1*7c3d14c8STreehugger Robot // RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
2*7c3d14c8STreehugger Robot #include <stdio.h>
3*7c3d14c8STreehugger Robot #include <stdlib.h>
4*7c3d14c8STreehugger Robot #include <signal.h>
5*7c3d14c8STreehugger Robot #include <string.h>
6*7c3d14c8STreehugger Robot #include <sys/types.h>
7*7c3d14c8STreehugger Robot #include <unistd.h>
8*7c3d14c8STreehugger Robot
handler(int,siginfo_t *,void *)9*7c3d14c8STreehugger Robot static void handler(int, siginfo_t*, void*) {
10*7c3d14c8STreehugger Robot const char *str = "HELLO FROM SIGNAL\n";
11*7c3d14c8STreehugger Robot write(2, str, strlen(str));
12*7c3d14c8STreehugger Robot }
13*7c3d14c8STreehugger Robot
main()14*7c3d14c8STreehugger Robot int main() {
15*7c3d14c8STreehugger Robot struct sigaction act = {};
16*7c3d14c8STreehugger Robot act.sa_sigaction = &handler;
17*7c3d14c8STreehugger Robot sigaction(SIGPROF, &act, 0);
18*7c3d14c8STreehugger Robot kill(getpid(), SIGPROF);
19*7c3d14c8STreehugger Robot sleep(1); // let the signal handler run, can't use barrier in sig handler
20*7c3d14c8STreehugger Robot fprintf(stderr, "DONE\n");
21*7c3d14c8STreehugger Robot return 0;
22*7c3d14c8STreehugger Robot }
23*7c3d14c8STreehugger Robot
24*7c3d14c8STreehugger Robot // CHECK-NOT: WARNING: ThreadSanitizer
25*7c3d14c8STreehugger Robot // CHECK: HELLO FROM SIGNAL
26*7c3d14c8STreehugger Robot // CHECK: DONE
27*7c3d14c8STreehugger Robot
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