golang cgocallback 代码
文件路径：/src/runtime/cgocallback.go
/ Copyright 2011 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 runtime
/ These functions are called from C code via cgo/callbacks.go.
/ Panic.
func _cgo_panic_internal(p *byte) {
panic(gostringnocopy(p))
}