File: custom_mutex5.cpp

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 (33 lines) | stat: -rw-r--r-- 978 bytes parent folder | download | duplicates (15) 
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
 
// RUN: %clangxx_tsan -O1 --std=c++17 %s -o %t && %deflake %run %t 2>&1 | FileCheck %s
#include "custom_mutex.h"

#include <cstddef>

// Test that we detect the destruction of an in-use mutex when the
// thread annotations don't otherwise disable the check.

int main() {
  alignas(Mutex) std::byte mu1_store[sizeof(Mutex)];
  Mutex* mu1 = reinterpret_cast<Mutex*>(&mu1_store);
  new(&mu1_store) Mutex(false, 0);
  mu1->Lock();
  mu1->~Mutex();
  mu1->Unlock();

  alignas(Mutex) std::byte mu2_store[sizeof(Mutex)];
  Mutex* mu2 = reinterpret_cast<Mutex*>(&mu2_store);
  new(&mu2_store)
      Mutex(false, __tsan_mutex_not_static, __tsan_mutex_not_static);
  mu2->Lock();
  mu2->~Mutex();
  mu2->Unlock();

  fprintf(stderr, "DONE\n");
  return 0;
}

// CHECK: WARNING: ThreadSanitizer: destroy of a locked mutex
// CHECK:   main {{.*}}custom_mutex5.cpp:14
// CHECK: WARNING: ThreadSanitizer: destroy of a locked mutex
// CHECK:   main {{.*}}custom_mutex5.cpp:22
// CHECK: DONE