var runtime._cgo_clearenv

3 uses

	runtime (current package)
		runtime_clearenv.go#L11: var _cgo_clearenv unsafe.Pointer // pointer to C function
		runtime_clearenv.go#L15: 	if _cgo_clearenv == nil {
		runtime_clearenv.go#L18: 	asmcgocall(_cgo_clearenv, nil)