c2c21ef9d2
Summary: Some OpenMP clauses rely on the values of the variables. If the variable is not initialized and used in OpenMP clauses that depend on the variables values, it should be reported that the uninitialized variable is used in the OpenMP clause expression. This patch adds initial processing for uninitialized variables in OpenMP constructs. Currently, it checks for use of the uninitialized variables in the structured blocks. Reviewers: NoQ, Szelethus, dcoughlin, xazax.hun, a.sidorin, george.karpenkov, szepet Subscribers: rnkovacs, guansong, jfb, jdoerfert, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D64356 llvm-svn: 365786
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -std=c++11 -o - %s -Wuninitialized
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// RUN: not %clang_cc1 -fopenmp -std=c++11 -fopenmp-targets=aaa-bbb-ccc-ddd -o - %s 2>&1 | FileCheck %s
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// RUN: %clang_cc1 -verify -fopenmp-simd -std=c++11 -o - %s -Wuninitialized
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// CHECK: error: OpenMP target is invalid: 'aaa-bbb-ccc-ddd'
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void xxx(int argc) {
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int x; // expected-note {{initialize the variable 'x' to silence this warning}}
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#pragma omp target parallel
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argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
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}
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void foo() {
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}
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static int pvt;
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#pragma omp threadprivate(pvt)
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#pragma omp target parallel // expected-error {{unexpected OpenMP directive '#pragma omp target parallel'}}
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int main(int argc, char **argv) {
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#pragma omp target parallel { // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel ( // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel [ // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel ] // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel ) // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel } // expected-warning {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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foo();
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#pragma omp target parallel
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foo();
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// expected-warning@+1 {{extra tokens at the end of '#pragma omp target parallel' are ignored}}
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#pragma omp target parallel unknown()
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foo();
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L1:
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foo();
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#pragma omp target parallel
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;
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#pragma omp target parallel
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{
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goto L1; // expected-error {{use of undeclared label 'L1'}}
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argc++;
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}
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for (int i = 0; i < 10; ++i) {
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switch(argc) {
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case (0):
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#pragma omp target parallel
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{
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foo();
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break; // expected-error {{'break' statement not in loop or switch statement}}
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continue; // expected-error {{'continue' statement not in loop statement}}
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}
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default:
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break;
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}
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}
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goto L2; // expected-error {{use of undeclared label 'L2'}}
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#pragma omp target parallel
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L2:
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foo();
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#pragma omp target parallel
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{
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return 1; // expected-error {{cannot return from OpenMP region}}
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}
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[[]] // expected-error {{an attribute list cannot appear here}}
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#pragma omp target parallel
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for (int n = 0; n < 100; ++n) {}
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#pragma omp target parallel copyin(pvt) // expected-error {{unexpected OpenMP clause 'copyin' in directive '#pragma omp target parallel'}}
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foo();
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return 0;
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}
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