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| // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
uint64_t objs[8*3*3*2][3];
extern "C" {
void __tsan_unaligned_read2(void *addr);
void __tsan_unaligned_read4(void *addr);
void __tsan_unaligned_read8(void *addr);
void __tsan_unaligned_write2(void *addr);
void __tsan_unaligned_write4(void *addr);
void __tsan_unaligned_write8(void *addr);
}
static void access(char *p, int sz, int rw) {
if (rw) {
switch (sz) {
case 0: __tsan_unaligned_write2(p); break;
case 1: __tsan_unaligned_write4(p); break;
case 2: __tsan_unaligned_write8(p); break;
default: exit(1);
}
} else {
switch (sz) {
case 0: __tsan_unaligned_read2(p); break;
case 1: __tsan_unaligned_read4(p); break;
case 2: __tsan_unaligned_read8(p); break;
default: exit(1);
}
}
}
static int accesssize(int sz) {
switch (sz) {
case 0: return 2;
case 1: return 4;
case 2: return 8;
}
exit(1);
}
void Test(bool main) {
uint64_t *obj = objs[0];
for (int off = 0; off < 8; off++) {
for (int sz1 = 0; sz1 < 3; sz1++) {
for (int sz2 = 0; sz2 < 3; sz2++) {
for (int rw = 0; rw < 2; rw++) {
char *p = (char*)obj + off;
if (main) {
// printf("thr=%d off=%d sz1=%d sz2=%d rw=%d p=%p\n",
// main, off, sz1, sz2, rw, p);
access(p, sz1, true);
} else {
p += accesssize(sz1);
// printf("thr=%d off=%d sz1=%d sz2=%d rw=%d p=%p\n",
// main, off, sz1, sz2, rw, p);
access(p, sz2, rw);
}
obj += 3;
}
}
}
}
}
void *Thread(void *p) {
(void)p;
Test(false);
return 0;
}
int main() {
pthread_t th;
pthread_create(&th, 0, Thread, 0);
Test(true);
pthread_join(th, 0);
fprintf(stderr, "OK\n");
}
// CHECK-NOT: WARNING: ThreadSanitizer:
// CHECK: OK
|