1 files changed, 11 insertions, 4 deletions
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index 52578599ea..2afdc32db0 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -3729,6 +3729,12 @@ DeclID ASTWriter::GetDeclRef(const Decl *D) {
   if (D == 0) {
     return 0;
   }
+  
+  // If D comes from an AST file, its declaration ID is already known and
+  // fixed.
+  if (D->isFromASTFile())
+    return D->getGlobalID();
+  
   assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer");
   DeclID &ID = DeclIDs[D];
   if (ID == 0) {
@@ -3745,6 +3751,11 @@ DeclID ASTWriter::getDeclID(const Decl *D) {
   if (D == 0)
     return 0;
 
+  // If D comes from an AST file, its declaration ID is already known and
+  // fixed.
+  if (D->isFromASTFile())
+    return D->getGlobalID();
+
   assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!");
   return DeclIDs[D];
 }
@@ -4273,10 +4284,6 @@ void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
     StoredIdx = Idx;
 }
 
-void ASTWriter::DeclRead(DeclID ID, const Decl *D) {
-  DeclIDs[D] = ID;
-}
-
 void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
   SelectorIDs[S] = ID;
 }