blob: e8bac22647bb55840d1b368e612245cc31416caf [file] [log] [blame]
Kaido Kert788710a2023-06-05 07:50:22 -07001// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
2#include "test.h"
3#include <stdint.h>
4#include <errno.h>
5#include <sys/mman.h>
6
7// Test for issue:
8// https://github.com/google/sanitizers/issues/412
9
10// MAP_32BIT flag for mmap is supported only for x86_64.
11// XFAIL: target=mips{{.*}}
12// XFAIL: target=aarch64{{.*}}
13// XFAIL: target=powerpc64{{.*}}
14// XFAIL: target=s390x{{.*}}
15// XFAIL: target=loongarch64{{.*}}
16
17// MAP_32BIT doesn't exist on OS X and NetBSD.
18// UNSUPPORTED: darwin,target={{.*netbsd.*}}
19
20void *Thread(void *ptr) {
21 *(int*)ptr = 42;
22 barrier_wait(&barrier);
23 return 0;
24}
25
26int main() {
27 barrier_init(&barrier, 2);
28 void *ptr = mmap(0, 128 << 10, PROT_READ|PROT_WRITE,
29 MAP_32BIT|MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
30 fprintf(stderr, "ptr=%p\n", ptr);
31 if (ptr == MAP_FAILED) {
32 fprintf(stderr, "mmap failed: %d\n", errno);
33 return 1;
34 }
35 if ((uintptr_t)ptr >= (1ull << 32)) {
36 fprintf(stderr, "ptr is too high\n");
37 return 1;
38 }
39 pthread_t t;
40 pthread_create(&t, 0, Thread, ptr);
41 barrier_wait(&barrier);
42 *(int*)ptr = 42;
43 pthread_join(t, 0);
44 munmap(ptr, 128 << 10);
45 fprintf(stderr, "DONE\n");
46}
47
48// CHECK: WARNING: ThreadSanitizer: data race
49// CHECK: DONE