--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/Index/index-refs.m	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,32 @@
+
+@class Protocol;
+
+@protocol Prot
+@end
+
+struct FooS {
+  int x;
+};
+
+void foo() {
+  Protocol *p = @protocol(Prot);
+  @encode(struct FooS);
+}
+
+@interface I
++(void)clsMeth;
+@end
+
+void foo2() {
+  [I clsMeth];
+}
+
+@protocol ForwardProt;
+
+// RUN: c-index-test -index-file %s | FileCheck %s
+// CHECK: [indexEntityReference]: kind: objc-protocol | name: Prot | {{.*}} | loc: 12:27
+// CHECK: [indexEntityReference]: kind: struct | name: FooS | {{.*}} | loc: 13:18
+// CHECK: [indexEntityReference]: kind: objc-class | name: I | {{.*}} | loc: 21:4
+
+// CHECK: [indexDeclaration]: kind: objc-protocol | name: ForwardProt | {{.*}} | loc: 24:11
+// CHECK-NEXT: <ObjCContainerInfo>: kind: forward-ref