| // 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 |
