");
+
+  function toprimitive(a) { return a.charCodeAt(0); }
+
+  let d = t();
+  do_check_eq(d.value.length, 1);
+  do_check_eq(toprimitive(d.value), 0);
+  d.value = 5;
+  do_check_eq(d.value.length, 1);
+  do_check_eq(toprimitive(d.value), 5);
+  d = t(10);
+  do_check_eq(toprimitive(d.value), 10);
+  do_check_throws(function() { d.value = -10; }, TypeError);
+  d = new t(20);
+  do_check_eq(toprimitive(d.value), 20);
+
+  d.value = ctypes.Int64(5);
+  do_check_eq(d.value.charCodeAt(0), 5);
+  do_check_throws(function() { d.value = ctypes.Int64(-10); }, TypeError);
+  d.value = ctypes.UInt64(5);
+  do_check_eq(d.value.charCodeAt(0), 5);
+
+  d.value = limits[0];
+  do_check_eq(toprimitive(d.value), limits[0]);
+  d.value = limits[1];
+  do_check_eq(toprimitive(d.value), limits[1]);
+  d.value = 0;
+  do_check_eq(toprimitive(d.value), 0);
+  d.value = -0;
+  do_check_eq(1/toprimitive(d.value), 1/0);
+  d.value = false;
+  do_check_eq(toprimitive(d.value), 0);
+  d.value = true;
+  do_check_eq(toprimitive(d.value), 1);
+
+  d.value = "\0";
+  do_check_eq(toprimitive(d.value), 0);
+  d.value = "a";
+  do_check_eq(d.value, "a");
+
+  // don't convert anything else
+  let vals = [limits[0] - 1, limits[1] + 1, Infinity, -Infinity, NaN, 0.1,
+              null, undefined, "", "aa", {}, [], new Number(16),
+              {toString: function () { return 7; }},
+              {valueOf: function () { return 7; }}];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function () { d.value = vals[i]; }, TypeError);
+
+  do_check_true(d.address().constructor === t.ptr);
+  do_check_eq(d.address().contents, "a");
+  do_check_eq(d.toSource(), "ctypes." + name + "(\"" + d.value + "\")");
+  do_check_eq(d.toSource(), d.toString());
+
+  // Test string autoconversion (and lack thereof).
+  let literal = "autoconverted";
+  let s = t.array()(literal);
+  do_check_eq(s.readString(), literal);
+  do_check_eq(s.constructor.length, literal.length + 1);
+  s = t.array(50)(literal);
+  do_check_eq(s.readString(), literal);
+  do_check_throws(function() { t.array(3)(literal); }, TypeError);
+
+  do_check_throws(function() { t.ptr(literal); }, TypeError);
+  let p = t.ptr(s);
+  do_check_eq(p.readString(), literal);
+
+  // Test the function call ABI for calls involving the type,
+  // and check the alignment of the type against what C says.
+  run_basic_abi_tests(library, t, name, toprimitive,
+    109,
+    [ 0, limits[0], limits[1] ],
+    [ [ 0, 0, 0 ], [ 0, 1, 1 ], [ 1, 0, 1 ], [ 1, 1, 2 ],
+      [ limits[0], 1, limits[0] + 1 ],
+      [ limits[1], 1, limits[0] ] ],
+    [ [ 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0 ],
+      [ 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1,
+        18 ] ]);
+}
+
+// Test the class and prototype hierarchy for a given type constructor 'c'.
+function run_type_ctor_class_tests(c, t, t2, props=[], fns=[], instanceProps=[], instanceFns=[], specialProps=[])
+{
+  do_check_true(c.prototype.__proto__ === ctypes.CType.prototype);
+  do_check_true(c.prototype instanceof ctypes.CType);
+  do_check_true(c.prototype.constructor === c);
+
+  // Check that 'c.prototype' has the correct properties and functions.
+  for (let p of props)
+    do_check_true(c.prototype.hasOwnProperty(p));
+  for (let f of fns)
+    do_check_true(c.prototype.hasOwnProperty(f));
+
+  // Check that the shared properties and functions on 'c.prototype' throw.
+  for (let p of props)
+    do_check_throws(function() { c.prototype[p]; }, TypeError);
+  for (let f of fns)
+    do_check_throws(function() { c.prototype[f](); }, TypeError);
+
+  do_check_true(t.__proto__ === c.prototype);
+  do_check_true(t instanceof c);
+
+  // 't.prototype.__proto__' is the common ancestor of all types constructed
+  // from 'c'; while not available from 'c' directly, it should be identically
+  // equal to 't2.prototype.__proto__' where 't2' is a different CType
+  // constructed from 'c'.
+  do_check_true(t.prototype.__proto__ === t2.prototype.__proto__);
+  if (t instanceof ctypes.FunctionType)
+    do_check_true(t.prototype.__proto__.__proto__ === ctypes.PointerType.prototype.prototype);
+  else
+    do_check_true(t.prototype.__proto__.__proto__ === ctypes.CData.prototype);
+  do_check_true(t.prototype instanceof ctypes.CData);
+  do_check_true(t.prototype.constructor === t);
+
+  // Check that 't.prototype.__proto__' has the correct properties and
+  // functions.
+  for (let p of instanceProps)
+    do_check_true(t.prototype.__proto__.hasOwnProperty(p));
+  for (let f of instanceFns)
+    do_check_true(t.prototype.__proto__.hasOwnProperty(f));
+
+  // Check that the shared properties and functions on 't.prototype.__proto__'
+  // (and thus also 't.prototype') throw.
+  for (let p of instanceProps) {
+    do_check_throws(function() { t.prototype.__proto__[p]; }, TypeError);
+    do_check_throws(function() { t.prototype[p]; }, TypeError);
+  }
+  for (let f of instanceFns) {
+    do_check_throws(function() { t.prototype.__proto__[f]() }, TypeError);
+    do_check_throws(function() { t.prototype[f]() }, TypeError);
+  }
+
+  // Check that 't.prototype' has the correct special properties.
+  for (let p of specialProps)
+    do_check_true(t.prototype.hasOwnProperty(p));
+
+  // Check that the shared special properties on 't.prototype' throw.
+  for (let p of specialProps)
+    do_check_throws(function() { t.prototype[p]; }, TypeError);
+
+  // Make sure we can access 'prototype' on a CTypeProto.
+  if (t instanceof ctypes.FunctionType)
+    do_check_true(Object.getPrototypeOf(c.prototype.prototype) === ctypes.PointerType.prototype.prototype);
+  else
+    do_check_true(Object.getPrototypeOf(c.prototype.prototype) === ctypes.CType.prototype.prototype);
+
+  // Test that an instance 'd' of 't' is a CData.
+  if (t.__proto__ != ctypes.FunctionType.prototype) {
+    let d = t();
+    do_check_true(d.__proto__ === t.prototype);
+    do_check_true(d instanceof t);
+    do_check_true(d.constructor === t);
+  }
+}
+
+function run_StructType_tests() {
+  run_type_ctor_class_tests(ctypes.StructType,
+    ctypes.StructType("s", [{"a": ctypes.int32_t}, {"b": ctypes.int64_t}]),
+    ctypes.StructType("t", [{"c": ctypes.int32_t}, {"d": ctypes.int64_t}]),
+    [ "fields" ], [ "define" ], [], [ "addressOfField" ], [ "a", "b" ]);
+
+  do_check_throws(function() { ctypes.StructType(); }, TypeError);
+  do_check_throws(function() { ctypes.StructType("a", [], 5); }, TypeError);
+  do_check_throws(function() { ctypes.StructType(null, []); }, TypeError);
+  do_check_throws(function() { ctypes.StructType("a", null); }, TypeError);
+
+  // Check that malformed descriptors are an error.
+  do_check_throws(function() {
+    ctypes.StructType("a", [{"x":ctypes.int32_t}, {"x":ctypes.int8_t}]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [5]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [{}]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [{5:ctypes.int32_t}]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [{"5":ctypes.int32_t}]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [{"x":5}]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("a", [{"x":ctypes.int32_t()}]);
+  }, TypeError);
+
+  // Check that opaque structs work.
+  let opaque_t = ctypes.StructType("a");
+  do_check_eq(opaque_t.name, "a");
+  do_check_eq(opaque_t.toString(), "type a");
+  do_check_eq(opaque_t.toSource(), 'ctypes.StructType("a")');
+  do_check_true(opaque_t.prototype === undefined);
+  do_check_true(opaque_t.fields === undefined);
+  do_check_true(opaque_t.size === undefined);
+  do_check_throws(function() { opaque_t(); }, Error);
+  let opaqueptr_t = opaque_t.ptr;
+  do_check_true(opaqueptr_t.targetType === opaque_t);
+  do_check_eq(opaqueptr_t.name, "a*");
+  do_check_eq(opaqueptr_t.toString(), "type a*");
+  do_check_eq(opaqueptr_t.toSource(), 'ctypes.StructType("a").ptr');
+
+  // Check that type checking works with opaque structs.
+  let opaqueptr = opaqueptr_t();
+  opaqueptr.value = opaqueptr_t(1);
+  do_check_eq(ptrValue(opaqueptr), 1);
+  do_check_throws(function() {
+    opaqueptr.value = ctypes.StructType("a").ptr();
+  }, TypeError);
+
+  // Check that 'define' works.
+  do_check_throws(function() { opaque_t.define(); }, TypeError);
+  do_check_throws(function() { opaque_t.define([], 0); }, TypeError);
+  do_check_throws(function() { opaque_t.define([{}]); }, TypeError);
+  do_check_throws(function() { opaque_t.define([{ a: 0 }]); }, TypeError);
+  do_check_throws(function() {
+    opaque_t.define([{ a: ctypes.int32_t, b: ctypes.int64_t }]);
+  }, TypeError);
+  do_check_throws(function() {
+    opaque_t.define([{ a: ctypes.int32_t }, { b: 0 }]);
+  }, TypeError);
+  do_check_false(opaque_t.hasOwnProperty("prototype"));
+
+  // Check that circular references work with opaque structs...
