1 /* 2 * parallel-simple2.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 main(int argc,char * argv[])20int main(int argc, char *argv[]) { 21 int var = 0; 22 23 // Create team of threads so that there is no implicit happens before 24 // when creating the thread. 25 #pragma omp parallel num_threads(2) 26 {} 27 28 var++; 29 30 #pragma omp parallel num_threads(2) shared(var) 31 { 32 if (omp_get_thread_num() == 1) { 33 var++; 34 } 35 } // implicit barrier 36 37 fprintf(stderr, "DONE\n"); 38 int error = (var != 2); 39 return error; 40 } 41 42 // CHECK-NOT: ThreadSanitizer: data race 43 // CHECK-NOT: ThreadSanitizer: reported 44 // CHECK: DONE 45