Initial commit: Go 1.23 release state

test/typeparam/issue51233.go

@@ -0,0 +1,28 @@
+// errorcheck
+
+// Copyright 2022 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
+
+// As of issue #51527, type-type inference has been disabled.
+
+type RC[RG any] interface {
+	~[]RG
+}
+
+type Fn[RCT RC[RG], RG any] func(RCT)
+
+type FFn[RCT RC[RG], RG any] func() Fn[RCT] // ERROR "not enough type arguments for type Fn: have 1, want 2"
+
+type F[RCT RC[RG], RG any] interface {
+	Fn() Fn[RCT] // ERROR "not enough type arguments for type Fn: have 1, want 2"
+}
+
+type concreteF[RCT RC[RG], RG any] struct {
+	makeFn FFn[RCT] // ERROR "not enough type arguments for type FFn: have 1, want 2"
+}
+
+func (c *concreteF[RCT, RG]) Fn() Fn[RCT] { // ERROR "not enough type arguments for type Fn: have 1, want 2"
+	return c.makeFn()
+}