+  // but not crazy ones.
+  do_check_throws(function() { opaque_t.define([{ b: opaque_t }]); }, TypeError);
+  let circular_t = ctypes.StructType("circular", [{ a: opaqueptr_t }]);
+  opaque_t.define([{ b: circular_t }]);
+  let opaque = opaque_t();
+  let circular = circular_t(opaque.address());
+  opaque.b = circular;
+  do_check_eq(circular.a.toSource(), opaque.address().toSource());
+  do_check_eq(opaque.b.toSource(), circular.toSource());
+
+  // Check that attempting to redefine a struct fails and if attempted, the
+  // original definition is preserved.
+  do_check_throws(function() {
+    opaque_t.define([{ c: ctypes.int32_t.array(8) }]);
+  }, Error);
+  do_check_eq(opaque_t.size, circular_t.size);
+  do_check_true(opaque_t.prototype.hasOwnProperty("b"));
+  do_check_false(opaque_t.prototype.hasOwnProperty("c"));
+
+  // StructType size, alignment, and offset calculations have already been
+  // checked for each basic type. We do not need to check them again.
+  let name = "g_t";
+  let g_t = ctypes.StructType(name, [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+  do_check_eq(g_t.name, name);
+
+  do_check_eq(g_t.toString(), "type " + name);
+  do_check_eq(g_t.toSource(),
+    "ctypes.StructType(\"g_t\", [{ \"a\": ctypes.int32_t }, { \"b\": ctypes.double }])");
+  do_check_true(g_t.ptr === ctypes.PointerType(g_t));
+  do_check_eq(g_t.array().name, name + "[]");
+  do_check_eq(g_t.array(5).name, name + "[5]");
+
+  let s_t = new ctypes.StructType("s_t", [{ a: ctypes.int32_t }, { b: g_t }, { c: ctypes.int8_t }]);
+
+  let fields = [{ a: ctypes.int32_t }, { b: ctypes.int8_t }, { c: g_t }, { d: ctypes.int8_t }];
+  let t_t = new ctypes.StructType("t_t", fields);
+  do_check_eq(t_t.fields.length, 4);
+  do_check_true(t_t.fields[0].a === ctypes.int32_t);
+  do_check_true(t_t.fields[1].b === ctypes.int8_t);
+  do_check_true(t_t.fields[2].c === g_t);
+  do_check_true(t_t.fields[3].d === ctypes.int8_t);
+/* disabled temporarily per bug 598225.
+  do_check_throws(function() { t_t.fields.z = 0; }, Error);
+  do_check_throws(function() { t_t.fields[4] = 0; }, Error);
+  do_check_throws(function() { t_t.fields[4].a = 0; }, Error);
+  do_check_throws(function() { t_t.fields[4].e = 0; }, Error);
+*/
+
+  // Check that struct size bounds work, and that large, but not illegal, sizes
+  // are OK.
+  if (ctypes.size_t.size == 4) {
+    // Test 1: overflow struct size + field padding + field size.
+    let large_t = ctypes.StructType("large_t",
+        [{"a": ctypes.int8_t.array(0xffffffff)}]);
+    do_check_eq(large_t.size, 0xffffffff);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": ctypes.int8_t}]);
+    }, RangeError);
+
+    // Test 2: overflow struct size + struct tail padding.
+    // To do this, we use a struct with maximum size and alignment 2.
+    large_t = ctypes.StructType("large_t",
+      [{"a": ctypes.int16_t.array(0xfffffffe / 2)}]);
+    do_check_eq(large_t.size, 0xfffffffe);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": ctypes.int8_t}]);
+    }, RangeError);
+
+  } else {
+    // Test 1: overflow struct size when converting from size_t to jsdouble.
+    let large_t = ctypes.StructType("large_t",
+        [{"a": ctypes.int8_t.array(0xfffffffffffff800)}]);
+    do_check_eq(large_t.size, 0xfffffffffffff800);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": ctypes.int8_t}]);
+    }, RangeError);
+    let small_t = ctypes.int8_t.array(0x400);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": small_t}]);
+    }, RangeError);
+
+    large_t = ctypes.StructType("large_t",
+      [{"a": ctypes.int8_t.array(0x1fffffffffffff)}]);
+    do_check_eq(large_t.size, 0x1fffffffffffff);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t.array(2)}, {"b": ctypes.int8_t}]);
+    }, RangeError);
+
+    // Test 2: overflow struct size + field padding + field size.
+    large_t = ctypes.int8_t.array(0xfffffffffffff800);
+    small_t = ctypes.int8_t.array(0x800);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": small_t}]);
+    }, RangeError);
+
+    // Test 3: overflow struct size + struct tail padding.
+    // To do this, we use a struct with maximum size and alignment 2.
+    large_t = ctypes.StructType("large_t",
+      [{"a": ctypes.int16_t.array(0xfffffffffffff000 / 2)}]);
+    do_check_eq(large_t.size, 0xfffffffffffff000);
+    small_t = ctypes.int8_t.array(0xfff);
+    do_check_throws(function() {
+      ctypes.StructType("large_t", [{"a": large_t}, {"b": small_t}]);
+    }, RangeError);
+  }
+
+  let g = g_t();
+  do_check_eq(g.a, 0);
+  do_check_eq(g.b, 0);
+  g = new g_t(1, 2);
+  do_check_eq(g.a, 1);
+  do_check_eq(g.b, 2);
+  do_check_throws(function() { g_t(1); }, TypeError);
+  do_check_throws(function() { g_t(1, 2, 3); }, TypeError);
+
+  for (let field in g)
+    do_check_true(field == "a" || field == "b");
+
+  let g_a = g.address();
+  do_check_true(g_a.constructor === g_t.ptr);
+  do_check_eq(g_a.contents.a, g.a);
+
+  let s = new s_t(3, g, 10);
+  do_check_eq(s.a, 3);
+  s.a = 4;
+  do_check_eq(s.a, 4);
+  do_check_eq(s.b.a, 1);
+  do_check_eq(s.b.b, 2);
+  do_check_eq(s.c, 10);
+  let g2 = s.b;
+  do_check_eq(g2.a, 1);
+  g2.a = 7;
+  do_check_eq(g2.a, 7);
+  do_check_eq(s.b.a, 7);
+
+  g_a = s.addressOfField("b");
+  do_check_true(g_a.constructor === g_t.ptr);
+  do_check_eq(g_a.contents.a, s.b.a);
+  do_check_throws(function() { s.addressOfField(); }, TypeError);
+  do_check_throws(function() { s.addressOfField("d"); }, TypeError);
+  do_check_throws(function() { s.addressOfField("a", 2); }, TypeError);
+
+  do_check_eq(s.toSource(), "s_t(4, {\"a\": 7, \"b\": 2}, 10)");
+  do_check_eq(s.toSource(), s.toString());
+  eval("var s2 = " + s.toSource());
+  do_check_true(s2.constructor === s_t);
+  do_check_eq(s.b.b, s2.b.b);
+
+  // Test that structs can be set from an object using 'value'.
+  do_check_throws(function() { s.value; }, TypeError);
+  let s_init = { "a": 2, "b": { "a": 9, "b": 5 }, "c": 13 };
+  s.value = s_init;
+  do_check_eq(s.b.a, 9);
+  do_check_eq(s.c, 13);
+  do_check_throws(function() { s.value = 5; }, TypeError);
+  do_check_throws(function() { s.value = ctypes.int32_t(); }, TypeError);
+  do_check_throws(function() { s.value = {}; }, TypeError);
+  do_check_throws(function() { s.value = { "a": 2 }; }, TypeError);
+  do_check_throws(function() { s.value = { "a": 2, "b": 5, "c": 10 }; }, TypeError);
+  do_check_throws(function() {
+    s.value = { "5": 2, "b": { "a": 9, "b": 5 }, "c": 13 };
+  }, TypeError);
+  do_check_throws(function() {
+    s.value = { "a": 2, "b": { "a": 9, "b": 5 }, "c": 13, "d": 17 };
+  }, TypeError);
+  do_check_throws(function() {
+    s.value = { "a": 2, "b": { "a": 9, "b": 5, "e": 9 }, "c": 13 };
+  }, TypeError);
+
+  // Test that structs can be constructed similarly through ExplicitConvert,
+  // and that the single-field case is disambiguated correctly.
+  s = s_t(s_init);
+  do_check_eq(s.b.a, 9);
+  do_check_eq(s.c, 13);
+  let v_t = ctypes.StructType("v_t", [{ "x": ctypes.int32_t }]);
+  let v = v_t({ "x": 5 });
+  do_check_eq(v.x, 5);
+  v = v_t(8);
+  do_check_eq(v.x, 8);
+  let w_t = ctypes.StructType("w_t", [{ "y": v_t }]);
+  do_check_throws(function() { w_t(9); }, TypeError);
+  let w = w_t({ "x": 3 });
+  do_check_eq(w.y.x, 3);
+  w = w_t({ "y": { "x": 19 } });
+  do_check_eq(w.y.x, 19);
+  let u_t = ctypes.StructType("u_t", [{ "z": ctypes.ArrayType(ctypes.int32_t, 3) }]);
+  let u = u_t([1, 2, 3]);
+  do_check_eq(u.z[1], 2);
+  u = u_t({ "z": [4, 5, 6] });
+  do_check_eq(u.z[1], 5);
+
+  // Check that the empty struct has size 1.
+  let z_t = ctypes.StructType("z_t", []);
+  do_check_eq(z_t.size, 1);
+  do_check_eq(z_t.fields.length, 0);
+
+  // Check that structs containing arrays of undefined or zero length
+  // are illegal, but arrays of defined length work.
