You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: conversions_notwindows.go
    path of file: ./repos/darktile/vendor/github.com/hajimehoshi/ebiten/v2/internal/graphicsdriver/opengl/gl
    
    the code of the file until where you have to start completion: // SPDX-License-Identifier: MIT

//go:build !windows
// +build !windows

package gl

import (
	"unsafe"
)

// #include <stdlib
    
func Strs(strs ...string) (cstrs **uint8, free func()) {
	if len(strs) == 0 {
		panic("Strs: expected at least 1 string")
	}

	css := make([]*uint8, 0, len(strs))
	for _, str := range strs {
		cs := C.CString(str)
		css = append(css, (*uint8)(unsafe.Pointer(cs)))
	}

	return (**uint8)(&css[0]), func() {
		for _, cs := range css {
			C.free(unsafe.Pointer(cs))
		}
	}
}