diff --git a/clang/lib/Sema/SemaInit.cpp b/clang/lib/Sema/SemaInit.cpp
--- a/clang/lib/Sema/SemaInit.cpp
+++ b/clang/lib/Sema/SemaInit.cpp
@@ -1831,6 +1831,8 @@
   auto *CXXRD = ElementType->getAsCXXRecordDecl();
   if (!CXXRD)
     return false;
+  if (!CXXRD->isCompleteDefinition())
+    return false;
 
   CXXDestructorDecl *Destructor = SemaRef.LookupDestructor(CXXRD);
   SemaRef.CheckDestructorAccess(Loc, Destructor,
diff --git a/clang/test/SemaCXX/cxx0x-initializer-aggregates.cpp b/clang/test/SemaCXX/cxx0x-initializer-aggregates.cpp
--- a/clang/test/SemaCXX/cxx0x-initializer-aggregates.cpp
+++ b/clang/test/SemaCXX/cxx0x-initializer-aggregates.cpp
@@ -133,3 +133,11 @@
 namespace PR24816 {
   struct { int i; } ne = {{0, 1}}; // expected-error{{excess elements in scalar initializer}}
 }
+
+namespace no_crash {
+template <class T>
+class Foo {};
+void test(int foo) {
+  Foo<int> array[foo] = {0}; // expected-error {{variable-sized object may not be initialized}}
+}
+}