+  do_check_throws(function() {
+    ctypes.StructType("z_t", [{ a: ctypes.int32_t.array() }]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.StructType("z_t", [{ a: ctypes.int32_t.array(0) }]);
+  }, TypeError);
+  z_t = ctypes.StructType("z_t", [{ a: ctypes.int32_t.array(6) }]);
+  do_check_eq(z_t.size, ctypes.int32_t.size * 6);
+  let z = z_t([1, 2, 3, 4, 5, 6]);
+  do_check_eq(z.a[3], 4);
+}
+
+function ptrValue(p) {
+  return ctypes.cast(p, ctypes.uintptr_t).value.toString();
+}
+
+function run_PointerType_tests() {
+  run_type_ctor_class_tests(ctypes.PointerType,
+    ctypes.PointerType(ctypes.int32_t), ctypes.PointerType(ctypes.int64_t),
+    [ "targetType" ], [], [ "contents" ], [ "isNull", "increment", "decrement" ], []);
+
+  do_check_throws(function() { ctypes.PointerType(); }, TypeError);
+  do_check_throws(function() { ctypes.PointerType(ctypes.int32_t, 5); }, TypeError);
+  do_check_throws(function() { ctypes.PointerType(null); }, TypeError);
+  do_check_throws(function() { ctypes.PointerType(ctypes.int32_t()); }, TypeError);
+  do_check_throws(function() { ctypes.PointerType("void"); }, TypeError);
+
+  let name = "g_t";
+  let g_t = ctypes.StructType(name, [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+  let g = g_t(1, 2);
+
+  let p_t = ctypes.PointerType(g_t);
+  do_check_eq(p_t.name, name + "*");
+  do_check_eq(p_t.size, ctypes.uintptr_t.size);
+  do_check_true(p_t.targetType === g_t);
+  do_check_true(p_t === g_t.ptr);
+
+  do_check_eq(p_t.toString(), "type " + name + "*");
+  do_check_eq(p_t.toSource(),
+    "ctypes.StructType(\"g_t\", [{ \"a\": ctypes.int32_t }, { \"b\": ctypes.double }]).ptr");
+  do_check_true(p_t.ptr === ctypes.PointerType(p_t));
+  do_check_eq(p_t.array().name, name + "*[]");
+  do_check_eq(p_t.array(5).name, name + "*[5]");
+
+  // Test ExplicitConvert.
+  let p = p_t();
+  do_check_throws(function() { p.value; }, TypeError);
+  do_check_eq(ptrValue(p), 0);
+  do_check_throws(function() { p.contents; }, TypeError);
+  do_check_throws(function() { p.contents = g; }, TypeError);
+  p = p_t(5);
+  do_check_eq(ptrValue(p), 5);
+  p = p_t(ctypes.UInt64(10));
+  do_check_eq(ptrValue(p), 10);
+
+  // Test ImplicitConvert.
+  p.value = null;
+  do_check_eq(ptrValue(p), 0);
+  do_check_throws(function() { p.value = 5; }, TypeError);
+
+  // Test opaque pointers.
+  let f_t = ctypes.StructType("FILE").ptr;
+  do_check_eq(f_t.name, "FILE*");
+  do_check_eq(f_t.toSource(), 'ctypes.StructType("FILE").ptr');
+  let f = new f_t();
+  do_check_throws(function() { f.contents; }, TypeError);
+  do_check_throws(function() { f.contents = 0; }, TypeError);
+  f = f_t(5);
+  do_check_throws(function() { f.contents = 0; }, TypeError);
+  do_check_eq(f.toSource(), 'FILE.ptr(ctypes.UInt64("0x5"))');
+
+  do_check_throws(function() { f_t(p); }, TypeError);
+  do_check_throws(function() { f.value = p; }, TypeError);
+  do_check_throws(function() { p.value = f; }, TypeError);
+
+  // Test void pointers.
+  let v_t = ctypes.PointerType(ctypes.void_t);
+  do_check_true(v_t === ctypes.voidptr_t);
+  let v = v_t(p);
+  do_check_eq(ptrValue(v), ptrValue(p));
+
+  // Test 'contents'.
+  let int32_t = ctypes.int32_t(9);
+  p = int32_t.address();
+  do_check_eq(p.contents, int32_t.value);
+  p.contents = ctypes.int32_t(12);
+  do_check_eq(int32_t.value, 12);
+
+  // Test 'isNull'.
+  let n = f_t(0);
+  do_check_true(n.isNull() === true);
+  n = p.address();
+  do_check_true(n.isNull() === false);
+
+  // Test 'increment'/'decrement'.
+  g_t = ctypes.StructType("g_t", [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+  let a_t = ctypes.ArrayType(g_t, 2);
+  let a = new a_t();
+  a[0] = g_t(1, 2);
+  a[1] = g_t(2, 4);
+  let a_p = a.addressOfElement(0).increment();
+  do_check_eq(a_p.contents.a, 2);
+  do_check_eq(a_p.contents.b, 4);
+  a_p = a_p.decrement();
+  do_check_eq(a_p.contents.a, 1);
+  do_check_eq(a_p.contents.b, 2);
+
+  // Check that pointers to arrays of undefined or zero length are legal,
+  // but that the former cannot be dereferenced.
+  let z_t = ctypes.int32_t.array().ptr;
+  do_check_eq(ptrValue(z_t()), 0);
+  do_check_throws(function() { z_t().contents }, TypeError);
+  z_t = ctypes.int32_t.array(0).ptr;
+  do_check_eq(ptrValue(z_t()), 0);
+  let z = ctypes.int32_t.array(0)().address();
+  do_check_eq(z.contents.length, 0);
+
+  // TODO: Somehow, somewhere we should check that:
+  //
+  //  (a) ArrayBuffer and TypedArray can be passed by pointer to a C function
+  //  (b) SharedArrayBuffer and TypedArray on SAB can NOT be passed in that
+  //      way (at least not at the moment).
+
+  // Set up conversion tests on AB, SAB, TA
+  let c_arraybuffer = new ArrayBuffer(256);
+  let typed_array_samples =
+       [
+         [new Int8Array(c_arraybuffer), ctypes.int8_t],
+         [new Uint8Array(c_arraybuffer), ctypes.uint8_t],
+         [new Int16Array(c_arraybuffer), ctypes.int16_t],
+         [new Uint16Array(c_arraybuffer), ctypes.uint16_t],
+         [new Int32Array(c_arraybuffer), ctypes.int32_t],
+         [new Uint32Array(c_arraybuffer), ctypes.uint32_t],
+         [new Float32Array(c_arraybuffer), ctypes.float32_t],
+         [new Float64Array(c_arraybuffer), ctypes.float64_t]
+        ];
+
+  if (typeof SharedArrayBuffer !== "undefined") {
+    let c_shared_arraybuffer = new SharedArrayBuffer(256);
+    typed_array_samples.push([new Int8Array(c_shared_arraybuffer), ctypes.int8_t],
+                             [new Uint8Array(c_shared_arraybuffer), ctypes.uint8_t],
+                             [new Int16Array(c_shared_arraybuffer), ctypes.int16_t],
+                             [new Uint16Array(c_shared_arraybuffer), ctypes.uint16_t],
+                             [new Int32Array(c_shared_arraybuffer), ctypes.int32_t],
+                             [new Uint32Array(c_shared_arraybuffer), ctypes.uint32_t],
+                             [new Float32Array(c_shared_arraybuffer), ctypes.float32_t],
+                             [new Float64Array(c_shared_arraybuffer), ctypes.float64_t])
+  }
+
+  // Check that you can convert (Shared)ArrayBuffer or typed array to a C array
+  for (let i = 0; i < typed_array_samples.length; ++i) {
+    for (let j = 0; j < typed_array_samples.length; ++j) {
+      let view = typed_array_samples[i][0];
+      let item_type = typed_array_samples[j][1];
+      let number_of_items = c_arraybuffer.byteLength / item_type.size;
+      let array_type = item_type.array(number_of_items);
+
+      // Int8Array on unshared memory is interconvertible with Int8Array on
+      // shared memory, etc.
