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// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
static void handler(int, siginfo_t*, void*) {
const char *str = "HELLO FROM SIGNAL\n";
write(2, str, strlen(str));
}
int main() {
struct sigaction act = {};
act.sa_sigaction = &handler;
sigaction(SIGPROF, &act, 0);
kill(getpid(), SIGPROF);
sleep(1); // let the signal handler run, can't use barrier in sig handler
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK-NOT: WARNING: ThreadSanitizer
// CHECK: HELLO FROM SIGNAL
// CHECK: DONE
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