| // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s |
| // This test fails on powerpc64 BE (VMA=44), it does not appear to be |
| // a functional problem, but the Tsan report is missing some info. |
| // XFAIL: target=powerpc64-unknown-linux-gnu{{.*}} |
| |
| #include "test.h" |
| #include <signal.h> |
| #include <sys/types.h> |
| #include <errno.h> |
| |
| pthread_t mainth; |
| volatile int done; |
| |
| static void MyHandler(int, siginfo_t *s, void *c) { |
| errno = 1; |
| done = 1; |
| } |
| |
| static void* sendsignal(void *p) { |
| barrier_wait(&barrier); |
| pthread_kill(mainth, SIGPROF); |
| return 0; |
| } |
| |
| static __attribute__((noinline)) void loop() { |
| barrier_wait(&barrier); |
| while (done == 0) { |
| volatile char *p = (char*)malloc(1); |
| p[0] = 0; |
| free((void*)p); |
| sched_yield(); |
| } |
| } |
| |
| int main() { |
| barrier_init(&barrier, 2); |
| mainth = pthread_self(); |
| struct sigaction act = {}; |
| act.sa_sigaction = &MyHandler; |
| sigaction(SIGPROF, &act, 0); |
| pthread_t th; |
| pthread_create(&th, 0, sendsignal, 0); |
| loop(); |
| pthread_join(th, 0); |
| return 0; |
| } |
| |
| // CHECK: WARNING: ThreadSanitizer: signal handler spoils errno |
| // CHECK: Signal 27 handler invoked at: |
| // CHECK: #0 MyHandler(int, {{(__)?}}siginfo{{(_t)?}}*, void*) {{.*}}signal_errno.cpp |
| // CHECK: main |
| // CHECK: SUMMARY: ThreadSanitizer: signal handler spoils errno{{.*}}MyHandler |