ASTContext::getCommentForDecl: add comment.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162374 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index adb06147faa2c447bd6d90af53219dd7f3d45da9..1144fcd0d97096ee44684353f9387d7f93715034 100644 (file)
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -370,6 +370,10 @@ comments::FullComment *ASTContext::getCommentForDecl(const Decl *D) const {
   if (!RC)
     return NULL;
 
+  // If the RawComment was attached to other redeclaration of this Decl, we
+  // should parse the comment in context of that other Decl.  This is important
+  // because comments can contain references to parameter names which can be
+  // different across redeclarations.
   if (D != OriginalDecl)
     return getCommentForDecl(OriginalDecl);