Read/write FriendTemplateDecl for PCH.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@109113 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHWriterDecl.cpp b/lib/Frontend/PCHWriterDecl.cpp
index eb7c52a..122bd3d 100644
--- a/lib/Frontend/PCHWriterDecl.cpp
+++ b/lib/Frontend/PCHWriterDecl.cpp
@@ -818,7 +818,17 @@
 }
 
 void PCHDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
-  assert(false && "cannot write FriendTemplateDecl");
+  VisitDecl(D);
+  Record.push_back(D->getNumTemplateParameters());
+  for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
+    Writer.AddTemplateParameterList(D->getTemplateParameterList(i), Record);
+  Record.push_back(D->getFriendDecl() != 0);
+  if (D->getFriendDecl())
+    Writer.AddDeclRef(D->getFriendDecl(), Record);
+  else
+    Writer.AddTypeSourceInfo(D->getFriendType(), Record);
+  Writer.AddSourceLocation(D->getFriendLoc(), Record);
+  Code = pch::DECL_FRIEND_TEMPLATE;
 }
 
 void PCHDeclWriter::VisitTemplateDecl(TemplateDecl *D) {