File: race_range_pc.cpp

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (40 lines) | stat: -rw-r--r-- 971 bytes parent folder | download | duplicates (8) 
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
35
36
37
38
39
40
 
// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
// This test fails on powerpc64 big endian.
// The Tsan report is returning wrong information about
// the location of the race.
// XFAIL: powerpc64-unknown-linux-gnu

#include "test.h"

typedef unsigned long uptr;
extern "C" void __tsan_read_range_pc(uptr addr, uptr size, uptr pc);
extern "C" void __tsan_write_range_pc(uptr addr, uptr size, uptr pc);

void foobar() {
}

void barbaz() {
}

void *Thread(void *p) {
  barrier_wait(&barrier);
  __tsan_read_range_pc((uptr)p, 32, (uptr)foobar + kPCInc);
  return 0;
}

int main() {
  barrier_init(&barrier, 2);
  int a[128];
  pthread_t th;
  pthread_create(&th, 0, Thread, (void*)a);
  __tsan_write_range_pc((uptr)(a+2), 32, (uptr)barbaz + kPCInc);
  barrier_wait(&barrier);
  pthread_join(th, 0);
  fprintf(stderr, "DONE\n");
  return 0;
}

// CHECK: WARNING: ThreadSanitizer: data race
// CHECK:     #0 foobar
// CHECK:     #0 barbaz
// CHECK: DONE