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// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
// This test fails on powerpc64 BE (VMA=44), it does not appear to be
// a functional problem, but the Tsan report is missing some info.
// XFAIL: powerpc64-unknown-linux-gnu
#include "test.h"
#include <signal.h>
#include <sys/types.h>
#include <errno.h>
pthread_t mainth;
volatile int done;
static void MyHandler(int, siginfo_t *s, void *c) {
errno = 1;
done = 1;
}
static void* sendsignal(void *p) {
barrier_wait(&barrier);
pthread_kill(mainth, SIGPROF);
return 0;
}
static __attribute__((noinline)) void loop() {
barrier_wait(&barrier);
while (done == 0) {
volatile char *p = (char*)malloc(1);
p[0] = 0;
free((void*)p);
sched_yield();
}
}
int main() {
barrier_init(&barrier, 2);
mainth = pthread_self();
struct sigaction act = {};
act.sa_sigaction = &MyHandler;
sigaction(SIGPROF, &act, 0);
pthread_t th;
pthread_create(&th, 0, sendsignal, 0);
loop();
pthread_join(th, 0);
return 0;
}
// CHECK: WARNING: ThreadSanitizer: signal handler spoils errno
// CHECK: #0 MyHandler(int, {{(__)?}}siginfo{{(_t)?}}*, void*) {{.*}}signal_errno.cc
// CHECK: main
// CHECK: SUMMARY: ThreadSanitizer: signal handler spoils errno{{.*}}MyHandler
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