fix(go_indexer): visit anon members in struct type (#5734)

kythe/go/indexer/emit.go

@@ -198,6 +198,8 @@ func (pi *PackageInfo) Emit(ctx context.Context, sink Sink, opts *EmitOptions) e
 				e.visitIndexExpr(n, stack)
 			case *ast.IndexListExpr:
 				e.visitIndexListExpr(n, stack)
+			case *ast.ArrayType:
+				e.visitArrayType(n, stack)
 			}
 			return true
 		}), file)
@@ -830,6 +832,11 @@ func (e *emitter) visitIndexListExpr(expr *ast.IndexListExpr, stack stackFunc) {
 	}
 }
 
+// visitArrayType handles references to array types.
+func (e *emitter) visitArrayType(expr *ast.ArrayType, stack stackFunc) {
+	e.emitAnonMembers(expr.Elt)
+}
+
 // emitPosRef emits an anchor spanning loc, pointing to obj.
 func (e *emitter) emitPosRef(loc ast.Node, obj types.Object, kind string) {
 	target := e.pi.ObjectVName(obj)

kythe/go/indexer/testdata/structinit.go

@@ -88,3 +88,25 @@ func realNames() {
 		{nick: "kyle"},
 	}
 }
+
+func anonSlice() {
+	type S = struct{ N string }
+	_ = []struct {
+		//- @F defines/binding F
+		F string
+
+		A []S
+	}{
+		{
+			//- @F ref/writes F
+			F: "",
+
+			//- @N defines/binding N
+			A: []struct{ N string }{
+				// TODO: tie anon field back to original def
+				//- @N ref/writes N
+				{N: ""},
+			},
+		},
+	}
+}