[clang] [clang] Fix assertion failure in `injectEmbedTokens` (PR #99624)
via cfe-commits
cfe-commits at lists.llvm.org
Fri Jul 19 03:00:38 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-clang
Author: Mariya Podchishchaeva (Fznamznon)
<details>
<summary>Changes</summary>
It seems for C++ lexer has some caching ability which doesn't expect injecting "new" tokens in the middle of the cache. Technically #embed tokens are not completely new since they have already been read from the file and there was #embed annotation token in this place, so set `reinject` flag for them to silence assertion.
---
Full diff: https://github.com/llvm/llvm-project/pull/99624.diff
2 Files Affected:
- (modified) clang/lib/Parse/ParseExpr.cpp (+1-1)
- (modified) clang/test/Preprocessor/embed_weird.cpp (+8)
``````````diff
diff --git a/clang/lib/Parse/ParseExpr.cpp b/clang/lib/Parse/ParseExpr.cpp
index 3d7c58e5b3c3c..a12c375c8d48c 100644
--- a/clang/lib/Parse/ParseExpr.cpp
+++ b/clang/lib/Parse/ParseExpr.cpp
@@ -3597,7 +3597,7 @@ void Parser::injectEmbedTokens() {
I += 2;
}
PP.EnterTokenStream(std::move(Toks), /*DisableMacroExpansion=*/true,
- /*IsReinject=*/false);
+ /*IsReinject=*/true);
ConsumeAnyToken(/*ConsumeCodeCompletionTok=*/true);
}
diff --git a/clang/test/Preprocessor/embed_weird.cpp b/clang/test/Preprocessor/embed_weird.cpp
index cc73a88e5a657..f533230111b43 100644
--- a/clang/test/Preprocessor/embed_weird.cpp
+++ b/clang/test/Preprocessor/embed_weird.cpp
@@ -115,3 +115,11 @@ void f1() {
};
}
#endif
+
+static_assert(_Generic(
+#embed __FILE__ limit(1)
+ , int : 1, default : 0));
+
+static_assert(alignof(typeof(
+#embed __FILE__ limit(1)
+)) == alignof(int));
``````````
</details>
https://github.com/llvm/llvm-project/pull/99624
More information about the cfe-commits
mailing list