golangci/golangci-lint · error

can't get file %s bytes from cache: %w

Error message

can't get file %s bytes from cache: %w

What it means

Wrapping error in LineCache.getFileCache: FileCache.GetFileBytes failed while loading the file's bytes (file missing/unreadable — see the wrapped os error). The line lookup aborts since the file content cannot be split into a line cache.

Source

Thrown at pkg/fsutils/linecache.go:62

		return nil, fmt.Errorf("invalid file line index0 < 0: %d", index0)
	}

	if index0 >= len(fc) {
		return nil, fmt.Errorf("invalid file line index0 (%d) >= len(fc) (%d)", index0, len(fc))
	}

	return fc[index0], nil
}

func (lc *LineCache) getFileCache(filePath string) (fileLinesCache, error) {
	loadedFc, ok := lc.files.Load(filePath)
	if ok {
		return loadedFc.(fileLinesCache), nil
	}

	fileBytes, err := lc.fileCache.GetFileBytes(filePath)
	if err != nil {
		return nil, fmt.Errorf("can't get file %s bytes from cache: %w", filePath, err)
	}

	fc := bytes.Split(fileBytes, []byte("\n"))
	lc.files.Store(filePath, fileLinesCache(fc))
	return fc, nil
}

View on GitHub (pinned to ed7a235d2d)

Solutions

1. Verify the file exists and is readable at the reported path
2. Check the wrapped underlying error for the exact read failure
3. Ensure working-directory/relative-path resolution is correct

When it happens

Trigger: Thrown at pkg/fsutils/linecache.go:62 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of golangci/golangci-lint@ed7a235d2d (2026-09-02). Data as JSON: /api/errors/568bc9870edbb746. Report an issue: GitHub.