1 files changed, 15 insertions, 0 deletions
diff --git a/contrib/go/_std_1.18/src/strconv/bytealg.go b/contrib/go/_std_1.18/src/strconv/bytealg.go
new file mode 100644
index 00000000000..a2bb12c5f21
--- /dev/null
+++ b/contrib/go/_std_1.18/src/strconv/bytealg.go
@@ -0,0 +1,15 @@
+// Copyright 2009 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.
+
+//go:build !compiler_bootstrap
+// +build !compiler_bootstrap
+
+package strconv
+
+import "internal/bytealg"
+
+// index returns the index of the first instance of c in s, or -1 if missing.
+func index(s string, c byte) int {
+	return bytealg.IndexByteString(s, c)
+}