Initial commit: Go 1.23 release state

test/alias1.go

@@ -0,0 +1,54 @@
+// run
+
+// Copyright 2011 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 dynamic interface checks treat byte=uint8
+// and rune=int or rune=int32.
+
+package main
+
+func main() {
+	var x interface{}
+
+	x = byte(1)
+	switch x.(type) {
+	case uint8:
+		// ok
+	default:
+		panic("byte != uint8")
+	}
+
+	x = uint8(2)
+	switch x.(type) {
+	case byte:
+		// ok
+	default:
+		panic("uint8 != byte")
+	}
+
+	rune32 := false
+	x = rune(3)
+	switch x.(type) {
+	case int:
+		// ok
+	case int32:
+		// must be new code
+		rune32 = true
+	default:
+		panic("rune != int and rune != int32")
+	}
+
+	if rune32 {
+		x = int32(4)
+	} else {
+		x = int(5)
+	}
+	switch x.(type) {
+	case rune:
+		// ok
+	default:
+		panic("int (or int32) != rune")
+	}
+}