Initial commit: Go 1.23 release state

test/typeparam/issue50417.go

@@ -0,0 +1,146 @@
+// run
+
+// 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 main
+
+func main() {}
+
+// Field accesses through type parameters are disabled
+// until we have a more thorough understanding of the
+// implications on the spec. See issue #51576.
+
+/*
+type Sf struct {
+	f int
+}
+
+func f0[P Sf](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+func f0t[P ~struct{ f int }](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f0[Sf]
+var _ = f0t[Sf]
+
+func f1[P interface {
+	~struct{ f int }
+	m()
+}](p P) {
+	_ = p.f
+	p.f = 0
+	p.m()
+}
+
+var _ = f1[Sfm]
+
+type Sm struct{}
+
+func (Sm) m() {}
+
+type Sfm struct {
+	f int
+}
+
+func (Sfm) m() {}
+
+func f2[P interface {
+	Sfm
+	m()
+}](p P) {
+	_ = p.f
+	p.f = 0
+	p.m()
+}
+
+var _ = f2[Sfm]
+
+// special case: core type is a named pointer type
+
+type PSfm *Sfm
+
+func f3[P interface{ PSfm }](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f3[PSfm]
+
+// special case: core type is an unnamed pointer type
+
+func f4[P interface{ *Sfm }](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f4[*Sfm]
+
+type A int
+type B int
+type C float64
+
+type Int interface {
+	*Sf | A
+	*Sf | B
+}
+
+func f5[P Int](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f5[*Sf]
+
+type Int2 interface {
+	*Sf | A
+	any
+	*Sf | C
+}
+
+func f6[P Int2](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f6[*Sf]
+
+type Int3 interface {
+	Sf
+	~struct{ f int }
+}
+
+func f7[P Int3](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f7[Sf]
+
+type Em1 interface {
+	*Sf | A
+}
+
+type Em2 interface {
+	*Sf | B
+}
+
+type Int4 interface {
+	Em1
+	Em2
+	any
+}
+
+func f8[P Int4](p P) {
+	_ = p.f
+	p.f = 0
+}
+
+var _ = f8[*Sf]
+*/