File: free_race3.c

package info (click to toggle)
swiftlang 6.1.3-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,532 kB
  • sloc: cpp: 9,901,743; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (29 lines) | stat: -rw-r--r-- 630 bytes parent folder | download | duplicates (25) 
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
 
// RUN: %clang_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s

#include "test.h"

int *mem;

void *Thread(void *x) {
  mem[0] = 42;
  barrier_wait(&barrier);
  return NULL;
}

int main() {
  barrier_init(&barrier, 2);
  mem = (int*)malloc(100);
  pthread_t t;
  pthread_create(&t, 0, Thread, 0);
  barrier_wait(&barrier);
  free(mem);
  pthread_join(t, NULL);
  return 0;
}

// CHECK: WARNING: ThreadSanitizer: data race
// CHECK:   Write of size 8 at {{.*}} by main thread{{.*}}:
// CHECK:     #0 free
// CHECK:     #{{(1|2)}} main
// CHECK:   Previous write of size 4 at {{.*}} by thread T1{{.*}}:
// CHECK:     #0 Thread