Initial commit: Go 1.23 release state

test/fixedbugs/issue41575.go

@@ -0,0 +1,36 @@
+// errorcheck
+
+// Copyright 2020 The Go Authors. All rights reserved.  Use of this
+// source code is governed by a BSD-style license that can be found in
+// the LICENSE file.
+
+package p
+
+type T1 struct { // ERROR "invalid recursive type T1\n\tLINE: T1 refers to\n\tLINE+4: T2 refers to\n\tLINE: T1$|invalid recursive type"
+	f2 T2
+}
+
+type T2 struct { // GCCGO_ERROR "invalid recursive type"
+	f1 T1
+}
+
+type a b // GCCGO_ERROR "invalid recursive type"
+type b c // ERROR "invalid recursive type b\n\tLINE: b refers to\n\tLINE+1: c refers to\n\tLINE: b$|invalid recursive type"
+type c b // GCCGO_ERROR "invalid recursive type"
+
+type d e
+type e f
+type f f // ERROR "invalid recursive type f\n\tLINE: f refers to\n\tLINE: f$|invalid recursive type"
+
+type g struct { // ERROR "invalid recursive type g\n\tLINE: g refers to\n\tLINE: g$|invalid recursive type"
+	h struct {
+		g
+	}
+}
+
+type w x
+type x y           // ERROR "invalid recursive type x\n\tLINE: x refers to\n\tLINE+1: y refers to\n\tLINE+2: z refers to\n\tLINE: x$|invalid recursive type"
+type y struct{ z } // GCCGO_ERROR "invalid recursive type"
+type z [10]x
+
+type w2 w // refer to the type loop again