llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-clang Author: Ahmet Faruk Aktaş (ahfakt) <details> <summary>Changes</summary> Fix crash caused by template parameter pack expansion when no instantiation exist. --- Full diff: https://github.com/llvm/llvm-project/pull/99859.diff 1 Files Affected: - (modified) clang/lib/Sema/SemaTemplateVariadic.cpp (+2-2) ``````````diff diff --git a/clang/lib/Sema/SemaTemplateVariadic.cpp b/clang/lib/Sema/SemaTemplateVariadic.cpp index 3d4ccaf68c700..70ceea1dda65b 100644 --- a/clang/lib/Sema/SemaTemplateVariadic.cpp +++ b/clang/lib/Sema/SemaTemplateVariadic.cpp @@ -732,7 +732,7 @@ bool Sema::CheckParameterPacksForExpansion( llvm::PointerUnion<Decl *, DeclArgumentPack *> *Instantiation = CurrentInstantiationScope->findInstantiationOf( ParmPack.first.get<NamedDecl *>()); - if (Instantiation->is<DeclArgumentPack *>()) { + if (Instantiation && Instantiation->is<DeclArgumentPack *>()) { // We could expand this function parameter pack. NewPackSize = Instantiation->get<DeclArgumentPack *>()->size(); } else { @@ -850,7 +850,7 @@ std::optional<unsigned> Sema::getNumArgumentsInExpansion( llvm::PointerUnion<Decl *, DeclArgumentPack *> *Instantiation = CurrentInstantiationScope->findInstantiationOf( Unexpanded[I].first.get<NamedDecl *>()); - if (Instantiation->is<Decl *>()) + if (Instantiation && Instantiation->is<Decl *>()) // The pattern refers to an unexpanded pack. We're not ready to expand // this pack yet. return std::nullopt; `````````` </details> https://github.com/llvm/llvm-project/pull/99859 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
