Initial commit: Go 1.23 release state

test/interface/embed2.go

@@ -0,0 +1,75 @@
+// 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 methods derived from embedded interface and *interface values.
+
+package main
+
+import "os"
+
+const Value = 1e12
+
+type Inter interface {
+	M() int64
+}
+
+type T int64
+
+func (t T) M() int64 { return int64(t) }
+
+var t = T(Value)
+var pt = &t
+var ti Inter = t
+var pti = &ti
+
+type S struct{ Inter }
+
+var s = S{ti}
+var ps = &s
+
+type SP struct{ *Inter } // ERROR "interface"
+
+var i Inter
+var pi = &i
+
+var ok = true
+
+func check(s string, v int64) {
+	if v != Value {
+		println(s, v)
+		ok = false
+	}
+}
+
+func main() {
+	check("t.M()", t.M())
+	check("pt.M()", pt.M())
+	check("ti.M()", ti.M())
+	check("pti.M()", pti.M()) // ERROR "pointer to interface, not interface|no field or method M"
+	check("s.M()", s.M())
+	check("ps.M()", ps.M())
+
+	i = t
+	check("i = t; i.M()", i.M())
+	check("i = t; pi.M()", pi.M()) // ERROR "pointer to interface, not interface|no field or method M"
+
+	i = pt
+	check("i = pt; i.M()", i.M())
+	check("i = pt; pi.M()", pi.M()) // ERROR "pointer to interface, not interface|no field or method M"
+
+	i = s
+	check("i = s; i.M()", i.M())
+	check("i = s; pi.M()", pi.M()) // ERROR "pointer to interface, not interface|no field or method M"
+
+	i = ps
+	check("i = ps; i.M()", i.M())
+	check("i = ps; pi.M()", pi.M()) // ERROR "pointer to interface, not interface|no field or method M"
+
+	if !ok {
+		println("BUG: interface10")
+		os.Exit(1)
+	}
+}