Initial commit: Go 1.23 release state

test/interface/pointer.go

@@ -0,0 +1,37 @@
+// errorcheck
+
+// Copyright 2009 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.
+
+// Test that interface{M()} = *interface{M()} produces a compiler error.
+// Does not compile.
+
+package main
+
+type Inst interface {
+	Next() *Inst
+}
+
+type Regexp struct {
+	code  []Inst
+	start Inst
+}
+
+type Start struct {
+	foo *Inst
+}
+
+func (start *Start) Next() *Inst { return nil }
+
+func AddInst(Inst) *Inst {
+	print("ok in addinst\n")
+	return nil
+}
+
+func main() {
+	print("call addinst\n")
+	var _ Inst = AddInst(new(Start)) // ERROR "pointer to interface|incompatible type"
+	print("return from  addinst\n")
+	var _ *Inst = new(Start) // ERROR "pointer to interface|incompatible type"
+}