Support TemplateTemplateParmDecl for PCH.

llvm-svn: 107884

2 files changed, 19 insertions, 4 deletions

diff --git a/clang/lib/Frontend/PCHReaderDecl.cpp b/clang/lib/Frontend/PCHReaderDecl.cpp
index e392cd156e2..6d363ae27eb 100644
--- a/clang/lib/Frontend/PCHReaderDecl.cpp
+++ b/clang/lib/Frontend/PCHReaderDecl.cpp
@@ -856,7 +856,8 @@ void PCHDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
 void PCHDeclReader::VisitTemplateDecl(TemplateDecl *D) {
   VisitNamedDecl(D);
 
-  NamedDecl *TemplatedDecl = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+  NamedDecl *TemplatedDecl
+    = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++]));
   TemplateParameterList* TemplateParams
       = Reader.ReadTemplateParameterList(Record, Idx); 
   D->init(TemplatedDecl, TemplateParams);
@@ -1020,7 +1021,14 @@ void PCHDeclReader::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
 }
 
 void PCHDeclReader::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
-  assert(false && "cannot read TemplateTemplateParmDecl");
+  VisitTemplateDecl(D);
+  // TemplateParmPosition.
+  D->setDepth(Record[Idx++]);
+  D->setPosition(Record[Idx++]);
+  // Rest of TemplateTemplateParmDecl.
+  TemplateArgumentLoc Arg = Reader.ReadTemplateArgumentLoc(Record, Idx);
+  bool IsInherited = Record[Idx++];
+  D->setDefaultArgument(Arg, IsInherited);
 }
 
 void PCHDeclReader::VisitStaticAssertDecl(StaticAssertDecl *D) {
@@ -1382,7 +1390,7 @@ Decl *PCHReader::ReadDeclRecord(uint64_t Offset, unsigned Index) {
                                         QualType(),0);
     break;
   case pch::DECL_TEMPLATE_TEMPLATE_PARM:
-    assert(false && "cannot read TemplateTemplateParmDecl");
+    D = TemplateTemplateParmDecl::Create(*Context, 0, SourceLocation(),0,0,0,0);
     break;
   case pch::DECL_STATIC_ASSERT:
     assert(false && "cannot read StaticAssertDecl");
diff --git a/clang/lib/Frontend/PCHWriterDecl.cpp b/clang/lib/Frontend/PCHWriterDecl.cpp
index 7c672bdabbb..81cb79226bf 100644
--- a/clang/lib/Frontend/PCHWriterDecl.cpp
+++ b/clang/lib/Frontend/PCHWriterDecl.cpp
@@ -963,7 +963,14 @@ void PCHDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
 }
 
 void PCHDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
-  assert(false && "cannot write TemplateTemplateParmDecl");
+  VisitTemplateDecl(D);
+  // TemplateParmPosition.
+  Record.push_back(D->getDepth());
+  Record.push_back(D->getPosition());
+  // Rest of TemplateTemplateParmDecl.
+  Writer.AddTemplateArgumentLoc(D->getDefaultArgument(), Record);
+  Record.push_back(D->defaultArgumentWasInherited());
+  Code = pch::DECL_TEMPLATE_TEMPLATE_PARM;
 }
 
 void PCHDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {