================
@@ -84,6 +84,8 @@ class FrontendAction {
/// \return True on success; on failure ExecutionAction() and
/// EndSourceFileAction() will not be called.
virtual bool BeginSourceFileAction(CompilerInstance &CI) {
+ if (CurrentInput.isPreprocessed())
+ CI.getPreprocessor().SetEnableMacroExpansion(false);
----------------
jmmartinez wrote:
Use `SetMacroExpansionOnlyInDirectives` instead. We still need to expand macro
ids in #pragma directives when going through preprocessed code. Usage of macros
on #pragma directives are not expanded in the preprocessed source.
https://github.com/llvm/llvm-project/pull/137665
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