From aafc0ccfcf860d921a86423c6c9a738301987abf Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Fri, 15 May 2009 19:11:46 +0000
Subject: [PATCH] Make sure that the type associated with a class template is
 dependent.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@71878 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/AST/DeclCXX.h |  3 ++-
 lib/AST/DeclCXX.cpp         |  6 ++++--
 lib/Sema/SemaTemplate.cpp   | 11 ++++++++++-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/include/clang/AST/DeclCXX.h b/include/clang/AST/DeclCXX.h
index 88d6f9fa2b..28a6f2d367 100644
--- a/include/clang/AST/DeclCXX.h
+++ b/include/clang/AST/DeclCXX.h
@@ -264,7 +264,8 @@ public:
 
   static CXXRecordDecl *Create(ASTContext &C, TagKind TK, DeclContext *DC,
                                SourceLocation L, IdentifierInfo *Id,
-                               CXXRecordDecl* PrevDecl=0);
+                               CXXRecordDecl* PrevDecl=0,
+                               bool DelayTypeCreation = false);
   
   /// setBases - Sets the base classes of this struct or class.
   void setBases(CXXBaseSpecifier const * const *Bases, unsigned NumBases);
diff --git a/lib/AST/DeclCXX.cpp b/lib/AST/DeclCXX.cpp
index c32aefb830..361fef0325 100644
--- a/lib/AST/DeclCXX.cpp
+++ b/lib/AST/DeclCXX.cpp
@@ -35,9 +35,11 @@ CXXRecordDecl::CXXRecordDecl(Kind K, TagKind TK, DeclContext *DC,
 
 CXXRecordDecl *CXXRecordDecl::Create(ASTContext &C, TagKind TK, DeclContext *DC,
                                      SourceLocation L, IdentifierInfo *Id,
-                                     CXXRecordDecl* PrevDecl) {
+                                     CXXRecordDecl* PrevDecl,
+                                     bool DelayTypeCreation) {
   CXXRecordDecl* R = new (C) CXXRecordDecl(CXXRecord, TK, DC, L, Id);
-  C.getTypeDeclType(R, PrevDecl);  
+  if (!DelayTypeCreation)
+    C.getTypeDeclType(R, PrevDecl);  
   return R;
 }
 
diff --git a/lib/Sema/SemaTemplate.cpp b/lib/Sema/SemaTemplate.cpp
index 09e32f7b65..afd801cf61 100644
--- a/lib/Sema/SemaTemplate.cpp
+++ b/lib/Sema/SemaTemplate.cpp
@@ -509,7 +509,8 @@ Sema::ActOnClassTemplate(Scope *S, unsigned TagSpec, TagKind TK,
   CXXRecordDecl *NewClass = 
     CXXRecordDecl::Create(Context, Kind, SemanticContext, NameLoc, Name,
                           PrevClassTemplate? 
-                            PrevClassTemplate->getTemplatedDecl() : 0);
+                            PrevClassTemplate->getTemplatedDecl() : 0,
+                          /*DelayTypeCreation=*/true);
 
   ClassTemplateDecl *NewTemplate
     = ClassTemplateDecl::Create(Context, SemanticContext, NameLoc,
@@ -517,6 +518,14 @@ Sema::ActOnClassTemplate(Scope *S, unsigned TagSpec, TagKind TK,
                                 NewClass, PrevClassTemplate);
   NewClass->setDescribedClassTemplate(NewTemplate);
 
+  // Build the type for the class template declaration now.
+  QualType T = 
+    Context.getTypeDeclType(NewClass, 
+                            PrevClassTemplate? 
+                              PrevClassTemplate->getTemplatedDecl() : 0);  
+  assert(T->isDependentType() && "Class template type is not dependent?");
+  (void)T;
+
   // Set the access specifier.
   SetMemberAccessSpecifier(NewTemplate, PrevClassTemplate, AS);
   
-- 
2.40.0