Dmitry Vyukov d78782f6a6 tsan: fix warnings in tests
Fix format specifier.
Fix warnings about non-standard attribute placement.
Make free_race2.c test a bit more interesting:
test access with/without an offset.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D101424
2021-04-29 07:42:18 +02:00

33 lines
687 B
C++

// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
#include "test.h"
int X = 0;
__attribute__((noinline)) void MySleep() {
sleep(1); // the sleep that must appear in the report
}
void *Thread(void *p) {
barrier_wait(&barrier);
MySleep(); // Assume the main thread has done the write.
X = 42;
return 0;
}
int main() {
barrier_init(&barrier, 2);
pthread_t t;
pthread_create(&t, 0, Thread, 0);
X = 43;
barrier_wait(&barrier);
pthread_join(t, 0);
return 0;
}
// CHECK: WARNING: ThreadSanitizer: data race
// ...
// CHECK: As if synchronized via sleep:
// CHECK-NEXT: #0 sleep
// CHECK-NEXT: #1 MySleep
// CHECK-NEXT: #2 Thread