forked from OSchip/llvm-project
29 lines
1.0 KiB
C++
29 lines
1.0 KiB
C++
// 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
|