You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39 lines
789 B
39 lines
789 B
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx_tsan -O2 %s -o %t && %run %t 2>&1 | FileCheck %s
|
|
// RUN: %clangxx_tsan -O3 %s -o %t && %run %t 2>&1 | FileCheck %s
|
|
//
|
|
// Check that load widening is not tsan-hostile.
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
struct {
|
|
int i;
|
|
char c1, c2, c3, c4;
|
|
} S;
|
|
|
|
int G;
|
|
|
|
void *Thread1(void *x) {
|
|
G = S.c1 + S.c3;
|
|
return NULL;
|
|
}
|
|
|
|
void *Thread2(void *x) {
|
|
S.c2 = 1;
|
|
return NULL;
|
|
}
|
|
|
|
int main() {
|
|
pthread_t t[2];
|
|
memset(&S, 123, sizeof(S));
|
|
pthread_create(&t[0], NULL, Thread1, NULL);
|
|
pthread_create(&t[1], NULL, Thread2, NULL);
|
|
pthread_join(t[0], NULL);
|
|
pthread_join(t[1], NULL);
|
|
fprintf(stderr, "PASS\n");
|
|
}
|
|
|
|
// CHECK-NOT: WARNING: ThreadSanitizer: data race
|
|
// CHECK: PASS
|