dedcda45c4
TSan in GCC filters duplicates less aggressively. With 8 threads we can expect reports for up to 7 pairs of data race in some tests. Tests pass now with GCC 10, 11, 12
37 lines
1.0 KiB
C
37 lines
1.0 KiB
C
/*
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* parallel-simple.c -- Archer testcase
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*/
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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//
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// See tools/archer/LICENSE.txt for details.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// RUN: %libarcher-compile-and-run-race | FileCheck %s
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// RUN: %libarcher-compile-and-run-race-noserial | FileCheck %s
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// REQUIRES: tsan
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#include <omp.h>
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#include <stdio.h>
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int main(int argc, char *argv[]) {
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int var = 0;
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#pragma omp parallel num_threads(8) shared(var)
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{ var++; }
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int error = (var != 2);
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fprintf(stderr, "DONE\n");
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return error;
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}
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// CHECK: WARNING: ThreadSanitizer: data race
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// CHECK-NEXT: {{(Write|Read)}} of size 4
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// CHECK-NEXT: #0 {{.*}}parallel-simple.c:23
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// CHECK: Previous write of size 4
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// CHECK-NEXT: #0 {{.*}}parallel-simple.c:23
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// CHECK: DONE
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// CHECK: ThreadSanitizer: reported {{[1-7]}} warnings
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