1 // RUN: %clangxx_tsan -O0 %s -o %t 2 // RUN: env %env_tsan_opts=stack_trace_format=DEFAULT %deflake %run %t 2>&1 | FileCheck %s 3 4 #include "test.h" 5 #include <pthread.h> 6 #include <stdint.h> 7 #include <stdio.h> 8 #include <stdlib.h> 9 10 #ifndef __APPLE__ 11 #include <sys/types.h> 12 #endif 13 14 extern "C" int __tsan_get_alloc_stack(void *addr, void **trace, size_t size, 15 int *thread_id, uint64_t *os_id); 16 17 char *mem; 18 void alloc_func() { mem = (char *)malloc(10); } 19 20 void *AllocThread(void *context) { 21 uint64_t tid; 22 #ifdef __APPLE__ 23 pthread_threadid_np(NULL, &tid); 24 #else 25 tid = gettid(); 26 #endif 27 fprintf(stderr, "alloc stack thread os id = 0x%llx\n", tid); 28 // CHECK: alloc stack thread os id = [[THREAD_OS_ID:0x[0-9a-f]+]] 29 alloc_func(); 30 return NULL; 31 } 32 33 void *RaceThread(void *context) { 34 *mem = 'a'; 35 barrier_wait(&barrier); 36 return NULL; 37 } 38 39 int main() { 40 pthread_t t; 41 barrier_init(&barrier, 2); 42 43 pthread_create(&t, NULL, AllocThread, NULL); 44 pthread_join(t, NULL); 45 46 void *trace[100]; 47 size_t num_frames = 100; 48 int thread_id; 49 uint64_t thread_os_id; 50 num_frames = 51 __tsan_get_alloc_stack(mem, trace, num_frames, &thread_id, &thread_os_id); 52 53 fprintf(stderr, "alloc stack retval %s\n", 54 (num_frames > 0 && num_frames < 10) ? "ok" : ""); 55 // CHECK: alloc stack retval ok 56 fprintf(stderr, "thread id = %d\n", thread_id); 57 // CHECK: thread id = 1 58 fprintf(stderr, "thread os id = 0x%llx\n", thread_os_id); 59 // CHECK: thread os id = [[THREAD_OS_ID]] 60 fprintf(stderr, "%p\n", trace[0]); 61 // CHECK: 0x{{0*}}[[ALLOC_FRAME_0:[0-9a-f]+]] 62 fprintf(stderr, "%p\n", trace[1]); 63 // CHECK: 0x{{0*}}[[ALLOC_FRAME_1:[0-9a-f]+]] 64 fprintf(stderr, "%p\n", trace[2]); 65 // CHECK: 0x{{0*}}[[ALLOC_FRAME_2:[0-9a-f]+]] 66 67 pthread_create(&t, NULL, RaceThread, NULL); 68 barrier_wait(&barrier); 69 mem[0] = 'b'; 70 pthread_join(t, NULL); 71 72 free(mem); 73 74 return 0; 75 } 76 77 // CHECK: WARNING: ThreadSanitizer: data race 78 // CHECK: Location is heap block of size 10 at {{.*}} allocated by thread T1 79 // CHECK: #0 0x{{0*}}[[ALLOC_FRAME_0]] 80 // CHECK: #1 0x{{0*}}[[ALLOC_FRAME_1]] in alloc_func 81 // CHECK: #2 0x{{0*}}[[ALLOC_FRAME_2]] in AllocThread 82