4c80867ecf
On OS X 10.11+, we have "automatic interceptors", so we don't need to use DYLD_INSERT_LIBRARIES when launching instrumented programs. However, non-instrumented programs that load TSan late (e.g. via dlopen) are currently broken, as TSan will still try to initialize, but the program will crash/hang at random places (because the interceptors don't work). This patch adds an explicit check that interceptors are working, and if not, it aborts and prints out an error message suggesting to explicitly use DYLD_INSERT_LIBRARIES. TSan unit tests run with a statically linked runtime, where interceptors don't work. To avoid aborting the process in this case, the patch replaces `DisableReexec()` with a weak `ReexecDisabled()` function which is defined to return true in unit tests. Differential Revision: http://reviews.llvm.org/D18212 llvm-svn: 263695
67 lines
1.7 KiB
C++
67 lines
1.7 KiB
C++
//===-- tsan_test.cc ------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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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(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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namespace __sanitizer {
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bool ReexecDisabled() {
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return true;
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}
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}
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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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