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55 lines
979 B
55 lines
979 B
4 months ago
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// run
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// Copyright 2020 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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// Make sure runtime.panicmakeslice* are called.
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package main
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import "strings"
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func main() {
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// Test typechecking passes if len is valid
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// but cap is out of range for len's type.
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var x byte
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_ = make([]int, x, 300)
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capOutOfRange := func() {
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i := 2
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s := make([]int, i, 1)
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s[0] = 1
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}
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lenOutOfRange := func() {
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i := -1
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s := make([]int, i, 3)
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s[0] = 1
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}
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tests := []struct {
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f func()
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panicStr string
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}{
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{capOutOfRange, "cap out of range"},
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{lenOutOfRange, "len out of range"},
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}
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for _, tc := range tests {
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shouldPanic(tc.panicStr, tc.f)
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}
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}
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func shouldPanic(str string, f func()) {
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defer func() {
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err := recover()
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runtimeErr := err.(error).Error()
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if !strings.Contains(runtimeErr, str) {
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panic("got panic " + runtimeErr + ", want " + str)
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}
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}()
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f()
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}
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