var runtime._cgo_unsetenv

4 uses

	runtime (current package)
		env_posix.go#L48: var _cgo_unsetenv unsafe.Pointer // pointer to C function
		env_posix.go#L65: 	if _cgo_unsetenv == nil {
		env_posix.go#L69: 	asmcgocall(_cgo_unsetenv, unsafe.Pointer(&arg))
		proc.go#L220: 			if _cgo_unsetenv == nil {