jackc/pgx · error · ErrInsufficientBytes

%w: %d needed at offset %d, %d remain

Error message

%w: %d needed at offset %d, %d remain

What it means

Error "%w: %d needed at offset %d, %d remain" thrown in jackc/pgx.

Source

Thrown at internal/pgio/read.go:57

// need reports whether n more bytes are available, recording an error if not.
//
// The error is built by failShort rather than here so that need stays within
// the inliner's budget. Reads of fixed-size values are the hottest path in the
// driver, and an un-inlined bounds check costs more than the read itself.
func (r *Reader) need(n int) bool {
	if r.err != nil {
		return false
	}
	if len(r.s)-r.rp < n {
		r.failShort(n)
		return false
	}
	return true
}

func (r *Reader) failShort(n int) {
	r.fail(fmt.Errorf("%w: %d needed at offset %d, %d remain", ErrInsufficientBytes, n, r.rp, len(r.s)-r.rp))
}

// Err returns the first error encountered, if any.
func (r *Reader) Err() error {
	return r.err
}

// Remaining returns the number of unread bytes.
func (r *Reader) Remaining() int {
	return len(r.s) - r.rp
}

func (r *Reader) Byte() byte {
	if !r.need(1) {
		return 0
	}
	b := r.s[r.rp]
	r.rp += 1

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at internal/pgio/read.go:57 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/b6ccef3685d06849.json. Report an issue: GitHub.