49 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s2#include "java.h"3#include <memory.h>4#include <sanitizer/tsan_interface.h>5 6#if (__APPLE__)7__attribute__((weak)) // Required for dyld macOS 12.0+8#endif9__attribute__((disable_sanitizer_instrumentation))10extern "C" bool11__tsan_symbolize_external(jptr pc, char *func_buf, jptr func_siz,12 char *file_buf, jptr file_siz, int *line, int *col) {13 if (pc == (1234 | kExternalPCBit)) {14 memcpy(func_buf, "MyFunc", sizeof("MyFunc"));15 memcpy(file_buf, "MyFile.java", sizeof("MyFile.java"));16 *line = 1234;17 *col = 56;18 return true;19 }20 return false;21}22 23void *Thread(void *p) {24 barrier_wait(&barrier);25 __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);26 return 0;27}28 29int main() {30 barrier_init(&barrier, 2);31 int const kHeapSize = 1024 * 1024;32 jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;33 __tsan_java_init(jheap, kHeapSize);34 const int kBlockSize = 16;35 __tsan_java_alloc(jheap, kBlockSize);36 pthread_t th;37 pthread_create(&th, 0, Thread, (void*)jheap);38 __tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit);39 barrier_wait(&barrier);40 pthread_join(th, 0);41 __tsan_java_free(jheap, kBlockSize);42 fprintf(stderr, "DONE\n");43 return __tsan_java_fini();44}45 46// CHECK: WARNING: ThreadSanitizer: data race47// CHECK: #0 MyFunc MyFile.java:1234:5648// CHECK: DONE49