Pretty printing and improved representation for namespace alias declarations

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72616 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Coverage/cxx-language-features.inc b/test/Coverage/cxx-language-features.inc
index 92c9fd6..bac6bc7 100644
--- a/test/Coverage/cxx-language-features.inc
+++ b/test/Coverage/cxx-language-features.inc
@@ -10,3 +10,5 @@
 
 using namespace std::debug;
 using namespace std;
+
+namespace safestl = ::std::debug;