mirror of https://go.googlesource.com/go
91 lines
1.3 KiB
Go
91 lines
1.3 KiB
Go
// run
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// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test the 'for range' construct ranging over integers.
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package main
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func testint1() {
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bad := false
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j := 0
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for i := range int(4) {
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if i != j {
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println("range var", i, "want", j)
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bad = true
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}
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j++
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}
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if j != 4 {
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println("wrong count ranging over 4:", j)
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bad = true
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}
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if bad {
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panic("testint1")
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}
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}
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func testint2() {
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bad := false
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j := 0
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for i := range 4 {
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if i != j {
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println("range var", i, "want", j)
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bad = true
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}
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j++
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}
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if j != 4 {
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println("wrong count ranging over 4:", j)
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bad = true
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}
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if bad {
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panic("testint2")
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}
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}
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func testint3() {
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bad := false
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type MyInt int
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j := MyInt(0)
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for i := range MyInt(4) {
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if i != j {
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println("range var", i, "want", j)
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bad = true
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}
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j++
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}
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if j != 4 {
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println("wrong count ranging over 4:", j)
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bad = true
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}
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if bad {
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panic("testint3")
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}
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}
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// Issue #63378.
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func testint4() {
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for i := range -1 {
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_ = i
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panic("must not be executed")
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}
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}
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// Issue #64471.
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func testint5() {
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for i := range 'a' {
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var _ *rune = &i // ensure i has type rune
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}
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}
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func main() {
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testint1()
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testint2()
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testint3()
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testint4()
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testint5()
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}
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