| 1 | // 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 | // XFAIL: target=riscv64{{.*}} |
|---|
| 17 | |
|---|
| 18 | // MAP_32BIT doesn't exist on OS X and NetBSD. |
|---|
| 19 | // UNSUPPORTED: darwin,target={{.*netbsd.*}} |
|---|
| 20 | |
|---|
| 21 | void *Thread(void *ptr) { |
|---|
| 22 | *(int*)ptr = 42; |
|---|
| 23 | barrier_wait(barrier: &barrier); |
|---|
| 24 | return 0; |
|---|
| 25 | } |
|---|
| 26 | |
|---|
| 27 | int main() { |
|---|
| 28 | barrier_init(barrier: &barrier, count: 2); |
|---|
| 29 | void *ptr = mmap(addr: 0, len: 128 << 10, PROT_READ|PROT_WRITE, |
|---|
| 30 | MAP_32BIT|MAP_PRIVATE|MAP_ANONYMOUS, fd: -1, offset: 0); |
|---|
| 31 | fprintf(stderr, format: "ptr=%p\n" , ptr); |
|---|
| 32 | if (ptr == MAP_FAILED) { |
|---|
| 33 | fprintf(stderr, format: "mmap failed: %d\n" , errno); |
|---|
| 34 | return 1; |
|---|
| 35 | } |
|---|
| 36 | if ((uintptr_t)ptr >= (1ull << 32)) { |
|---|
| 37 | fprintf(stderr, format: "ptr is too high\n" ); |
|---|
| 38 | return 1; |
|---|
| 39 | } |
|---|
| 40 | pthread_t t; |
|---|
| 41 | pthread_create(newthread: &t, attr: 0, start_routine: Thread, arg: ptr); |
|---|
| 42 | barrier_wait(barrier: &barrier); |
|---|
| 43 | *(int*)ptr = 42; |
|---|
| 44 | pthread_join(th: t, thread_return: 0); |
|---|
| 45 | munmap(addr: ptr, len: 128 << 10); |
|---|
| 46 | fprintf(stderr, format: "DONE\n" ); |
|---|
| 47 | } |
|---|
| 48 | |
|---|
| 49 | // CHECK: WARNING: ThreadSanitizer: data race |
|---|
| 50 | // CHECK: DONE |
|---|
| 51 | |
|---|
