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https://github.com/Gericom/teak-llvm.git
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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
73 lines
1.8 KiB
C++
73 lines
1.8 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 master
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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 master
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;
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#pragma omp master nowait // expected-error {{unexpected OpenMP clause 'nowait' in directive '#pragma omp master'}}
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#pragma omp master unknown // expected-warning {{extra tokens at the end of '#pragma omp master' are ignored}}
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foo();
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{
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#pragma omp master
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} // expected-error {{expected statement}}
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#pragma omp for
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp master // expected-error {{region cannot be closely nested inside 'for' region}}
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foo();
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}
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#pragma omp sections
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{
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foo();
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#pragma omp master // expected-error {{region cannot be closely nested inside 'sections' region}}
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foo();
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}
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#pragma omp single
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp master allocate(i) // expected-error {{region cannot be closely nested inside 'single' region}} expected-error {{unexpected OpenMP clause 'allocate' in directive '#pragma omp master'}}
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foo();
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}
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#pragma omp master
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for (int i = 0; i < 10; ++i) {
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foo();
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#pragma omp master
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foo();
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}
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#pragma omp for ordered
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for (int i = 0; i < 10; ++i)
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#pragma omp master // expected-error {{region cannot be closely nested inside 'for' region}}
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{
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foo();
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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 master
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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 master
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{
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L2:
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foo();
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}
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return 0;
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}
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