+      if (i % 8 != j % 8) {
+        do_print("Checking that typed array " + (view.constructor.name) +
+                 " can NOT be converted to " + item_type + " array");
+        do_check_throws(function() { array_type(view); }, TypeError);
+      } else {
+        do_print("Checking that typed array " + (view.constructor.name) +
+                 " can be converted to " + item_type + " array");
+
+        // Convert ArrayBuffer to array of the right size and check contents
+        c_array = array_type(c_arraybuffer);
+        for (let k = 0; k < number_of_items; ++k) {
+          do_check_eq(c_array[k], view[k]);
+        }
+
+        // Convert typed array to array of the right size and check contents
+        c_array = array_type(view);
+        for (let k = 0; k < number_of_items; ++k) {
+          do_check_eq(c_array[k], view[k]);
+        }
+
+        // Convert typed array to array of wrong size, ensure that it fails
+        let array_type_too_large = item_type.array(number_of_items + 1);
+        let array_type_too_small = item_type.array(number_of_items - 1);
+
+        do_check_throws(function() { array_type_too_large(c_arraybuffer); }, TypeError);
+        do_check_throws(function() { array_type_too_small(c_arraybuffer); }, TypeError);
+        do_check_throws(function() { array_type_too_large(view); }, TypeError);
+        do_check_throws(function() { array_type_too_small(view); }, TypeError);
+
+        // Convert subarray of typed array to array of right size and check contents
+        c_array = array_type_too_small(view.subarray(1));
+        for (let k = 1; k < number_of_items; ++k) {
+          do_check_eq(c_array[k - 1], view[k]);
+        }
+      }
+    }
+  }
+
+  // Check that you can't use a (Shared)ArrayBuffer or a typed array as a pointer
+  for (let i = 0; i < typed_array_samples.length; ++i) {
+    for (let j = 0; j < typed_array_samples.length; ++j) {
+      let view = typed_array_samples[i][0];
+      let item_type = typed_array_samples[j][1];
+
+      do_print("Checking that typed array " + (view.constructor.name) +
+               " can NOT be converted to " + item_type + " pointer/array");
+      do_check_throws(function() { item_type.ptr(c_arraybuffer); }, TypeError);
+      do_check_throws(function() { item_type.ptr(view); }, TypeError);
+      do_check_throws(function() { ctypes.voidptr_t(c_arraybuffer); }, TypeError);
+      do_check_throws(function() { ctypes.voidptr_t(view); }, TypeError);
+    }
+  }
+}
+
+function run_FunctionType_tests() {
+  run_type_ctor_class_tests(ctypes.FunctionType,
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t),
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, [ ctypes.int32_t ]),
+    [ "abi", "returnType", "argTypes", "isVariadic" ],
+    undefined, undefined, undefined, undefined);
+
+  do_check_throws(function() { ctypes.FunctionType(); }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, [ ctypes.void_t ]);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, [ ctypes.void_t ], 5);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, ctypes.void_t);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, null);
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.int32_t());
+  }, TypeError);
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.void_t, ctypes.void_t);
+  }, Error);
+
+  let g_t = ctypes.StructType("g_t", [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+
+  let f_t = ctypes.FunctionType(ctypes.default_abi, g_t);
+  let name = "g_t()";
+  do_check_eq(f_t.name, name);
+  do_check_eq(f_t.size, undefined);
+  do_check_true(f_t.abi === ctypes.default_abi);
+  do_check_true(f_t.returnType === g_t);
+  do_check_true(f_t.argTypes.length == 0);
+
+  do_check_eq(f_t.toString(), "type " + name);
+  do_check_eq(f_t.toSource(),
+    "ctypes.FunctionType(ctypes.default_abi, g_t)");
+
+  let fp_t = f_t.ptr;
+  name = "g_t(*)()";
+  do_check_eq(fp_t.name, name);
+  do_check_eq(fp_t.size, ctypes.uintptr_t.size);
+
+  do_check_eq(fp_t.toString(), "type " + name);
+  do_check_eq(fp_t.toSource(),
+    "ctypes.FunctionType(ctypes.default_abi, g_t).ptr");
+
+  // Check that constructing a FunctionType CData directly throws.
+  do_check_throws(function() { f_t(); }, TypeError);
+
+  // Test ExplicitConvert.
+  let f = fp_t();
+  do_check_throws(function() { f.value; }, TypeError);
+  do_check_eq(ptrValue(f), 0);
+  f = fp_t(5);
+  do_check_eq(ptrValue(f), 5);
+  f = fp_t(ctypes.UInt64(10));
+  do_check_eq(ptrValue(f), 10);
+
+  // Test ImplicitConvert.
+  f.value = null;
+  do_check_eq(ptrValue(f), 0);
+  do_check_throws(function() { f.value = 5; }, TypeError);
+  do_check_eq(f.toSource(),
+    'ctypes.FunctionType(ctypes.default_abi, g_t).ptr(ctypes.UInt64("0x0"))');
+
+  // Test ImplicitConvert from a function pointer of different type.
+  let f2_t = ctypes.FunctionType(ctypes.default_abi, g_t, [ ctypes.int32_t ]);
+  let f2 = f2_t.ptr();
+  do_check_throws(function() { f.value = f2; }, TypeError);
+  do_check_throws(function() { f2.value = f; }, TypeError);
+
+  // Test that converting to a voidptr_t works.
+  let v = ctypes.voidptr_t(f2);
+  do_check_eq(v.toSource(), 'ctypes.voidptr_t(ctypes.UInt64("0x0"))');
+
+  // Test some more complex names.
+  do_check_eq(fp_t.array().name, "g_t(*[])()");
+  do_check_eq(fp_t.array().ptr.name, "g_t(*(*)[])()");
+
+  let f3_t = ctypes.FunctionType(ctypes.default_abi,
+    ctypes.char.ptr.array().ptr).ptr.ptr.array(8).array();
+  do_check_eq(f3_t.name, "char*(*(**[][8])())[]");
+
+  if ("winLastError" in ctypes) {
+    f3_t = ctypes.FunctionType(ctypes.stdcall_abi,
+                               ctypes.char.ptr.array().ptr).ptr.ptr.array(8).array();
+    do_check_eq(f3_t.name, "char*(*(__stdcall**[][8])())[]");
+    f3_t = ctypes.FunctionType(ctypes.winapi_abi,
+                               ctypes.char.ptr.array().ptr).ptr.ptr.array(8).array();
+    do_check_eq(f3_t.name, "char*(*(WINAPI**[][8])())[]");
+  }
+
+  let f4_t = ctypes.FunctionType(ctypes.default_abi,
+    ctypes.char.ptr.array().ptr, [ ctypes.int32_t, fp_t ]);
+  do_check_true(f4_t.argTypes.length == 2);
+  do_check_true(f4_t.argTypes[0] === ctypes.int32_t);
+  do_check_true(f4_t.argTypes[1] === fp_t);
+/* disabled temporarily per bug 598225.
+  do_check_throws(function() { f4_t.argTypes.z = 0; }, Error);
+  do_check_throws(function() { f4_t.argTypes[0] = 0; }, Error);
+*/
+
+  let t4_t = f4_t.ptr.ptr.array(8).array();
+  do_check_eq(t4_t.name, "char*(*(**[][8])(int32_t, g_t(*)()))[]");
+
+  // Not available in a Worker
+  if ("@mozilla.org/systemprincipal;1" in Components.classes) {
+    var sp = Components.classes["@mozilla.org/systemprincipal;1"].
+               createInstance(Components.interfaces.nsIPrincipal);
+    var s = new Components.utils.Sandbox(sp);
+    s.ctypes = ctypes;
+    s.do_check_eq = do_check_eq;
+    s.do_check_true = do_check_true;
+    Components.utils.evalInSandbox("var f5_t = ctypes.FunctionType(ctypes.default_abi, ctypes.int, [ctypes.int]);", s);
+    Components.utils.evalInSandbox("do_check_eq(f5_t.toSource(), 'ctypes.FunctionType(ctypes.default_abi, ctypes.int, [ctypes.int])');", s);
+    Components.utils.evalInSandbox("do_check_eq(f5_t.name, 'int(int)');", s);
+    Components.utils.evalInSandbox("function f5(aArg) { return 5; };", s);
+    Components.utils.evalInSandbox("var f = f5_t.ptr(f5);", s);
+    Components.utils.evalInSandbox("do_check_true(f(6) == 5);", s);
+  }
+}
+
+function run_ArrayType_tests() {
+  run_type_ctor_class_tests(ctypes.ArrayType,
+    ctypes.ArrayType(ctypes.int32_t, 10), ctypes.ArrayType(ctypes.int64_t),
+    [ "elementType", "length" ], [], [ "length" ], [ "addressOfElement" ]);
+
+  do_check_throws(function() { ctypes.ArrayType(); }, TypeError);
+  do_check_throws(function() { ctypes.ArrayType(null); }, TypeError);
+  do_check_throws(function() { ctypes.ArrayType(ctypes.int32_t, 1, 5); }, TypeError);
+  do_check_throws(function() { ctypes.ArrayType(ctypes.int32_t, -1); }, TypeError);
+
+  let name = "g_t";
+  let g_t = ctypes.StructType(name, [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+  let g = g_t(1, 2);
+
+  let a_t = ctypes.ArrayType(g_t, 10);
+  do_check_eq(a_t.name, name + "[10]");
+  do_check_eq(a_t.length, 10);
+  do_check_eq(a_t.size, g_t.size * 10);
+  do_check_true(a_t.elementType === g_t);
+
+  do_check_eq(a_t.toString(), "type " + name + "[10]");
+  do_check_eq(a_t.toSource(),
+    "ctypes.StructType(\"g_t\", [{ \"a\": ctypes.int32_t }, { \"b\": ctypes.double }]).array(10)");
+  do_check_eq(a_t.array().name, name + "[][10]");
+  do_check_eq(a_t.array(5).name, name + "[5][10]");
+  do_check_throws(function() { ctypes.int32_t.array().array(); }, Error);
+
+  let a = new a_t();
+  do_check_eq(a[0].a, 0);
+  do_check_eq(a[0].b, 0);
+  a[0] = g;
+  do_check_eq(a[0].a, 1);
+  do_check_eq(a[0].b, 2);
+  do_check_throws(function() { a[-1]; }, TypeError);
+  do_check_eq(a[9].a, 0);
+  do_check_throws(function() { a[10]; }, RangeError);
+
+  do_check_eq(a[ctypes.Int64(0)].a, 1);
+  do_check_eq(a[ctypes.UInt64(0)].b, 2);
+
+  let a_p = a.addressOfElement(0);
+  do_check_true(a_p.constructor.targetType === g_t);
+  do_check_true(a_p.constructor === g_t.ptr);
+  do_check_eq(a_p.contents.a, a[0].a);
+  do_check_eq(a_p.contents.b, a[0].b);
+  a_p.contents.a = 5;
+  do_check_eq(a[0].a, 5);
+
+  let a2_t = ctypes.ArrayType(g_t);
+  do_check_eq(a2_t.name, "g_t[]");
+  do_check_eq(a2_t.length, undefined);
+  do_check_eq(a2_t.size, undefined);
+  let a2 = new a2_t(5);
+  do_check_eq(a2.constructor.length, 5);
+  do_check_eq(a2.length, 5);
+  do_check_eq(a2.constructor.size, g_t.size * 5);
+  do_check_throws(function() { new a2_t(); }, TypeError);
+  do_check_throws(function() { ctypes.ArrayType(ctypes.ArrayType(g_t)); }, Error);
+  do_check_throws(function() { ctypes.ArrayType(ctypes.ArrayType(g_t), 5); }, Error);
+
+  let b_t = ctypes.int8_t.array(ctypes.UInt64(0xffff));
+  do_check_eq(b_t.length, 0xffff);
+  b_t = ctypes.int8_t.array(ctypes.Int64(0xffff));
+  do_check_eq(b_t.length, 0xffff);
+
+  // Check that array size bounds work, and that large, but not illegal, sizes
+  // are OK.
