[flang-commits] [flang] [flang] Add [[maybe_unused]] to fix -Werror build (PR #83456)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-flang-fir-hlfir

Author: Peter Klausler (klausler)

<details>
<summary>Changes</summary>

Add the [[maybe_unused]] attribute to a variable in lib/Lower/OpenMP/OpenMP.cpp to avoid a (possibly bogus) unused variable warning when building with GCC 9.3.0.

---
Full diff: https://github.com/llvm/llvm-project/pull/83456.diff


1 Files Affected:

- (modified) flang/lib/Lower/OpenMP/OpenMP.cpp (+1-1) 


``````````diff
diff --git a/flang/lib/Lower/OpenMP/OpenMP.cpp b/flang/lib/Lower/OpenMP/OpenMP.cpp
index 21ad51c53d8742..b68976a4c765c3 100644
--- a/flang/lib/Lower/OpenMP/OpenMP.cpp
+++ b/flang/lib/Lower/OpenMP/OpenMP.cpp
@@ -840,7 +840,7 @@ genEnterExitUpdateDataOp(Fortran::lower::AbstractConverter &converter,
   llvm::SmallVector<mlir::Attribute> dependTypeOperands;
 
   Fortran::parser::OmpIfClause::DirectiveNameModifier directiveName;
-  llvm::omp::Directive directive;
+  [[maybe_unused]] llvm::omp::Directive directive;
   if constexpr (std::is_same_v<OpTy, mlir::omp::EnterDataOp>) {
     directiveName =
         Fortran::parser::OmpIfClause::DirectiveNameModifier::TargetEnterData;

``````````

</details>


https://github.com/llvm/llvm-project/pull/83456