Initial commit: Go 1.23 release state

test/rename.go

@@ -0,0 +1,103 @@
+// run
+
+// 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 predeclared names can be redeclared by the user.
+
+package main
+
+import (
+	"fmt"
+	"runtime"
+)
+
+func main() {
+	n :=
+		append +
+			bool +
+			byte +
+			complex +
+			complex64 +
+			complex128 +
+			cap +
+			close +
+			delete +
+			error +
+			false +
+			float32 +
+			float64 +
+			imag +
+			int +
+			int8 +
+			int16 +
+			int32 +
+			int64 +
+			len +
+			make +
+			new +
+			nil +
+			panic +
+			print +
+			println +
+			real +
+			recover +
+			rune +
+			string +
+			true +
+			uint +
+			uint8 +
+			uint16 +
+			uint32 +
+			uint64 +
+			uintptr +
+			iota
+	if n != NUM*(NUM-1)/2 {
+		fmt.Println("BUG: wrong n", n, NUM*(NUM-1)/2)
+		runtime.Breakpoint() // panic is inaccessible
+	}
+}
+
+const (
+	// cannot use iota here, because iota = 38 below
+	append     = 1
+	bool       = 2
+	byte       = 3
+	complex    = 4
+	complex64  = 5
+	complex128 = 6
+	cap        = 7
+	close      = 8
+	delete     = 9
+	error      = 10
+	false      = 11
+	float32    = 12
+	float64    = 13
+	imag       = 14
+	int        = 15
+	int8       = 16
+	int16      = 17
+	int32      = 18
+	int64      = 19
+	len        = 20
+	make       = 21
+	new        = 22
+	nil        = 23
+	panic      = 24
+	print      = 25
+	println    = 26
+	real       = 27
+	recover    = 28
+	rune       = 29
+	string     = 30
+	true       = 31
+	uint       = 32
+	uint8      = 33
+	uint16     = 34
+	uint32     = 35
+	uint64     = 36
+	uintptr    = 37
+	iota       = 38
+	NUM        = 39
+)