llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang-format
Author: 天音あめ (amane-ame)
<details>
<summary>Changes</summary>
An empty expansion should be valid, like `echo 'A()' | clang-format
--style='{Macros: [A(x)=x]}'`
See #<!-- -->119258.
---
Full diff: https://github.com/llvm/llvm-project/pull/119428.diff
1 Files Affected:
- (modified) clang/lib/Format/MacroExpander.cpp (+4)
``````````diff
diff --git a/clang/lib/Format/MacroExpander.cpp
b/clang/lib/Format/MacroExpander.cpp
index fd2a16894d643d..ed9e51dfbfef1f 100644
--- a/clang/lib/Format/MacroExpander.cpp
+++ b/clang/lib/Format/MacroExpander.cpp
@@ -233,6 +233,10 @@ MacroExpander::expand(FormatToken *ID,
if (Result.size() > 1) {
++Result[0]->MacroCtx->StartOfExpansion;
++Result[Result.size() - 2]->MacroCtx->EndOfExpansion;
+ } else {
+ // If the macro expansion is empty, mark the start and end
+ Result[0]->MacroCtx->StartOfExpansion = 1;
+ Result[0]->MacroCtx->EndOfExpansion = 1;
}
return Result;
}
``````````
</details>
https://github.com/llvm/llvm-project/pull/119428
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