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