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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /security/nss/lib/util/verref.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'security/nss/lib/util/verref.h')
-rw-r--r--security/nss/lib/util/verref.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/security/nss/lib/util/verref.h b/security/nss/lib/util/verref.h
new file mode 100644
index 000000000..efbcb031c
--- /dev/null
+++ b/security/nss/lib/util/verref.h
@@ -0,0 +1,43 @@
+/* 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 header is used inline in a function to ensure that a version string
+ * symbol is linked in and not optimized out. A volatile reference is added to
+ * the variable identified by NSS_VERSION_VARIABLE.
+ *
+ * Use this as follows:
+ *
+ * #define NSS_VERSION_VARIABLE __nss_ssl_version
+ * #include "verref.h"
+ */
+
+/* Suppress unused variable warnings. */
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable : 4101)
+#endif
+/* This works for both gcc and clang */
+#if defined(__GNUC__) && !defined(NSS_NO_GCC48)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wunused-variable"
+#endif
+
+#ifndef NSS_VERSION_VARIABLE
+#error NSS_VERSION_VARIABLE must be set before including "verref.h"
+#endif
+{
+ extern const char NSS_VERSION_VARIABLE[];
+#if defined(__GNUC__)
+ __attribute__((unused))
+#endif
+ volatile const char _nss_version_c = NSS_VERSION_VARIABLE[0];
+}
+#undef NSS_VERSION_VARIABLE
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif
+#if defined(__GNUC__) && !defined(NSS_NO_GCC48)
+#pragma GCC diagnostic pop
+#endif