verref.h - mozsearch

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/* 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__) || defined(__clang__)

    __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