[modules] Handle defining a class template on top of an existing imported-but-not-visible definition.

llvm-svn: 233341
diff --git a/clang/test/Modules/submodules-merge-defs.cpp b/clang/test/Modules/submodules-merge-defs.cpp
index 48d4feb..9b5b13d 100644
--- a/clang/test/Modules/submodules-merge-defs.cpp
+++ b/clang/test/Modules/submodules-merge-defs.cpp
@@ -1,5 +1,5 @@
 // RUN: rm -rf %t
-// RUN: %clang_cc1 -x c++ -fmodules-cache-path=%t -fmodules -I %S/Inputs/submodules-merge-defs %s -verify -fno-modules-error-recovery
+// RUN: %clang_cc1 -x c++ -std=c++11 -fmodules-cache-path=%t -fmodules -I %S/Inputs/submodules-merge-defs %s -verify -fno-modules-error-recovery
 
 // Trigger import of definitions, but don't make them visible.
 #include "empty.h"
@@ -7,7 +7,22 @@
 A pre_a; // expected-error {{must be imported}} expected-error {{must use 'struct'}}
 // expected-note@defs.h:1 {{here}}
 
+B::Inner2 pre_bi; // expected-error +{{must be imported}}
+// expected-note@defs.h:4 +{{here}}
+// expected-note@defs.h:10 +{{here}}
+
+C_Base<1> pre_cb1; // expected-error +{{must be imported}}
+// expected-note@defs.h:13 +{{here}}
+C1 pre_c1; // expected-error +{{must be imported}} expected-error {{must use 'struct'}}
+// expected-note@defs.h:15 +{{here}}
+C2 pre_c2; // expected-error +{{must be imported}} expected-error {{must use 'struct'}}
+// expected-note@defs.h:16 +{{here}}
+
 // Make definitions from second module visible.
 #include "import-and-redefine.h"
 
 A post_a;
+B::Inner2 post_bi;
+C_Base<1> post_cb1;
+C1 c1;
+C2 c2;