2 files changed, 21 insertions, 0 deletions
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp
index 46448fff0c9..9acc759fc94 100644
--- a/clang/lib/Serialization/ASTReader.cpp
+++ b/clang/lib/Serialization/ASTReader.cpp
@@ -1972,6 +1972,13 @@ ASTReader::ReadASTBlock(PerFileData &F) {
             std::make_pair(&F, Record[I+1]);
       break;
     }
+
+    case ADDITIONAL_TEMPLATE_SPECIALIZATIONS: {
+      AdditionalTemplateSpecializations &ATS =
+          AdditionalTemplateSpecializationsPending[Record[0]];
+      ATS.insert(ATS.end(), Record.begin()+1, Record.end());
+      break;
+    }
     }
     First = false;
   }
diff --git a/clang/lib/Serialization/ASTReaderDecl.cpp b/clang/lib/Serialization/ASTReaderDecl.cpp
index d2fb408e56c..d5649ad7be0 100644
--- a/clang/lib/Serialization/ASTReaderDecl.cpp
+++ b/clang/lib/Serialization/ASTReaderDecl.cpp
@@ -1424,6 +1424,20 @@ Decl *ASTReader::ReadDeclRecord(unsigned Index, DeclID ID) {
       }
     }
   }
+
+  // If this is a template, read additional specializations that may be in a
+  // different part of the chain.
+  if (isa<RedeclarableTemplateDecl>(D)) {
+    AdditionalTemplateSpecializationsMap::iterator F =
+        AdditionalTemplateSpecializationsPending.find(ID);
+    if (F != AdditionalTemplateSpecializationsPending.end()) {
+      for (AdditionalTemplateSpecializations::iterator I = F->second.begin(),
+                                                       E = F->second.end();
+           I != E; ++I)
+        GetDecl(*I);
+      AdditionalTemplateSpecializationsPending.erase(F);
+    }
+  }
   assert(Idx == Record.size());
 
   // If we have deserialized a declaration that has a definition the