1*bcaeed49SFangrui Song // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2*bcaeed49SFangrui Song #include "java.h"
3*bcaeed49SFangrui Song #include <errno.h>
4*bcaeed49SFangrui Song #include <sys/mman.h>
5*bcaeed49SFangrui Song
main()6*bcaeed49SFangrui Song int main() {
7*bcaeed49SFangrui Song // Test that munmap interceptor resets meta shadow for the memory range.
8*bcaeed49SFangrui Song // Previously __tsan_java_move failed because it encountered non-zero meta
9*bcaeed49SFangrui Song // shadow for the destination.
10*bcaeed49SFangrui Song int const kHeapSize = 1024 * 1024;
11*bcaeed49SFangrui Song jptr jheap = (jptr)mmap(0, kHeapSize, PROT_READ | PROT_WRITE,
12*bcaeed49SFangrui Song MAP_ANON | MAP_PRIVATE, -1, 0);
13*bcaeed49SFangrui Song if (jheap == (jptr)MAP_FAILED)
14*bcaeed49SFangrui Song return printf("mmap failed with %d\n", errno);
15*bcaeed49SFangrui Song __atomic_store_n((int*)jheap, 1, __ATOMIC_RELEASE);
16*bcaeed49SFangrui Song munmap((void*)jheap, kHeapSize);
17*bcaeed49SFangrui Song jheap = (jptr)mmap((void*)jheap, kHeapSize, PROT_READ | PROT_WRITE,
18*bcaeed49SFangrui Song MAP_ANON | MAP_PRIVATE, -1, 0);
19*bcaeed49SFangrui Song if (jheap == (jptr)MAP_FAILED)
20*bcaeed49SFangrui Song return printf("second mmap failed with %d\n", errno);
21*bcaeed49SFangrui Song __tsan_java_init(jheap, kHeapSize);
22*bcaeed49SFangrui Song __tsan_java_move(jheap + 16, jheap, 16);
23*bcaeed49SFangrui Song fprintf(stderr, "DONE\n");
24*bcaeed49SFangrui Song return __tsan_java_fini();
25*bcaeed49SFangrui Song }
26*bcaeed49SFangrui Song
27*bcaeed49SFangrui Song // CHECK-NOT: WARNING: ThreadSanitizer: data race
28*bcaeed49SFangrui Song // CHECK: DONE
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