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