| // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s | |
| #include "java.h" | |
| #include <errno.h> | |
| #include <sys/mman.h> | |
| int main() { | |
| // Test that munmap interceptor resets meta shadow for the memory range. | |
| // Previously __tsan_java_move failed because it encountered non-zero meta | |
| // shadow for the destination. | |
| int const kHeapSize = 1024 * 1024; | |
| jptr jheap = (jptr)mmap(0, kHeapSize, PROT_READ | PROT_WRITE, | |
| MAP_ANON | MAP_PRIVATE, -1, 0); | |
| if (jheap == (jptr)MAP_FAILED) | |
| return printf("mmap failed with %d\n", errno); | |
| __atomic_store_n((int*)jheap, 1, __ATOMIC_RELEASE); | |
| munmap((void*)jheap, kHeapSize); | |
| jheap = (jptr)mmap((void*)jheap, kHeapSize, PROT_READ | PROT_WRITE, | |
| MAP_ANON | MAP_PRIVATE, -1, 0); | |
| if (jheap == (jptr)MAP_FAILED) | |
| return printf("second mmap failed with %d\n", errno); | |
| __tsan_java_init(jheap, kHeapSize); | |
| __tsan_java_move(jheap + 16, jheap, 16); | |
| fprintf(stderr, "DONE\n"); | |
| return __tsan_java_fini(); | |
| } | |
| // CHECK-NOT: WARNING: ThreadSanitizer: data race | |
| // CHECK: DONE |