openmp/tools/archer/tests/critical/critical.c

   1 /*
   2  * critical.c -- Archer testcase
   3  */
   4
   5 //===----------------------------------------------------------------------===//
   6 //
   7 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   8 //
   9 // See tools/archer/LICENSE.txt for details.
  10 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14
  15 // RUN: %libarcher-compile-and-run | FileCheck %s
  16 // REQUIRES: tsan
  17 #include <omp.h>
  18 #include <stdio.h>
  19
  20 int main(int argc, char *argv[]) {
  21   int var = 0;
  22
  23 #pragma omp parallel num_threads(8) shared(var)
  24   {
  25 #pragma omp critical
  26     { var++; }
  27   }
  28
  29   fprintf(stderr, "DONE\n");
  30   int error = (var != 8);
  31   return error;
  32 }
  33
  34 // CHECK-NOT: ThreadSanitizer: data race
  35 // CHECK-NOT: ThreadSanitizer: reported
  36 // CHECK: DONE