File: ignore_free.cc

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16.1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,388 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (34 lines) | stat: -rw-r--r-- 863 bytes parent folder | download | duplicates (12)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "test.h"

extern "C" {
void AnnotateIgnoreReadsBegin(const char *f, int l);
void AnnotateIgnoreReadsEnd(const char *f, int l);
void AnnotateIgnoreWritesBegin(const char *f, int l);
void AnnotateIgnoreWritesEnd(const char *f, int l);
}

void *Thread(void *p) {
  *(int*)p = 42;
  barrier_wait(&barrier);
  return 0;
}

int main() {
  barrier_init(&barrier, 2);
  int *p = new int(0);
  pthread_t t;
  pthread_create(&t, 0, Thread, p);
  barrier_wait(&barrier);
  AnnotateIgnoreReadsBegin(__FILE__, __LINE__);
  AnnotateIgnoreWritesBegin(__FILE__, __LINE__);
  free(p);
  AnnotateIgnoreReadsEnd(__FILE__, __LINE__);
  AnnotateIgnoreWritesEnd(__FILE__, __LINE__);
  pthread_join(t, 0);
  fprintf(stderr, "OK\n");
  return 0;
}

// CHECK-NOT: WARNING: ThreadSanitizer: data race
// CHECK: OK