58 lines · cpp
1// RUN: %clangxx_asan -O0 %s -pthread -o %t -mllvm -asan-detect-invalid-pointer-pair2 3// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 %run %t a 2>&1 | FileCheck %s -check-prefix=OK -allow-empty4// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2 not %run %t b 2>&1 | FileCheck %s -check-prefix=B5 6// pthread barriers are not available on OS X7// UNSUPPORTED: darwin8 9#include <assert.h>10#include <pthread.h>11#include <stdlib.h>12#include <unistd.h>13 14char *pointers[2];15pthread_barrier_t bar;16 17void *thread_main(void *n) {18 char local;19 20 unsigned long id = (unsigned long)n;21 pointers[id] = &local;22 pthread_barrier_wait(&bar);23 pthread_barrier_wait(&bar);24 25 return NULL;26}27 28int main(int argc, char **argv) {29 assert(argc >= 2);30 31 char t = argv[1][0];32 33 pthread_t threads[2];34 pthread_barrier_init(&bar, NULL, 3);35 pthread_create(&threads[0], 0, thread_main, (void *)0);36 pthread_create(&threads[1], 0, thread_main, (void *)1);37 pthread_barrier_wait(&bar);38 39 if (t == 'a') {40 // OK-NOT: not handled yet41 unsigned r = pointers[0] - pointers[1];42 } else {43 char local;44 char *parent_pointer = &local;45 46 // B: ERROR: AddressSanitizer: invalid-pointer-pair47 // B: #{{[0-9]+ .*}} in main {{.*}}invalid-pointer-pairs-threads.cpp:[[@LINE+1]]48 unsigned r = parent_pointer - pointers[0];49 }50 51 pthread_barrier_wait(&bar);52 pthread_join(threads[0], 0);53 pthread_join(threads[1], 0);54 pthread_barrier_destroy(&bar);55 56 return 0;57}58