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
78 lines
1.6 KiB
C++
78 lines
1.6 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp %s -Wuninitialized
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// RUN: %clang_cc1 -verify -fopenmp-simd %s -Wuninitialized
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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 taskgroup
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argc = x; // expected-warning {{variable 'x' is uninitialized when used here}}
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}
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int foo();
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int main() {
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#pragma omp taskgroup
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;
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#pragma omp taskgroup unknown // expected-warning {{extra tokens at the end of '#pragma omp taskgroup' are ignored}}
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foo();
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{
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#pragma omp taskgroup
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} // expected-error {{expected statement}}
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#pragma omp taskgroup
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#pragma omp taskgroup
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp parallel
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#pragma omp for
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for (int j = 0; j < 10; j++) {
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foo();
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#pragma omp taskgroup
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foo();
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}
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}
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#pragma omp taskgroup
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#pragma omp taskgroup
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp parallel
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#pragma omp for
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for (int j = 0; j < 10; j++) {
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#pragma omp taskgroup
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foo();
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}
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}
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#pragma omp taskgroup
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#pragma omp taskgroup
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp parallel
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#pragma omp for
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for (int j = 0; j < 10; j++) {
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#pragma omp taskgroup
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foo();
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}
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}
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return 0;
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}
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int foo() {
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L1:
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foo();
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#pragma omp taskgroup
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{
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foo();
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goto L1; // expected-error {{use of undeclared label 'L1'}}
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}
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goto L2; // expected-error {{use of undeclared label 'L2'}}
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#pragma omp taskgroup
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{
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L2:
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foo();
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}
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#pragma omp taskgroup init // expected-warning {{extra tokens at the end of '#pragma omp taskgroup' are ignored}}
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;
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return 0;
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}
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