29 lines · cpp
1// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s2#include "java.h"3#include <errno.h>4#include <sys/mman.h>5 6int main() {7 // Test that munmap interceptor resets meta shadow for the memory range.8 // Previously __tsan_java_move failed because it encountered non-zero meta9 // shadow for the destination.10 int const kHeapSize = 1024 * 1024;11 jptr jheap = (jptr)mmap(0, kHeapSize, PROT_READ | PROT_WRITE,12 MAP_ANON | MAP_PRIVATE, -1, 0);13 if (jheap == (jptr)MAP_FAILED)14 return printf("mmap failed with %d\n", errno);15 __atomic_store_n((int*)jheap, 1, __ATOMIC_RELEASE);16 munmap((void*)jheap, kHeapSize);17 jheap = (jptr)mmap((void*)jheap, kHeapSize, PROT_READ | PROT_WRITE,18 MAP_ANON | MAP_PRIVATE, -1, 0);19 if (jheap == (jptr)MAP_FAILED)20 return printf("second mmap failed with %d\n", errno);21 __tsan_java_init(jheap, kHeapSize);22 __tsan_java_move(jheap + 16, jheap, 16);23 fprintf(stderr, "DONE\n");24 return __tsan_java_fini();25}26 27// CHECK-NOT: WARNING: ThreadSanitizer: data race28// CHECK: DONE29