`ValueError: glog(0)` when encoding binary data with null bytes at capacity limit in MODE_8BIT_BYTE

[esolment]

When encoding binary data that fills the QR code capacity exactly and ends with null bytes (\x00), qr.make() raises ValueError: glog(0) inside the Reed-Solomon implementation. This is a bug — MODE_8BIT_BYTE must handle any byte value including 0x00 per ISO 18004.

Minimal reproducible example

import qrcode
from qrcode.util import QRData, MODE_8BIT_BYTE
from qrcode.constants import ERROR_CORRECT_Q

# Version 5 + Q = 60 bytes capacity
data = b'\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x16Hello from kakaworld!!\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'
assert len(data) == 60  # exactly at capacity

qr = qrcode.QRCode(version=5, error_correction=ERROR_CORRECT_Q)
qr.add_data(QRData(data, mode=MODE_8BIT_BYTE))
qr.make(fit=False)  # ValueError: glog(0)

Traceback

File ".../qrcode/base.py", line 236, in glog
    raise ValueError(f"glog({n})")
ValueError: glog(0)

Environment

• qrcode[pil] 8.2
• Python 3.12.3