From eaa4ade80e2765591e7fee4b20b5c20a0d1ce480 Mon Sep 17 00:00:00 2001
From: Sebastian Redl <sebastian.redl@getdesigned.at>
Date: Wed, 11 Aug 2010 18:52:41 +0000
Subject: [PATCH] Reintroduce the ASTConsumer/ASTUnit fix from r110610, it has
 nothing to do with the breakage.

llvm-svn: 110840
---
 clang/include/clang/AST/ASTConsumer.h | 5 +++++
 clang/lib/AST/ASTConsumer.cpp         | 3 +++
 clang/lib/Frontend/ASTUnit.cpp        | 3 +++
 clang/lib/Frontend/PCHReader.cpp      | 4 ++--
 4 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/clang/include/clang/AST/ASTConsumer.h b/clang/include/clang/AST/ASTConsumer.h
index b01f6c600174..3f964ad0e9df 100644
--- a/clang/include/clang/AST/ASTConsumer.h
+++ b/clang/include/clang/AST/ASTConsumer.h
@@ -49,6 +49,11 @@ public:
   /// elements). Use Decl::getNextDeclarator() to walk the chain.
   virtual void HandleTopLevelDecl(DeclGroupRef D);
 
+  /// HandleInterestingDecl - Handle the specified interesting declaration. This
+  /// is called by the PCH reader when deserializing things that might interest
+  /// the consumer. The default implementation forwards to HandleTopLevelDecl.
+  virtual void HandleInterestingDecl(DeclGroupRef D);
+
   /// HandleTranslationUnit - This method is called when the ASTs for entire
   /// translation unit have been parsed.
   virtual void HandleTranslationUnit(ASTContext &Ctx) {}
diff --git a/clang/lib/AST/ASTConsumer.cpp b/clang/lib/AST/ASTConsumer.cpp
index f37cbdea5480..04a084a06a44 100644
--- a/clang/lib/AST/ASTConsumer.cpp
+++ b/clang/lib/AST/ASTConsumer.cpp
@@ -17,3 +17,6 @@ using namespace clang;
 
 void ASTConsumer::HandleTopLevelDecl(DeclGroupRef D) {}
 
+void ASTConsumer::HandleInterestingDecl(DeclGroupRef D) {
+  HandleTopLevelDecl(D);
+}
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index fe4768db7c72..bbe2ec5bea66 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -320,6 +320,9 @@ public:
       Unit.addTopLevelDecl(D);
     }
   }
+
+  // We're not interested in "interesting" decls.
+  void HandleInterestingDecl(DeclGroupRef) {}
 };
 
 class TopLevelDeclTrackerAction : public ASTFrontendAction {
diff --git a/clang/lib/Frontend/PCHReader.cpp b/clang/lib/Frontend/PCHReader.cpp
index 1bfc138d4fb9..68acbb2faf93 100644
--- a/clang/lib/Frontend/PCHReader.cpp
+++ b/clang/lib/Frontend/PCHReader.cpp
@@ -2262,7 +2262,7 @@ QualType PCHReader::ReadTypeRecord(unsigned Index) {
   SavedStreamPosition SavedPosition(DeclsCursor);
 
   ReadingKindTracker ReadingKind(Read_Type, *this);
-  
+
   // Note that we are loading a type record.
   Deserializing AType(this);
 
@@ -3027,7 +3027,7 @@ void PCHReader::PassInterestingDeclsToConsumer() {
   while (!InterestingDecls.empty()) {
     DeclGroupRef DG(InterestingDecls.front());
     InterestingDecls.pop_front();
-    Consumer->HandleTopLevelDecl(DG);
+    Consumer->HandleInterestingDecl(DG);
   }
 }
 
-- 
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