inancgumus/learngo · error

incorrect field -> %q = %q

Error message

incorrect field -> %q = %q

What it means

field.uatoi is an error-collecting helper used in functional-style parsing: it tries strconv.Atoi on a named field value and, if conversion fails or the number is negative, stores this error in f.err (to be checked later) while returning 0. It fires on malformed or negative numeric fields, e.g. a visits or uniques column like "-3" or "abc" in a log line.

Source

Thrown at logparser/functional/field.go:26

// uatoi parses an unsigned integer string and saves the error.
// it assumes that the val is unsigned.
// for ease of usability: it returns an int instead of uint.
func (f *field) uatoi(name, val string) int {
	n, err := strconv.Atoi(val)
	if err != nil || n < 0 {
		f.err = fmt.Errorf("incorrect field -> %q = %q", name, val)
	}
	return n
}

View on GitHub (pinned to 3c475a78e5)

Solutions

1. After parsing a line, check f.err != nil and reject or skip the record.
2. Validate the field is a non-negative integer before calling uatoi.
3. Fix the log data so the named field holds a valid unsigned integer.

When it happens

Trigger: Thrown at logparser/functional/field.go:26 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of inancgumus/learngo@3c475a78e5 (2026-09-02). Data as JSON: /api/errors/71dd7ba903a82e46. Report an issue: GitHub.