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// RUN: %clangxx_tsan %s -o %t && %run %t 2>&1 | FileCheck %s
// UNSUPPORTED: darwin
// It's very flaky on PPC with COMPILER_RT_DEBUG.
// UNSUPPORTED: !compiler-rt-optimized && ppc
// Test case for https://github.com/google/sanitizers/issues/1540
#include <errno.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
volatile int X;
static void handler(int sig) {
(void)sig;
if (X != 0)
printf("bad");
}
static void *thr1(void *p) {
sleep(1);
return 0;
}
static void *thr(void *p) {
pthread_t th[10];
for (int i = 0; i < sizeof(th) / sizeof(th[0]); i++)
pthread_create(&th[i], 0, thr1, 0);
for (int i = 0; i < sizeof(th) / sizeof(th[0]); i++)
pthread_join(th[i], 0);
return 0;
}
int main() {
struct sigaction act = {};
act.sa_handler = &handler;
if (sigaction(SIGPROF, &act, 0)) {
perror("sigaction");
exit(1);
}
itimerval t;
t.it_value.tv_sec = 0;
t.it_value.tv_usec = 10;
t.it_interval = t.it_value;
if (setitimer(ITIMER_PROF, &t, 0)) {
perror("setitimer");
exit(1);
}
pthread_t th[100];
for (int i = 0; i < sizeof(th) / sizeof(th[0]); i++)
pthread_create(&th[i], 0, thr, 0);
for (int i = 0; i < sizeof(th) / sizeof(th[0]); i++)
pthread_join(th[i], 0);
fprintf(stderr, "DONE\n");
return 0;
}
// CHECK-NOT: WARNING: ThreadSanitizer:
// CHECK: DONE
// CHECK-NOT: WARNING: ThreadSanitizer:
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