Add m-esr52 at 52.6.0

1 files changed, 153 insertions, 0 deletions

diff --git a/js/src/tests/js1_5/extensions/regress-226507.js b/js/src/tests/js1_5/extensions/regress-226507.js
new file mode 100644
index 000000000..8d4fc0dd7
--- /dev/null
+++ b/js/src/tests/js1_5/extensions/regress-226507.js
@@ -0,0 +1,153 @@
+/* -*- 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/. */
+
+/*
+ *
+ * Date:    24 Nov 2003
+ * SUMMARY: Testing for recursion check in js_EmitTree
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=226507
+ * Igor's comments:
+ *
+ * "For example, with N in the test  set to 35, I got on my RedHat
+ * Linux 10 box a segmentation fault from js after setting the stack limit
+ * to 100K. When I set the stack limit to 20K I still got the segmentation fault.
+ * Only after -s was changed to 15K, too-deep recursion was detected:
+ *
+
+ ~/w/js/x> ulimit -s
+ 100
+ ~/w/js/x> js  fintest.js
+ Segmentation fault
+ ~/w/js/x> js -S $((20*1024)) fintest.js
+ Segmentation fault
+ ~/w/js/x> js -S $((15*1024)) fintest.js
+ fintest.js:19: InternalError: too much recursion
+
+ *
+ * After playing with numbers it seems that while processing try/finally the
+ * recursion in js_Emit takes 10 times more space the corresponding recursion
+ * in the parser."
+ *
+ *
+ * Note the use of the new -S option to the JS shell to limit stack size.
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=225061. This in turn
+ * can be passed to the JS shell by the test driver's -o option, as in:
+ *
+ * perl jsDriver.pl -e smdebug -fTEST.html -o "-S 100" -l js1_5/Regress
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 226507;
+var summary = 'Testing for recursion check in js_EmitTree';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * With stack limit 100K on Linux debug build even N=30 already can cause
+ * stack overflow; use 35 to trigger it for sure.
+ */
+var N = 350;
+
+var counter = 0;
+function f()
+{
+  ++counter;
+}
+
+
+/*
+ * Example: if N were 3, this is what |source|
+ * would end up looking like:
+ *
+ *     try { f(); } finally {
+ *     try { f(); } finally {
+ *     try { f(); } finally {
+ *     f(1,1,1,1);
+ *     }}}
+ *
+ */
+var source = "".concat(
+  repeat_str("try { f(); } finally {\n", N),
+  "f(",
+  repeat_str("1,", N),
+  "1);\n",
+  repeat_str("}", N));
+
+// Repeat it for additional stress testing
+source += source;
+
+/*
+ * In Rhino, eval() always uses interpreted mode.
+ * To use compiled mode, use Script.exec() instead.
+ */
+if (typeof Script == 'undefined')
+{
+  print('Test skipped. Script not defined.');
+  expect = actual = 0;
+}
+else
+{
+  try
+  {
+    var script = Script(source);
+    script();
+
+
+    status = inSection(1);
+    actual = counter;
+    expect = (N + 1) * 2;
+  }
+  catch(ex)
+  {
+    actual = ex + '';
+  }
+}
+addThis();
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function repeat_str(str, repeat_count)
+{
+  var arr = new Array(--repeat_count);
+  while (repeat_count != 0)
+    arr[--repeat_count] = str;
+  return str.concat.apply(str, arr);
+}
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  enterFunc('test');
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+
+  exitFunc ('test');
+}