1bcaeed49SFangrui Song // RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
2bcaeed49SFangrui Song #include "test.h"
3bcaeed49SFangrui Song #include <signal.h>
4bcaeed49SFangrui Song #include <sys/types.h>
5bcaeed49SFangrui Song
handler(int,siginfo_t *,void *)6bcaeed49SFangrui Song static void handler(int, siginfo_t*, void*) {
7bcaeed49SFangrui Song // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
8bcaeed49SFangrui Song // CHECK: #0 malloc
9bcaeed49SFangrui Song // CHECK: #{{(1|2)}} handler(int, {{(__)?}}siginfo{{(_t)?}}*, void*) {{.*}}signal_malloc.cpp:[[@LINE+2]]
10bcaeed49SFangrui Song // CHECK: SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal{{.*}}handler
11bcaeed49SFangrui Song volatile char *p = (char*)malloc(1);
12bcaeed49SFangrui Song p[0] = 0;
13*9ef9d01aSDmitry Vyukov // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
14*9ef9d01aSDmitry Vyukov // CHECK: #0 free
15*9ef9d01aSDmitry Vyukov // CHECK: #{{(1|2)}} handler(int, {{(__)?}}siginfo{{(_t)?}}*, void*) {{.*}}signal_malloc.cpp:[[@LINE+2]]
16*9ef9d01aSDmitry Vyukov // CHECK: SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal{{.*}}handler
17bcaeed49SFangrui Song free((void*)p);
18bcaeed49SFangrui Song }
19bcaeed49SFangrui Song
main()20bcaeed49SFangrui Song int main() {
21bcaeed49SFangrui Song struct sigaction act = {};
22bcaeed49SFangrui Song act.sa_sigaction = &handler;
23bcaeed49SFangrui Song sigaction(SIGPROF, &act, 0);
24bcaeed49SFangrui Song kill(getpid(), SIGPROF);
25bcaeed49SFangrui Song sleep(1); // let the signal handler run
26*9ef9d01aSDmitry Vyukov fprintf(stderr, "DONE\n");
27*9ef9d01aSDmitry Vyukov // CHECK: DONE
28bcaeed49SFangrui Song return 0;
29bcaeed49SFangrui Song }
30bcaeed49SFangrui Song
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