+  if (ctypes.size_t.size == 4) {
+    do_check_throws(function() {
+      ctypes.ArrayType(ctypes.int8_t, 0x100000000);
+    }, TypeError);
+    do_check_throws(function() {
+      ctypes.ArrayType(ctypes.int16_t, 0x80000000);
+    }, RangeError);
+
+    let large_t = ctypes.int8_t.array(0x80000000);
+    do_check_throws(function() { large_t.array(2); }, RangeError);
+
+  } else {
+    do_check_throws(function() {
+      ctypes.ArrayType(ctypes.int8_t, ctypes.UInt64("0xffffffffffffffff"));
+    }, TypeError);
+    do_check_throws(function() {
+      ctypes.ArrayType(ctypes.int16_t, ctypes.UInt64("0x8000000000000000"));
+    }, RangeError);
+
+    let large_t = ctypes.int8_t.array(0x8000000000000000);
+    do_check_throws(function() { large_t.array(2); }, RangeError);
+  }
+
+  // Test that arrays ImplicitConvert to pointers.
+  let b = ctypes.int32_t.array(10)();
+  let p = ctypes.int32_t.ptr();
+  p.value = b;
+  do_check_eq(ptrValue(b.addressOfElement(0)), ptrValue(p));
+  p = ctypes.voidptr_t();
+  p.value = b;
+  do_check_eq(ptrValue(b.addressOfElement(0)), ptrValue(p));
+
+  // Test that arrays can be constructed through ImplicitConvert.
+  let c_t = ctypes.int32_t.array(6);
+  let c = c_t();
+  c.value = [1, 2, 3, 4, 5, 6];
+  do_check_eq(c.toSource(), "ctypes.int32_t.array(6)([1, 2, 3, 4, 5, 6])");
+  do_check_eq(c.toSource(), c.toString());
+  eval("var c2 = " + c.toSource());
+  do_check_eq(c2.constructor.name, "int32_t[6]");
+  do_check_eq(c2.length, 6);
+  do_check_eq(c2[3], c[3]);
+
+  c.value = c;
+  do_check_eq(c[3], 4);
+  do_check_throws(function() { c.value; }, TypeError);
+  do_check_throws(function() { c.value = [1, 2, 3, 4, 5]; }, TypeError);
+  do_check_throws(function() { c.value = [1, 2, 3, 4, 5, 6, 7]; }, TypeError);
+  do_check_throws(function() { c.value = [1, 2, 7.4, 4, 5, 6]; }, TypeError);
+  do_check_throws(function() { c.value = []; }, TypeError);
+}
+
+function run_type_toString_tests() {
+  var c = ctypes;
+
+  // Figure out whether we can create functions with ctypes.stdcall_abi and ctypes.winapi_abi.
+  var haveStdCallABI;
+  try {
+      c.FunctionType(c.stdcall_abi, c.int);
+      haveStdCallABI = true;
+  } catch (x) {
+      haveStdCallABI = false;
+  }
+
+  var haveWinAPIABI;
+  try {
+      c.FunctionType(c.winapi_abi, c.int);
+      haveWinAPIABI = true;
+  } catch (x) {
+      haveWinAPIABI = false;
+  }
+
+  do_check_eq(c.char.toString(),        "type char");
+  do_check_eq(c.short.toString(),       "type short");
+  do_check_eq(c.int.toString(),         "type int");
+  do_check_eq(c.long.toString(),        "type long");
+  do_check_eq(c.long_long.toString(),   "type long_long");
+  do_check_eq(c.ssize_t.toString(),     "type ssize_t");
+  do_check_eq(c.int8_t.toString(),      "type int8_t");
+  do_check_eq(c.int16_t.toString(),     "type int16_t");
+  do_check_eq(c.int32_t.toString(),     "type int32_t");
+  do_check_eq(c.int64_t.toString(),     "type int64_t");
+  do_check_eq(c.intptr_t.toString(),    "type intptr_t");
+
+  do_check_eq(c.unsigned_char.toString(),       "type unsigned_char");
+  do_check_eq(c.unsigned_short.toString(),      "type unsigned_short");
+  do_check_eq(c.unsigned_int.toString(),        "type unsigned_int");
+  do_check_eq(c.unsigned_long.toString(),       "type unsigned_long");
+  do_check_eq(c.unsigned_long_long.toString(),  "type unsigned_long_long");
+  do_check_eq(c.size_t.toString(),              "type size_t");
+  do_check_eq(c.uint8_t.toString(),             "type uint8_t");
+  do_check_eq(c.uint16_t.toString(),            "type uint16_t");
+  do_check_eq(c.uint32_t.toString(),            "type uint32_t");
+  do_check_eq(c.uint64_t.toString(),            "type uint64_t");
+  do_check_eq(c.uintptr_t.toString(),           "type uintptr_t");
+
+  do_check_eq(c.float.toString(),               "type float");
+  do_check_eq(c.double.toString(),              "type double");
+  do_check_eq(c.bool.toString(),                "type bool");
+  do_check_eq(c.void_t.toString(),              "type void");
+  do_check_eq(c.voidptr_t.toString(),           "type void*");
+  do_check_eq(c.char16_t.toString(),            "type char16_t");
+
+  var simplestruct = c.StructType("simplestruct", [{"smitty":c.voidptr_t}]);
+  do_check_eq(simplestruct.toString(),          "type simplestruct");
+
+  // One type modifier, int base type.
+  do_check_eq(c.int.ptr.toString(),                                     "type int*");
+  do_check_eq(c.ArrayType(c.int).toString(),                            "type int[]");
+  do_check_eq(c.ArrayType(c.int, 4).toString(),                         "type int[4]");
+  do_check_eq(c.FunctionType(c.default_abi, c.int).toString(),          "type int()");
+  do_check_eq(c.FunctionType(c.default_abi, c.int, [c.bool]).toString(), "type int(bool)");
+  do_check_eq(c.FunctionType(c.default_abi, c.int, [c.bool, c.short]).toString(),
+                                                                        "type int(bool, short)");
+  if (haveStdCallABI)
+     do_check_eq(c.FunctionType(c.stdcall_abi, c.int).toString(),       "type int __stdcall()");
+  if (haveWinAPIABI)
+     do_check_eq(c.FunctionType(c.winapi_abi, c.int).toString(),        "type int WINAPI()");
+
+  // One type modifier, struct base type.
+  do_check_eq(simplestruct.ptr.toString(),                              "type simplestruct*");
+  do_check_eq(c.ArrayType(simplestruct).toString(),                     "type simplestruct[]");
+  do_check_eq(c.ArrayType(simplestruct, 4).toString(),                  "type simplestruct[4]");
+  do_check_eq(c.FunctionType(c.default_abi, simplestruct).toString(),   "type simplestruct()");
+
+  // Two levels of type modifiers, int base type.
+  do_check_eq(c.int.ptr.ptr.toString(),                                 "type int**");
+  do_check_eq(c.ArrayType(c.int.ptr).toString(),                        "type int*[]");
+  do_check_eq(c.FunctionType(c.default_abi, c.int.ptr).toString(),      "type int*()");
+
+  do_check_eq(c.ArrayType(c.int).ptr.toString(),                        "type int(*)[]");
+  do_check_eq(c.ArrayType(c.ArrayType(c.int, 4)).toString(),            "type int[][4]");
+  // Functions can't return arrays.
+
+  do_check_eq(c.FunctionType(c.default_abi, c.int).ptr.toString(),      "type int(*)()");
+  // You can't have an array of functions.
+  // Functions can't return functions.
+
+  // We don't try all the permissible three-deep combinations, but this is fun.
+  do_check_eq(c.FunctionType(c.default_abi, c.FunctionType(c.default_abi, c.int).ptr).toString(),
+                                                                        "type int(*())()");
+}
+
+function run_cast_tests() {
+  // Test casting between basic types.
+  let i = ctypes.int32_t();
+  let j = ctypes.cast(i, ctypes.int16_t);
+  do_check_eq(ptrValue(i.address()), ptrValue(j.address()));
+  do_check_eq(i.value, j.value);
+  let k = ctypes.cast(i, ctypes.uint32_t);
+  do_check_eq(ptrValue(i.address()), ptrValue(k.address()));
+  do_check_eq(i.value, k.value);
+
+  // Test casting to a type of undefined or larger size.
+  do_check_throws(function() { ctypes.cast(i, ctypes.void_t); }, TypeError);
+  do_check_throws(function() { ctypes.cast(i, ctypes.int32_t.array()); }, TypeError);
+  do_check_throws(function() { ctypes.cast(i, ctypes.int64_t); }, TypeError);
+
+  // Test casting between special types.
