var io/fs.ErrClosed

3 uses

	io/fs (current package)
		fs.go#L141: 	ErrClosed     = errClosed()     // "file already closed"

	net/http
		h2_bundle.go#L10170: 	gz.zerr = fs.ErrClosed

	os
		error.go#L24: 	ErrClosed     = fs.ErrClosed     // "file already closed"