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// RUN: %clangxx_tsan -O1 %s -o %t -DORDER1 && not %t 2>&1 | FileCheck %s
// RUN: %clangxx_tsan -O1 %s -o %t -DORDER2 && not %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdio.h>
#include <unistd.h>
volatile int X;
volatile int N;
void (*volatile F)();
static void foo() {
if (--N == 0)
X = 42;
else
F();
}
void *Thread(void *p) {
#ifdef ORDER1
sleep(1);
#endif
F();
return 0;
}
int main() {
N = 50000;
F = foo;
pthread_t t;
pthread_attr_t a;
pthread_attr_init(&a);
pthread_attr_setstacksize(&a, N * 256 + (1 << 20));
pthread_create(&t, &a, Thread, 0);
#ifdef ORDER2
sleep(1);
#endif
X = 43;
pthread_join(t, 0);
}
// CHECK: WARNING: ThreadSanitizer: data race
// CHECK: #100 foo
// We must output suffucuently large stack (at least 100 frames)
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