+  let g_t = ctypes.StructType("g_t", [{ a: ctypes.int32_t }, { b: ctypes.double }]);
+  let a_t = ctypes.ArrayType(g_t, 4);
+  let f_t = ctypes.FunctionType(ctypes.default_abi, ctypes.void_t).ptr;
+
+  let a = a_t();
+  a[0] = { a: 5, b: 7.5 };
+  let g = ctypes.cast(a, g_t);
+  do_check_eq(ptrValue(a.address()), ptrValue(g.address()));
+  do_check_eq(a[0].a, g.a);
+
+  let a2 = ctypes.cast(g, g_t.array(1));
+  do_check_eq(ptrValue(a2.address()), ptrValue(g.address()));
+  do_check_eq(a2[0].a, g.a);
+
+  let p = g.address();
+  let ip = ctypes.cast(p, ctypes.int32_t.ptr);
+  do_check_eq(ptrValue(ip), ptrValue(p));
+  do_check_eq(ptrValue(ip.address()), ptrValue(p.address()));
+  do_check_eq(ip.contents, g.a);
+
+  let f = f_t(0x5);
+  let f2 = ctypes.cast(f, ctypes.voidptr_t);
+  do_check_eq(ptrValue(f2), ptrValue(f));
+  do_check_eq(ptrValue(f2.address()), ptrValue(f.address()));
+}
+
+function run_void_tests(library) {
+  let test_void_t = library.declare("test_void_t_cdecl", ctypes.default_abi, ctypes.void_t);
+  do_check_eq(test_void_t(), undefined);
+
+  // Test that library.declare throws with void function args.
+  do_check_throws(function() {
+    library.declare("test_void_t_cdecl", ctypes.default_abi, ctypes.void_t, ctypes.void_t);
+  }, TypeError);
+
+  if ("winLastError" in ctypes) {
+    test_void_t = library.declare("test_void_t_stdcall", ctypes.stdcall_abi, ctypes.void_t);
+    do_check_eq(test_void_t(), undefined);
+
+    // Check that WINAPI symbol lookup for a regular stdcall function fails on
+    // Win32 (it's all the same on Win64 though).
+    if (ctypes.voidptr_t.size == 4) {
+      do_check_throws(function() {
+        library.declare("test_void_t_stdcall", ctypes.winapi_abi, ctypes.void_t);
+      }, Error);
+    }
+  }
+}
+
+function run_string_tests(library) {
+  let test_ansi_len = library.declare("test_ansi_len", ctypes.default_abi, ctypes.int32_t, ctypes.char.ptr);
+  do_check_eq(test_ansi_len(""), 0);
+  do_check_eq(test_ansi_len("hello world"), 11);
+
+  // don't convert anything else to a string
+  let vals = [true, 0, 1/3, undefined, {}, {toString: function () { return "bad"; }}, []];
+  for (let i = 0; i < vals.length; i++)
+    do_check_throws(function() { test_ansi_len(vals[i]); }, TypeError);
+
+  let test_wide_len = library.declare("test_wide_len", ctypes.default_abi, ctypes.int32_t, ctypes.char16_t.ptr);
+  do_check_eq(test_wide_len("hello world"), 11);
+
+  let test_ansi_ret = library.declare("test_ansi_ret", ctypes.default_abi, ctypes.char.ptr);
+  do_check_eq(test_ansi_ret().readString(), "success");
+
+  let test_wide_ret = library.declare("test_wide_ret", ctypes.default_abi, ctypes.char16_t.ptr);
+  do_check_eq(test_wide_ret().readString(), "success");
+
+  let test_ansi_echo = library.declare("test_ansi_echo", ctypes.default_abi, ctypes.char.ptr, ctypes.char.ptr);
+  // We cannot pass a string literal directly into test_ansi_echo, since the
+  // conversion to ctypes.char.ptr is only valid for the duration of the ffi
+  // call. The escaped pointer that's returned will point to freed memory.
+  let arg = ctypes.char.array()("anybody in there?");
+  do_check_eq(test_ansi_echo(arg).readString(), "anybody in there?");
+  do_check_eq(ptrValue(test_ansi_echo(null)), 0);
+}
+
+function run_readstring_tests(library) {
+  // ASCII decode test, "hello world"
+  let ascii_string = ctypes.unsigned_char.array(12)();
+  ascii_string[0] = 0x68;
+  ascii_string[1] = 0x65;
+  ascii_string[2] = 0x6C;
+  ascii_string[3] = 0x6C;
+  ascii_string[4] = 0x6F;
+  ascii_string[5] = 0x20;
+  ascii_string[6] = 0x77;
+  ascii_string[7] = 0x6F;
+  ascii_string[8] = 0x72;
+  ascii_string[9] = 0x6C;
+  ascii_string[10] = 0x64;
+  ascii_string[11] = 0;
+  do_check_eq("hello world", ascii_string.readStringReplaceMalformed());
+
+  // UTF-8 decode test, "U+AC00 U+B098 U+B2E4"
+  let utf8_string = ctypes.unsigned_char.array(10)();
+  utf8_string[0] = 0xEA;
+  utf8_string[1] = 0xB0;
+  utf8_string[2] = 0x80;
+  utf8_string[3] = 0xEB;
+  utf8_string[4] = 0x82;
+  utf8_string[5] = 0x98;
+  utf8_string[6] = 0xEB;
+  utf8_string[7] = 0x8B;
+  utf8_string[8] = 0xA4;
+  utf8_string[9] = 0x00;
+  let utf8_result = utf8_string.readStringReplaceMalformed();
+  do_check_eq(0xAC00, utf8_result.charCodeAt(0));
+  do_check_eq(0xB098, utf8_result.charCodeAt(1));
+  do_check_eq(0xB2E4, utf8_result.charCodeAt(2));
+
+  // KS5601 decode test, invalid encoded byte should be replaced with U+FFFD
+  let ks5601_string = ctypes.unsigned_char.array(7)();
+  ks5601_string[0] = 0xB0;
+  ks5601_string[1] = 0xA1;
+  ks5601_string[2] = 0xB3;
+  ks5601_string[3] = 0xAA;
+  ks5601_string[4] = 0xB4;
+  ks5601_string[5] = 0xD9;
+  ks5601_string[6] = 0x00;
+  let ks5601_result = ks5601_string.readStringReplaceMalformed();
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(0));
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(1));
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(2));
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(3));
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(4));
+  do_check_eq(0xFFFD, ks5601_result.charCodeAt(5));
+
+  // Mixed decode test, "test" + "U+AC00 U+B098 U+B2E4" + "test"
+  // invalid encoded byte should be replaced with U+FFFD
+  let mixed_string = ctypes.unsigned_char.array(15)();
+  mixed_string[0] = 0x74;
+  mixed_string[1] = 0x65;
+  mixed_string[2] = 0x73;
+  mixed_string[3] = 0x74;
+  mixed_string[4] = 0xB0;
+  mixed_string[5] = 0xA1;
+  mixed_string[6] = 0xB3;
+  mixed_string[7] = 0xAA;
+  mixed_string[8] = 0xB4;
+  mixed_string[9] = 0xD9;
+  mixed_string[10] = 0x74;
+  mixed_string[11] = 0x65;
+  mixed_string[12] = 0x73;
+  mixed_string[13] = 0x74;
+  mixed_string[14] = 0x00;
+  let mixed_result = mixed_string.readStringReplaceMalformed();
+  do_check_eq(0x74,   mixed_result.charCodeAt(0));
+  do_check_eq(0x65,   mixed_result.charCodeAt(1));
+  do_check_eq(0x73,   mixed_result.charCodeAt(2));
+  do_check_eq(0x74,   mixed_result.charCodeAt(3));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(4));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(5));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(6));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(7));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(8));
+  do_check_eq(0xFFFD, mixed_result.charCodeAt(9));
+  do_check_eq(0x74,   mixed_result.charCodeAt(10));
+  do_check_eq(0x65,   mixed_result.charCodeAt(11));
+  do_check_eq(0x73,   mixed_result.charCodeAt(12));
+  do_check_eq(0x74,   mixed_result.charCodeAt(13));
+
+  // Test of all posible invalid encoded sequence
+  let invalid_string = ctypes.unsigned_char.array(27)();
+  invalid_string[0] = 0x80;  // 10000000
+  invalid_string[1] = 0xD0;  // 11000000 01110100
+  invalid_string[2] = 0x74;
+  invalid_string[3] = 0xE0;  // 11100000 01110100
+  invalid_string[4] = 0x74;
+  invalid_string[5] = 0xE0;  // 11100000 10100000 01110100
+  invalid_string[6] = 0xA0;
+  invalid_string[7] = 0x74;
+  invalid_string[8] = 0xE0;  // 11100000 10000000 01110100
+  invalid_string[9] = 0x80;
+  invalid_string[10] = 0x74;
+  invalid_string[11] = 0xF0; // 11110000 01110100
+  invalid_string[12] = 0x74;
+  invalid_string[13] = 0xF0; // 11110000 10010000 01110100
+  invalid_string[14] = 0x90;
+  invalid_string[15] = 0x74;
+  invalid_string[16] = 0xF0; // 11110000 10010000 10000000 01110100
+  invalid_string[17] = 0x90;
+  invalid_string[18] = 0x80;
+  invalid_string[19] = 0x74;
+  invalid_string[20] = 0xF0; // 11110000 10000000 10000000 01110100
+  invalid_string[21] = 0x80;
+  invalid_string[22] = 0x80;
+  invalid_string[23] = 0x74;
+  invalid_string[24] = 0xF0; // 11110000 01110100
+  invalid_string[25] = 0x74;
+  invalid_string[26] = 0x00;
+  let invalid_result = invalid_string.readStringReplaceMalformed();
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(0));  // 10000000
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(1));  // 11000000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(2));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(3));  // 11100000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(4));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(5));  // 11100000 10100000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(6));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(7));  // 11100000 10000000 01110100
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(8));
