Fixed crash and added a test and a minor output problem

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162110 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Tooling/clang-check-ast-dump.cpp b/test/Tooling/clang-check-ast-dump.cpp
index e29072b..28dcc6e 100644
--- a/test/Tooling/clang-check-ast-dump.cpp
+++ b/test/Tooling/clang-check-ast-dump.cpp
@@ -37,4 +37,7 @@
   int n __attribute__((aligned(1+1)));
 };
 
+// Used to fail with -ast-dump-filter X
+template<template<typename T> class C> class Z {};
+
 }