golang/go · error

zip: cannot add non-regular file

Error message

zip: cannot add non-regular file

What it means

Error "zip: cannot add non-regular file" thrown in golang/go.

Source

Thrown at src/archive/zip/writer.go:576

}

// AddFS adds the files from fs.FS to the archive.
// It walks the directory tree starting at the root of the filesystem
// adding each file to the zip using deflate while maintaining the directory structure.
func (w *Writer) AddFS(fsys fs.FS) error {
	return fs.WalkDir(fsys, ".", func(name string, d fs.DirEntry, err error) error {
		if err != nil {
			return err
		}
		if name == "." {
			return nil
		}
		info, err := d.Info()
		if err != nil {
			return err
		}
		if !d.IsDir() && !info.Mode().IsRegular() {
			return errors.New("zip: cannot add non-regular file")
		}
		h, err := FileInfoHeader(info)
		if err != nil {
			return err
		}
		h.Name = name
		if d.IsDir() {
			h.Name += "/"
		}
		h.Method = Deflate
		fw, err := w.CreateHeader(h)
		if err != nil {
			return err
		}
		if d.IsDir() {
			return nil
		}
		f, err := fsys.Open(name)

View on GitHub (pinned to b6b368adc5)

When it happens

Trigger: Thrown at src/archive/zip/writer.go:576 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of golang/go@b6b368adc5 (2026-08-12). Data as JSON: /api/errors/79f7edd075f6a92e. Report an issue: GitHub.