signal_malloc.cc revision 2f588f9d3417aa107ebbbd8830f97501023d3f40 
1// RUN: %clang_tsan -O1 %s -o %t && %t 2>&1 | FileCheck %s
2#include <stdio.h>
3#include <stdlib.h>
4#include <signal.h>
5#include <sys/types.h>
6#include <unistd.h>
7
8static void handler(int, siginfo_t*, void*) {
9  // CHECK: WARNING: ThreadSanitizer: signal-unsafe call inside of a signal
10  // CHECK:     #0 malloc
11  // CHECK:     #{{(1|2)}} handler(int, siginfo{{(_t)?}}*, void*) {{.*}}signal_malloc.cc:[[@LINE+2]]
12  // CHECK: SUMMARY: ThreadSanitizer: signal-unsafe call inside of a signal{{.*}}handler
13  volatile char *p = (char*)malloc(1);
14  p[0] = 0;
15  free((void*)p);
16}
17
18int main() {
19  struct sigaction act = {};
20  act.sa_sigaction = &handler;
21  sigaction(SIGPROF, &act, 0);
22  kill(getpid(), SIGPROF);
23  sleep(1);
24  return 0;
25}
26
27