[libclang] Fix indexing type alias declarations. rdar://11878406

llvm-svn: 163072
diff --git a/clang/test/Index/index-file.cpp b/clang/test/Index/index-file.cpp
new file mode 100644
index 0000000..bf2d62c
--- /dev/null
+++ b/clang/test/Index/index-file.cpp
@@ -0,0 +1,6 @@
+using MyTypeAlias = int;
+
+// RUN: c-index-test -index-file %s > %t
+// RUN: FileCheck %s -input-file=%t
+
+// CHECK: [indexDeclaration]: kind: type-alias | name: MyTypeAlias | {{.*}} | loc: 1:7