jackc/pgx · error · ErrInsufficientBytes

%w: unterminated string at offset %d

Error message

%w: unterminated string at offset %d

What it means

Error "%w: unterminated string at offset %d" thrown in jackc/pgx.

Source

Thrown at internal/pgio/read.go:142

	}
	if !r.need(n) {
		return nil
	}
	b := r.s[r.rp : r.rp+n]
	r.rp += n
	return b
}

// CString reads a NUL-terminated string, returning the bytes before the
// terminator and consuming the terminator. The returned slice aliases the
// source; it is not a copy.
func (r *Reader) CString() []byte {
	if r.err != nil {
		return nil
	}
	i := bytes.IndexByte(r.s[r.rp:], 0)
	if i < 0 {
		r.fail(fmt.Errorf("%w: unterminated string at offset %d", ErrInsufficientBytes, r.rp))
		return nil
	}
	b := r.s[r.rp : r.rp+i]
	r.rp += i + 1
	return b
}

// Count reads an int32 element count and validates it against the remaining
// bytes: the count must be non-negative, and since each element occupies at
// least minElemSize bytes, count*minElemSize must not exceed the remaining
// message. This bounds allocations sized from the count against a malicious
// or corrupt message claiming a huge count. Returns 0 on any failure.
func (r *Reader) Count(minElemSize int) int {
	offset := r.rp
	count := int(r.Int32())
	if r.err != nil {
		return 0
	}

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at internal/pgio/read.go:142 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/abae88d269924e9a.json. Report an issue: GitHub.