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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
41 lines
1.6 KiB
C++
41 lines
1.6 KiB
C++
// RUN: %clang_cc1 -verify -fopenmp -ferror-limit 100 %s -Wuninitialized
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// RUN: %clang_cc1 -verify -fopenmp-simd -ferror-limit 100 %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 target update to(x)
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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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bool foobool(int argc) {
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return argc;
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}
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struct S1; // Aexpected-note {{declared here}}
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template <class T, class S> // Aexpected-note {{declared here}}
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int tmain(T argc, S **argv) {
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int n;
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return 0;
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}
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int main(int argc, char **argv) {
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int m;
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#pragma omp target update // expected-error {{expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'}}
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#pragma omp target update to(m) { // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}}
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#pragma omp target update to(m) ( // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}}
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#pragma omp target update to(m) [ // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}}
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#pragma omp target update to(m) ] // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}}
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#pragma omp target update to(m) ) // expected-warning {{extra tokens at the end of '#pragma omp target update' are ignored}}
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#pragma omp target update from(m) allocate(m) // expected-error {{unexpected OpenMP clause 'allocate' in directive '#pragma omp target update'}}
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{
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foo();
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}
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return tmain(argc, argv);
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}
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