diff options
Diffstat (limited to 'clang-tools-extra/clangd/AST.h')
| -rw-r--r-- | clang-tools-extra/clangd/AST.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/clang-tools-extra/clangd/AST.h b/clang-tools-extra/clangd/AST.h index 6cae719986a..a40aeaf32a7 100644 --- a/clang-tools-extra/clangd/AST.h +++ b/clang-tools-extra/clangd/AST.h @@ -148,6 +148,21 @@ std::string getQualification(ASTContext &Context, const NamedDecl *ND, llvm::ArrayRef<std::string> VisibleNamespaces); +/// Whether we must avoid computing linkage for D during code completion. +/// Clang aggressively caches linkage computation, which is stable after the AST +/// is built. Unfortunately the AST is incomplete during code completion, so +/// linkage may still change. +/// +/// Example: `auto x = []{^}` at file scope. +/// During code completion, the initializer for x hasn't been parsed yet. +/// x has type `undeduced auto`, and external linkage. +/// If we compute linkage at this point, the external linkage will be cached. +/// +/// After code completion the initializer is attached, and x has a lambda type. +/// This means x has "unique external" linkage. If we computed linkage above, +/// the cached value is incorrect. (clang catches this with an assertion). +bool hasUnstableLinkage(const Decl *D); + } // namespace clangd } // namespace clang |
