// Copyright 2019 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package usermem

import (
	"unsafe"
)

// stringFromImmutableBytes is equivalent to string(bs), except that it never
// copies even if escape analysis can't prove that bs does not escape. This is
// only valid if bs is never mutated after stringFromImmutableBytes returns.
func stringFromImmutableBytes(bs []byte) string {
	// Compare strings.Builder.String().
	return *(*string)(unsafe.Pointer(&bs))
}