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58 lines
1.4 KiB
58 lines
1.4 KiB
// RUN: %clangxx_asan -O0 %s -pthread -o %t -mllvm -asan-detect-invalid-pointer-pair
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// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 %run %t a 2>&1 | FileCheck %s -check-prefix=OK -allow-empty
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// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 not %run %t b 2>&1 | FileCheck %s -check-prefix=B
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// pthread barriers are not available on OS X
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// UNSUPPORTED: darwin
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#include <assert.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <unistd.h>
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char *pointers[2];
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pthread_barrier_t bar;
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void *thread_main(void *n) {
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char local;
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unsigned long id = (unsigned long)n;
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pointers[id] = &local;
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pthread_barrier_wait(&bar);
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pthread_barrier_wait(&bar);
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return NULL;
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}
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int main(int argc, char **argv) {
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assert(argc >= 2);
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char t = argv[1][0];
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pthread_t threads[2];
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pthread_barrier_init(&bar, NULL, 3);
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pthread_create(&threads[0], 0, thread_main, (void *)0);
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pthread_create(&threads[1], 0, thread_main, (void *)1);
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pthread_barrier_wait(&bar);
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if (t == 'a') {
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// OK-NOT: not handled yet
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unsigned r = pointers[0] - pointers[1];
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} else {
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char local;
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char *parent_pointer = &local;
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// B: ERROR: AddressSanitizer: invalid-pointer-pair
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// B: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-threads.cpp:[[@LINE+1]]
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unsigned r = parent_pointer - pointers[0];
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}
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pthread_barrier_wait(&bar);
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pthread_join(threads[0], 0);
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pthread_join(threads[1], 0);
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pthread_barrier_destroy(&bar);
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return 0;
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}
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