| // 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 a non-regular kHeapSize |
| // Previously __tsan_java_init failed because it encountered non-zero meta |
| // shadow for the destination. |
| size_t const kPageSize = sysconf(_SC_PAGESIZE); |
| int const kSize = kPageSize - 1; |
| jptr jheap2 = (jptr)mmap(0, kSize, PROT_READ | PROT_WRITE, |
| MAP_ANON | MAP_PRIVATE, -1, 0); |
| if (jheap2 == (jptr)MAP_FAILED) |
| return printf("mmap failed with %d\n", errno); |
| __atomic_store_n((int *)(jheap2 + kSize - 3), 1, __ATOMIC_RELEASE); |
| // Due to the previous incorrect meta-end calculation, the following munmap |
| // did not clear the tail meta shadow. |
| munmap((void *)jheap2, kSize); |
| int const kHeapSize2 = kSize + 1; |
| jheap2 = (jptr)mmap((void *)jheap2, kHeapSize2, PROT_READ | PROT_WRITE, |
| MAP_ANON | MAP_PRIVATE, -1, 0); |
| if (jheap2 == (jptr)MAP_FAILED) |
| return printf("second mmap failed with %d\n", errno); |
| __tsan_java_init(jheap2, kHeapSize2); |
| __tsan_java_move(jheap2, jheap2 + kHeapSize2 - 8, 8); |
| fprintf(stderr, "DONE\n"); |
| return __tsan_java_fini(); |
| } |
| |
| // CHECK-NOT: WARNING: ThreadSanitizer: data race |
| // CHECK: DONE |
