1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s 2 #include "java.h" 3 #include <memory.h> 4 5 extern "C" bool __tsan_symbolize_external(jptr pc, 6 char *func_buf, jptr func_siz, 7 char *file_buf, jptr file_siz, 8 int *line, int *col) { 9 if (pc == (1234 | kExternalPCBit)) { 10 memcpy(func_buf, "MyFunc", sizeof("MyFunc")); 11 memcpy(file_buf, "MyFile.java", sizeof("MyFile.java")); 12 *line = 1234; 13 *col = 56; 14 return true; 15 } 16 return false; 17 } 18 19 void *Thread(void *p) { 20 barrier_wait(&barrier); 21 __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit); 22 return 0; 23 } 24 25 int main() { 26 barrier_init(&barrier, 2); 27 int const kHeapSize = 1024 * 1024; 28 jptr jheap = (jptr)malloc(kHeapSize + 8) + 8; 29 __tsan_java_init(jheap, kHeapSize); 30 const int kBlockSize = 16; 31 __tsan_java_alloc(jheap, kBlockSize); 32 pthread_t th; 33 pthread_create(&th, 0, Thread, (void*)jheap); 34 __tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit); 35 barrier_wait(&barrier); 36 pthread_join(th, 0); 37 __tsan_java_free(jheap, kBlockSize); 38 fprintf(stderr, "DONE\n"); 39 return __tsan_java_fini(); 40 } 41 42 // CHECK: WARNING: ThreadSanitizer: data race 43 // CHECK: #0 MyFunc MyFile.java:1234:56 44 // CHECK: DONE 45
