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| // 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
|