1// Copyright 2020 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build compiler_bootstrap
6
7package strconv
8
9// index returns the index of the first instance of c in s, or -1 if missing.
10func index(s string, c byte) int {
11	for i := 0; i < len(s); i++ {
12		if s[i] == c {
13			return i
14		}
15	}
16	return -1
17}
18