+  do_check_eq(0x74,   invalid_result.charCodeAt(9));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(10)); // 11110000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(11));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(12)); // 11110000 10010000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(13));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(14)); // 11110000 10010000 10000000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(15));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(16)); // 11110000 10000000 10000000 01110100
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(17));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(18));
+  do_check_eq(0x74,   invalid_result.charCodeAt(19));
+  do_check_eq(0xFFFD, invalid_result.charCodeAt(20)); // 11110000 01110100
+  do_check_eq(0x74,   invalid_result.charCodeAt(21));
+
+  // Test decoding of UTF-8 and CESU-8
+  let utf8_cesu8_string = ctypes.unsigned_char.array(10)();
+  utf8_cesu8_string[0] = 0xF0;  // U+10400 in UTF-8
+  utf8_cesu8_string[1] = 0x90;
+  utf8_cesu8_string[2] = 0x90;
+  utf8_cesu8_string[3] = 0x80;
+  utf8_cesu8_string[4] = 0xED;  // U+10400 in CESU-8
+  utf8_cesu8_string[5] = 0xA0;
+  utf8_cesu8_string[6] = 0x81;
+  utf8_cesu8_string[7] = 0xED;
+  utf8_cesu8_string[8] = 0xB0;
+  utf8_cesu8_string[9] = 0x80;
+  let utf8_cesu8_result = utf8_cesu8_string.readStringReplaceMalformed();
+  do_check_eq(0xD801, utf8_cesu8_result.charCodeAt(0));
+  do_check_eq(0xDC00, utf8_cesu8_result.charCodeAt(1));
+  do_check_eq(0xFFFD, utf8_cesu8_result.charCodeAt(2));
+  do_check_eq(0xFFFD, utf8_cesu8_result.charCodeAt(3));
+}
+
+function run_struct_tests(library) {
+  const point_t = new ctypes.StructType("myPOINT",
+                       [{ x: ctypes.int32_t },
+                        { y: ctypes.int32_t }]);
+  const rect_t = new ctypes.StructType("myRECT",
+                       [{ top   : ctypes.int32_t },
+                        { left  : ctypes.int32_t },
+                        { bottom: ctypes.int32_t },
+                        { right : ctypes.int32_t }]);
+
+  let test_pt_in_rect = library.declare("test_pt_in_rect", ctypes.default_abi, ctypes.int32_t, rect_t, point_t);
+  let rect = new rect_t(10, 5, 5, 10);
+  let pt1 = new point_t(6, 6);
+  do_check_eq(test_pt_in_rect(rect, pt1), 1);
+  let pt2 = new point_t(2, 2);
+  do_check_eq(test_pt_in_rect(rect, pt2), 0);
+
+  const inner_t = new ctypes.StructType("INNER",
+                       [{ i1: ctypes.uint8_t },
+                        { i2: ctypes.int64_t },
+                        { i3: ctypes.uint8_t }]);
+  const nested_t = new ctypes.StructType("NESTED",
+                       [{ n1   : ctypes.int32_t },
+                        { n2   : ctypes.int16_t },
+                        { inner: inner_t },
+                        { n3   : ctypes.int64_t },
+                        { n4   : ctypes.int32_t }]);
+
+  let test_nested_struct = library.declare("test_nested_struct", ctypes.default_abi, ctypes.int32_t, nested_t);
+  let inner = new inner_t(161, 523412, 43);
+  let nested = new nested_t(13155, 1241, inner, 24512115, 1234111);
+  // add up all the numbers and make sure the C function agrees
+  do_check_eq(test_nested_struct(nested), 26284238);
+
+  // test returning a struct by value
+  let test_struct_return = library.declare("test_struct_return", ctypes.default_abi, point_t, rect_t);
+  let ret = test_struct_return(rect);
+  do_check_eq(ret.x, rect.left);
+  do_check_eq(ret.y, rect.top);
+
+  // struct parameter ABI depends on size; test returning a large struct by value
+  test_struct_return = library.declare("test_large_struct_return", ctypes.default_abi, rect_t, rect_t, rect_t);
+  ret = test_struct_return(rect_t(1, 2, 3, 4), rect_t(5, 6, 7, 8));
+  do_check_eq(ret.left, 2);
+  do_check_eq(ret.right, 4);
+  do_check_eq(ret.top, 5);
+  do_check_eq(ret.bottom, 7);
+
+  // ... and tests structs < 8 bytes in size
+  for (let i = 1; i < 8; ++i)
+    run_small_struct_test(library, rect_t, i);
+
+  // test passing a struct by pointer
+  let test_init_pt = library.declare("test_init_pt", ctypes.default_abi, ctypes.void_t, point_t.ptr, ctypes.int32_t, ctypes.int32_t);
+  test_init_pt(pt1.address(), 9, 10);
+  do_check_eq(pt1.x, 9);
+  do_check_eq(pt1.y, 10);
+}
+
+function run_small_struct_test(library, rect_t, bytes)
+{
+  let fields = [];
+  for (let i = 0; i < bytes; ++i) {
+    let field = {};
+    field["f" + i] = ctypes.uint8_t;
+    fields.push(field);
+  }
+  const small_t = new ctypes.StructType("SMALL", fields);
+
+  let test_small_struct_return = library.declare("test_" + bytes + "_byte_struct_return", ctypes.default_abi, small_t, rect_t);
+  let ret = test_small_struct_return(rect_t(1, 7, 13, 45));
+
+  let exp = [1, 7, 13, 45];
+  let j = 0;
+  for (let i = 0; i < bytes; ++i) {
+    do_check_eq(ret["f" + i], exp[j]);
+    if (++j == 4)
+      j = 0;
+  }
+}
+
+function run_function_tests(library)
+{
+  let test_ansi_len = library.declare("test_ansi_len", ctypes.default_abi,
+    ctypes.int32_t, ctypes.char.ptr);
+  let fn_t = ctypes.FunctionType(ctypes.default_abi, ctypes.int32_t,
+    [ ctypes.char.ptr ]).ptr;
+
+  let test_fnptr = library.declare("test_fnptr", ctypes.default_abi, fn_t);
+
+  // Test that the value handed back by test_fnptr matches the function pointer
+  // for test_ansi_len itself.
+  let ptr = test_fnptr();
+  do_check_eq(ptrValue(test_ansi_len), ptrValue(ptr));
+
+  // Test that we can call ptr().
+  do_check_eq(ptr("function pointers rule!"), 23);
+
+  // Test that we can call via call and apply
+  do_check_eq(ptr.call(null, "function pointers rule!"), 23);
+  do_check_eq(ptr.apply(null, ["function pointers rule!"]), 23);
+
+  // Test that we cannot call non-function pointers via call and apply
+  let p_t = ctypes.PointerType(ctypes.int32_t);
+  let p = p_t();
+  do_check_throws(function() { p.call(null, "woo"); }, TypeError);
+  do_check_throws(function() { p.apply(null, ["woo"]); }, TypeError);
+
+  // Test the function pointers still behave as regular pointers
+  do_check_false(ptr.isNull(), "PointerType methods should still be valid");
+
+  // Test that library.declare() returns data of type FunctionType.ptr, and that
+  // it is immutable.
+  do_check_true(test_ansi_len.constructor.targetType.__proto__ ===
+    ctypes.FunctionType.prototype);
+  do_check_eq(test_ansi_len.constructor.toSource(),
+    "ctypes.FunctionType(ctypes.default_abi, ctypes.int32_t, [ctypes.char.ptr]).ptr");
+/* disabled temporarily per bug 598225.
+  do_check_throws(function() { test_ansi_len.value = null; }, Error);
+  do_check_eq(ptrValue(test_ansi_len), ptrValue(ptr));
+*/
+
+  // Test that the library.declare(name, functionType) form works.
+  let test_ansi_len_2 = library.declare("test_ansi_len", fn_t);
+  do_check_true(test_ansi_len_2.constructor === fn_t);
+  do_check_eq(ptrValue(test_ansi_len), ptrValue(test_ansi_len_2));
+/* disabled temporarily per bug 598225.
+  do_check_throws(function() { test_ansi_len_2.value = null; }, Error);
+  do_check_eq(ptrValue(test_ansi_len_2), ptrValue(ptr));
+*/
+}
+
+function run_closure_tests(library)
+{
+  run_single_closure_tests(library, ctypes.default_abi, "cdecl");
+  if ("winLastError" in ctypes) {
+    run_single_closure_tests(library, ctypes.stdcall_abi, "stdcall");
+
+    // Check that attempting to construct a ctypes.winapi_abi closure throws.
+    function closure_fn()
+    {
+      return 1;
+    }
+    let fn_t = ctypes.FunctionType(ctypes.winapi_abi, ctypes.int32_t, []).ptr;
+    do_check_throws(function() { fn_t(closure_fn) }, Error);
+  }
+}
+
+function run_single_closure_tests(library, abi, suffix)
+{
+  let b = 23;
+
+  function closure_fn(i)
+  {
+    if (i == 42)
+      throw "7.5 million years for that?";
+    return "a" in this ? i + this.a : i + b;
+  }
+
+  do_check_eq(closure_fn(7), 7 + b);
+  let thisobj = { a: 5 };
+  do_check_eq(closure_fn.call(thisobj, 7), 7 + thisobj.a);
+
+  // Construct a closure, and call it ourselves.
+  let fn_t = ctypes.FunctionType(abi, ctypes.int32_t, [ ctypes.int8_t ]).ptr;
+  let closure = fn_t(closure_fn);
+  do_check_eq(closure(-17), -17 + b);
+
+  // Have C code call it.
+  let test_closure = library.declare("test_closure_" + suffix,
+    ctypes.default_abi, ctypes.int32_t, ctypes.int8_t, fn_t);
+  do_check_eq(test_closure(-52, closure), -52 + b);
+
+  // Do the same, but specify 'this'.
+  let closure2 = fn_t(closure_fn, thisobj);
+  do_check_eq(closure2(-17), -17 + thisobj.a);
+  do_check_eq(test_closure(-52, closure2), -52 + thisobj.a);
+
+  // Specify an error sentinel, and have the JS code throw (see bug 599791).
+  let closure3 = fn_t(closure_fn, null, 54);
+  do_check_eq(closure3(42), 54);
+  do_check_eq(test_closure(42, closure3), 54);
+
+  // Check what happens when the return type is bigger than a word.
