[OpenMP] Fix crash when diagnosing dist_schedule #139277
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We were failing to pass a required argument when emitting the diagnostic, so the source range was being used in place of an index. This caused a failed assertion due to the incorrect index. Fixes llvm#139266
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@llvm/pr-subscribers-openmp @llvm/pr-subscribers-clang Author: Aaron Ballman (AaronBallman) ChangesWe were failing to pass a required argument when emitting the diagnostic, so the source range was being used in place of an index. This caused a failed assertion due to the incorrect index. Fixes #139266 Full diff: https://github.com/llvm/llvm-project/pull/139277.diff 3 Files Affected:
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 6c32a7e9a5613..f7d56cfd19ce5 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -903,6 +903,8 @@ OpenMP Support
- Added support for 'omp stripe' directive.
- Fixed a crashing bug with ``omp tile sizes`` if the argument to ``sizes`` was
an invalid expression. (#GH139073)
+- Fixed a crashing bug with ``omp distribute dist_schedule`` if the argument to
+ ``dist_schedule`` was not strictly positive. (#GH139266)
Improvements
^^^^^^^^^^^^
diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 2534822b72f80..e1c63d582c615 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -22753,7 +22753,8 @@ OMPClause *SemaOpenMP::ActOnOpenMPDistScheduleClause(
ValExpr->getIntegerConstantExpr(getASTContext())) {
if (Result->isSigned() && !Result->isStrictlyPositive()) {
Diag(ChunkSizeLoc, diag::err_omp_negative_expression_in_clause)
- << "dist_schedule" << ChunkSize->getSourceRange();
+ << "dist_schedule" << /*strictly positive*/ 1
+ << ChunkSize->getSourceRange();
return nullptr;
}
} else if (getOpenMPCaptureRegionForClause(
diff --git a/clang/test/OpenMP/teams_distribute_dist_schedule_messages.cpp b/clang/test/OpenMP/teams_distribute_dist_schedule_messages.cpp
index 22d2408d3f178..72d8e33173d71 100644
--- a/clang/test/OpenMP/teams_distribute_dist_schedule_messages.cpp
+++ b/clang/test/OpenMP/teams_distribute_dist_schedule_messages.cpp
@@ -105,3 +105,11 @@ int main(int argc, char **argv) {
return (tmain<int, 5>(argc) + tmain<char, 1>(argv[0][0])); // expected-note {{in instantiation of function template specialization 'tmain<int, 5>' requested here}} expected-note {{in instantiation of function template specialization 'tmain<char, 1>' requested here}}
}
+
+namespace GH139266 {
+void f(void) {
+#pragma omp distribute dist_schedule(static, 0) // expected-error {[argument to 'dist_schedule' clause must be a strictly positive integer value}}
+ for (int i = 0; i < 10; i++)
+ ;
+}
+} // namespace GH139266
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jhuber6
approved these changes
May 9, 2025
alexey-bataev
approved these changes
May 9, 2025
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/144/builds/24756 Here is the relevant piece of the build log for the reference |
Fznamznon
reviewed
May 9, 2025
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|
||
| namespace GH139266 { | ||
| void f(void) { | ||
| #pragma omp distribute dist_schedule(static, 0) // expected-error {[argument to 'dist_schedule' clause must be a strictly positive integer value}} |
There was a problem hiding this comment.
Yup, already fixed it. :-)
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/10/builds/5055 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/11/builds/14789 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/174/builds/17515 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/46/builds/16524 Here is the relevant piece of the build log for the reference |
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LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/56/builds/25482 Here is the relevant piece of the build log for the reference |
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/60/builds/26998 Here is the relevant piece of the build log for the reference |
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We were failing to pass a required argument when emitting the diagnostic, so the source range was being used in place of an index. This caused a failed assertion due to the incorrect index.
Fixes #139266