From e656b8397f05fd1b7c4a735372f79a52f4e32be5 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Mon, 23 Apr 2012 16:42:52 +0000
Subject: [PATCH] Teach RequireCompleteType about multi-dimensional arrays.
 Fixes <rdar://problem/11284902>.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@155356 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Sema/SemaType.cpp             | 3 ++-
 test/SemaObjCXX/ivar-construct.mm | 8 ++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/Sema/SemaType.cpp b/lib/Sema/SemaType.cpp
index d0906ded0c..1b95f05c79 100644
--- a/lib/Sema/SemaType.cpp
+++ b/lib/Sema/SemaType.cpp
@@ -4195,7 +4195,8 @@ bool Sema::RequireCompleteType(SourceLocation Loc, QualType T,
   // class template specialization, or an array with known size of such,
   // try to instantiate it.
   QualType MaybeTemplate = T;
-  if (const ConstantArrayType *Array = Context.getAsConstantArrayType(T))
+  while (const ConstantArrayType *Array
+           = Context.getAsConstantArrayType(MaybeTemplate))
     MaybeTemplate = Array->getElementType();
   if (const RecordType *Record = MaybeTemplate->getAs<RecordType>()) {
     if (ClassTemplateSpecializationDecl *ClassTemplateSpec
diff --git a/test/SemaObjCXX/ivar-construct.mm b/test/SemaObjCXX/ivar-construct.mm
index 535d2a0217..a066fca359 100644
--- a/test/SemaObjCXX/ivar-construct.mm
+++ b/test/SemaObjCXX/ivar-construct.mm
@@ -27,3 +27,11 @@ struct Z; // expected-note{{forward declaration}}
 
 @implementation B
 @end
+
+// <rdar://problem/11284902>
+template<typename T> struct Incomplete; // expected-note{{declared here}}
+
+@interface C {
+  Incomplete<int> a[4][4][4]; // expected-error{{implicit instantiation of undefined template 'Incomplete<int>'}}
+}
+@end
-- 
2.40.0