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/*
SPDX-FileCopyrightText: 2022 Milian Wolff <mail@milianw.de>
SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "sanitizer_test_init.h"
#include <QString>
#include <QtGlobal>
#if defined(Q_OS_UNIX)
#include <unistd.h>
#endif
namespace KDevelop
{
namespace
{
#if defined(Q_OS_UNIX)
/**
* LLVM and ASAN don't play well together, see [1].
* We have to disable sigaltstack or we crash.
* The code below detects whether we need to disable this option.
* If yes, we change the environment and re-execute ourselves with the new
* environment. Sadly, it doesn't seem to work to use __asan_default_options
* for this purpose here...
*
* [1]: https://github.com/google/sanitizers/issues/849
*/
[[maybe_unused]] void setupAsan(char** argv)
{
auto asanOptions = qEnvironmentVariable("ASAN_OPTIONS");
if (asanOptions.contains(QLatin1String("use_sigaltstack"))) {
return; // nothing to do
}
asanOptions += QLatin1String(",use_sigaltstack=0");
qputenv("ASAN_OPTIONS", asanOptions.toUtf8());
execv(argv[0], argv);
}
#endif
}
void sanitizerTestInit([[maybe_unused]] char** argv)
{
#if defined(Q_OS_UNIX)
// gcc
#if defined(__SANITIZE_ADDRESS__)
setupAsan(argv);
return;
#endif
// clang
#if defined(__has_feature)
#if __has_feature(address_sanitizer)
setupAsan(argv);
return;
#endif
#endif
#endif
}
}
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