66c60d9d71
This changes add_custom_libcxx to also build libcxxabi and merges the two into a static and hermetic library. There are multiple advantages: 1) The resulting libFuzzer doesn't expose C++ internals and looks like a plain C library. 2) We don't have to manually link in libstdc++ to provide cxxabi. 3) The sanitizer tests cannot interfere with an installed version of libc++.so in LD_LIBRARY_PATH. Differential Revision: https://reviews.llvm.org/D58013 llvm-svn: 354212
43 lines
792 B
C++
43 lines
792 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
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#include <pthread.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sched.h>
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struct Cache {
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int x;
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explicit Cache(int x)
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: x(x) {
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}
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};
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void *AsyncInit(void *p) {
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return new Cache((int)(long)p);
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}
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Cache *CreateCache() {
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pthread_t t;
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pthread_create(&t, 0, AsyncInit, (void*)(long)rand());
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void *res;
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pthread_join(t, &res);
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return (Cache*)res;
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}
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void *Thread1(void *x) {
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static Cache *c = CreateCache();
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if (c->x >= RAND_MAX)
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exit(1);
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return 0;
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}
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int main() {
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pthread_t t[2];
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pthread_create(&t[0], 0, Thread1, 0);
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pthread_create(&t[1], 0, Thread1, 0);
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pthread_join(t[0], 0);
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pthread_join(t[1], 0);
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fprintf(stderr, "PASS\n");
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}
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// CHECK-NOT: WARNING: ThreadSanitizer: data race
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