ca50840b5b
While investigating another issue, I noticed that `MaybeReexec()` never actually "re-executes via `execv()`" anymore. `DyldNeedsEnvVariable()` only returned true on macOS 10.10 and below. Usually, I try to avoid "unnecessary" cleanups (it's hard to be certain that there truly is no fallout), but I decided to do this one because: * I initially tricked myself into thinking that `MaybeReexec()` was relevant to my original investigation (instead of being dead code). * The deleted code itself is quite complicated. * Over time a few other things were mushed into `MaybeReexec()`: initializing `MonotonicNanoTime()`, verifying interceptors are working, and stripping the `DYLD_INSERT_LIBRARIES` env var to avoid problems when forking. * This platform-specific thing leaked into `sanitizer_common.h`. * The `ReexecDisabled()` config nob relies on the "strong overrides weak pattern", which is now problematic and can be completely removed. * `ReexecDisabled()` actually hid another issue with interceptors not working in unit tests. I added an explicit `verify_interceptors` (defaults to `true`) option instead. Differential Revision: https://reviews.llvm.org/D129157
60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
//===-- tsan_test.cpp -----------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "tsan_interface.h"
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#include "tsan_test_util.h"
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#include "gtest/gtest.h"
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static void foo() {}
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static void bar() {}
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TEST_F(ThreadSanitizer, FuncCall) {
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ScopedThread t1, t2;
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MemLoc l;
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t1.Write1(l);
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t2.Call(foo);
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t2.Call(bar);
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t2.Write1(l, true);
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t2.Return();
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t2.Return();
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}
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// We use this function instead of main, as ISO C++ forbids taking the address
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// of main, which we need to pass inside __tsan_func_entry.
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int run_tests(int argc, char **argv) {
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TestMutexBeforeInit(); // Mutexes must be usable before __tsan_init();
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__tsan_init();
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__tsan_func_entry(__builtin_return_address(0));
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__tsan_func_entry((void*)((intptr_t)&run_tests + 1));
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testing::GTEST_FLAG(death_test_style) = "threadsafe";
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testing::InitGoogleTest(&argc, argv);
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int res = RUN_ALL_TESTS();
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__tsan_func_exit();
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__tsan_func_exit();
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return res;
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}
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const char *argv0;
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#ifdef __APPLE__
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// On Darwin, turns off symbolication and crash logs to make tests faster.
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extern "C" const char* __tsan_default_options() {
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return "symbolize=false:abort_on_error=0";
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}
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#endif
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int main(int argc, char **argv) {
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argv0 = argv[0];
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return run_tests(argc, argv);
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}
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