golang sig 代码
文件路径：/src/crypto/internal/boring/sig/sig.go
// Copyright 2017 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.
// Package sig holds “code signatures” that can be called
// and will result in certain code sequences being linked into
// the final binary. The functions themselves are no-ops.
package sig
// BoringCrypto indicates that the BoringCrypto module is present.
func BoringCrypto()
// FIPSOnly indicates that package crypto/tls/fipsonly is present.
func FIPSOnly()
// StandardCrypto indicates that standard Go crypto is present.
func StandardCrypto()