openmp/tools/archer/tests/races/critical-unrelated.c

   1 /*
   2  * critical-unrelated.c -- Archer testcase
   3  */
   4 //===----------------------------------------------------------------------===//
   5 //
   6 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   7 //
   8 // See tools/archer/LICENSE.txt for details.
   9 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  10 //
  11 //===----------------------------------------------------------------------===//
  12
  13 // RUN: %libarcher-compile-and-run-race | FileCheck %s
  14 // RUN: %libarcher-compile-and-run-race-noserial | FileCheck %s
  15 // REQUIRES: tsan
  16 #include <omp.h>
  17 #include <stdio.h>
  18
  19 int main(int argc, char *argv[]) {
  20   int var = 0;
  21
  22 #pragma omp parallel num_threads(8) shared(var)
  23   {
  24 #pragma omp critical
  25     {
  26       // Dummy region.
  27     }
  28
  29     var++;
  30   }
  31
  32   fprintf(stderr, "DONE\n");
  33 }
  34
  35 // CHECK: WARNING: ThreadSanitizer: data race
  36 // CHECK-NEXT:   {{(Write|Read)}} of size 4
  37 // CHECK-NEXT: #0 {{.*}}critical-unrelated.c:29
  38 // CHECK:   Previous write of size 4
  39 // CHECK-NEXT: #0 {{.*}}critical-unrelated.c:29
  40 // CHECK: DONE
  41 // CHECK: ThreadSanitizer: reported {{[1-7]}} warnings