+  var fn_64_t = ctypes.FunctionType(ctypes.default_abi, ctypes.uint64_t, [ctypes.bool]).ptr;
+  var bignum1 = ctypes.UInt64.join(0xDEADBEEF, 0xBADF00D);
+  var bignum2 = ctypes.UInt64.join(0xDEFEC8ED, 0xD15EA5E);
+  function closure_fn_64(fail)
+  {
+    if (fail)
+      throw "Just following orders, sir!";
+    return bignum1;
+  }
+  var closure64 = fn_64_t(closure_fn_64, null, bignum2);
+  do_check_eq(ctypes.UInt64.compare(closure64(false), bignum1), 0);
+  do_check_eq(ctypes.UInt64.compare(closure64(true), bignum2), 0);
+
+  // Test a callback that returns void (see bug 682504).
+  var fn_v_t = ctypes.FunctionType(ctypes.default_abi, ctypes.void_t, []).ptr;
+  fn_v_t(function() {})(); // Don't crash
+
+  // Code evaluated in a sandbox uses (and pushes) a separate JSContext.
+  // Make sure that we don't run into an assertion caused by a cx stack
+  // mismatch with the cx stashed in the closure.
+  try {
+    var sb = Components.utils.Sandbox("http://www.example.com");
+    sb.fn = fn_v_t(function() { sb.foo = {}; });
+    Components.utils.evalInSandbox("fn();", sb);
+  } catch (e) {} // Components not available in workers.
+
+  // Make sure that a void callback can't return an error sentinel.
+  var sentinelThrew = false;
+  try {
+  fn_v_t(function() {}, null, -1);
+  } catch (e) {
+    sentinelThrew = true;
+  }
+  do_check_true(sentinelThrew);
+}
+
+function run_variadic_tests(library) {
+  let sum_va_type = ctypes.FunctionType(ctypes.default_abi,
+                                        ctypes.int32_t,
+                                        [ctypes.uint8_t, "..."]).ptr,
+      sum_va = library.declare("test_sum_va_cdecl", ctypes.default_abi, ctypes.int32_t,
+                               ctypes.uint8_t, "...");
+
+  do_check_eq(sum_va_type.toSource(),
+    'ctypes.FunctionType(ctypes.default_abi, ctypes.int32_t, [ctypes.uint8_t, "..."]).ptr');
+  do_check_eq(sum_va.constructor.name, "int32_t(*)(uint8_t, ...)");
+  do_check_true(sum_va.constructor.targetType.isVariadic);
+
+  do_check_eq(sum_va(3,
+                     ctypes.int32_t(1),
+                     ctypes.int32_t(2),
+                     ctypes.int32_t(3)),
+              6);
+
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.bool,
+                        [ctypes.bool, "...", ctypes.bool]);
+  }, Error);
+
+  do_check_throws(function() {
+    ctypes.FunctionType(ctypes.default_abi, ctypes.bool, ["..."]);
+  }, Error);
+
+  if ("winLastError" in ctypes) {
+    do_check_throws(function() {
+      ctypes.FunctionType(ctypes.stdcall_abi, ctypes.bool,
+                          [ctypes.bool, "..."]);
+    }, Error);
+    do_check_throws(function() {
+      ctypes.FunctionType(ctypes.winapi_abi, ctypes.bool,
+                          [ctypes.bool, "..."]);
+    }, Error);
+  }
+
+  do_check_throws(function() {
+    // No variadic closure callbacks allowed.
+    sum_va_type(function() {});
+  }, Error);
+
+  let count_true_va = library.declare("test_sum_va_cdecl", ctypes.default_abi, ctypes.uint8_t,
+                                      ctypes.uint8_t, "...");
+  do_check_eq(count_true_va(8,
+                            ctypes.bool(false),
+                            ctypes.bool(false),
+                            ctypes.bool(false),
+                            ctypes.bool(true),
+                            ctypes.bool(true),
+                            ctypes.bool(false),
+                            ctypes.bool(true),
+                            ctypes.bool(true)),
+              4);
+
+  let add_char_short_int_va = library.declare("test_add_char_short_int_va_cdecl",
+                                              ctypes.default_abi, ctypes.void_t,
+                                              ctypes.uint32_t.ptr, "..."),
+      result = ctypes.uint32_t(3);
+
+  add_char_short_int_va(result.address(),
+                        ctypes.char(5),
+                        ctypes.short(7),
+                        ctypes.uint32_t(11));
+
+  do_check_eq(result.value, 3 + 5 + 7 + 11);
+
+  result = ctypes.int32_t.array(3)([1, 1, 1]),
+      v1 = ctypes.int32_t.array(4)([1, 2, 3, 5]),
+      v2 = ctypes.int32_t.array(3)([7, 11, 13]),
+      vector_add_va = library.declare("test_vector_add_va_cdecl",
+                                      ctypes.default_abi, ctypes.int32_t.ptr,
+                                      ctypes.uint8_t, ctypes.uint8_t, "..."),
+      // Note that vector_add_va zeroes out result first.
+      vec_sum = vector_add_va(2, 3, result, v1, v2);
+  do_check_eq(vec_sum.contents, 8);
+  do_check_eq(result[0], 8);
+  do_check_eq(result[1], 13);
+  do_check_eq(result[2], 16);
+
+  do_check_true(!!(sum_va_type().value = sum_va_type()));
+  let sum_notva_type = ctypes.FunctionType(sum_va_type.targetType.abi,
+                                           sum_va_type.targetType.returnType,
+                                           [ctypes.uint8_t]).ptr;
+  do_check_throws(function() {
+    sum_va_type().value = sum_notva_type();
+  }, TypeError);
+}
+
+function run_static_data_tests(library)
+{
+  const rect_t = new ctypes.StructType("myRECT",
+                       [{ top   : ctypes.int32_t },
+                        { left  : ctypes.int32_t },
+                        { bottom: ctypes.int32_t },
+                        { right : ctypes.int32_t }]);
+
+  let data_rect = library.declare("data_rect", rect_t);
+
+  // Test reading static data.
+  do_check_true(data_rect.constructor === rect_t);
+  do_check_eq(data_rect.top, -1);
+  do_check_eq(data_rect.left, -2);
+  do_check_eq(data_rect.bottom, 3);
+  do_check_eq(data_rect.right, 4);
+
+  // Test writing.
+  data_rect.top = 9;
+  data_rect.left = 8;
+  data_rect.bottom = -11;
+  data_rect.right = -12;
+  do_check_eq(data_rect.top, 9);
+  do_check_eq(data_rect.left, 8);
+  do_check_eq(data_rect.bottom, -11);
+  do_check_eq(data_rect.right, -12);
+
+  // Make sure it's been written, not copied.
+  let data_rect_2 = library.declare("data_rect", rect_t);
+  do_check_eq(data_rect_2.top, 9);
+  do_check_eq(data_rect_2.left, 8);
+  do_check_eq(data_rect_2.bottom, -11);
+  do_check_eq(data_rect_2.right, -12);
+  do_check_eq(ptrValue(data_rect.address()), ptrValue(data_rect_2.address()));
+}
+
+function run_cpp_class_tests(library)
+{
+  // try the gcc mangling, unless we're using MSVC.
+  let OS = get_os();
+  let ctor_symbol;
+  let add_symbol;
+  let abi;
+  if (OS == "WINNT") {
+    // for compatibility for Win32 vs Win64
+    abi = ctypes.thiscall_abi;
+    if (ctypes.size_t.size == 8) {
+      ctor_symbol = '??0TestClass@@QEAA@H@Z';
+      add_symbol = '?Add@TestClass@@QEAAHH@Z';
+    } else {
+      ctor_symbol = '??0TestClass@@QAE@H@Z';
+      add_symbol = '?Add@TestClass@@QAEHH@Z';
+    }
+  } else {
+    abi = ctypes.default_abi;
+    ctor_symbol = "_ZN9TestClassC1Ei";
+    add_symbol = "_ZN9TestClass3AddEi";
+  }
+
+  let test_class_ctor = library.declare(ctor_symbol, abi, ctypes.void_t,
+                                        ctypes.int32_t.ptr, ctypes.int32_t);
+  let i = ctypes.int32_t();
+  test_class_ctor(i.address(), 8);
+  do_check_eq(i.value, 8);
+
+  let test_class_add = library.declare(add_symbol, abi, ctypes.int32_t,
+                                       ctypes.int32_t.ptr, ctypes.int32_t);
+  let j = test_class_add(i.address(), 5);
+  do_check_eq(j, 13);
+  do_check_eq(i.value, 13);
+}
+
+// bug 522360 - try loading system library without full path
+function run_load_system_library()
+{
+  let syslib;
+  let OS = get_os();
+  if (OS == "WINNT") {
+    syslib = ctypes.open("user32.dll");
+  } else if (OS == "Darwin") {
+    syslib = ctypes.open("libm.dylib");
+  } else if (OS == "Linux" || OS == "Android" || OS.match(/BSD$/)) {
+    try {
+      syslib = ctypes.open("libm.so");
+    } catch (e) {
+      // limb.so wasn't available, try libm.so.6 instead
+      syslib = ctypes.open("libm.so.6");
+    }
+  } else {
+    do_throw("please add a system library for this test");
+  }
+  syslib.close();
+  return true;
+}
diff --git a/toolkit/components/ctypes/tests/unit/xpcshell.ini b/toolkit/components/ctypes/tests/unit/xpcshell.ini
new file mode 100644
index 000000000..8920d4f9b
--- /dev/null
+++ b/toolkit/components/ctypes/tests/unit/xpcshell.ini
@@ -0,0 +1,13 @@
+[DEFAULT]
+head = head.js
+tail =
+skip-if = toolkit == 'android'
+
+[test_errno.js]
+
+[test_finalizer.js]
+[test_finalizer_shouldfail.js]
+[test_finalizer_shouldaccept.js]
+[test_jsctypes.js]
+# Bug 676989: test fails consistently on Android
+fail-if = os == "android"
-- 
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