[New-bugs-announce] [issue29649] struct.pack_into check boundary error message didn't respect offset

[Louie Lu]

New submission from Louie Lu:

For this situation, check boundary error message didn't correctly show out.

>>> import struct
>>> import ctypes
>>> byte_list = ctypes.create_string_buffer(1)
>>> struct.pack_into('b', byte_list, 5, 1)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
struct.error: pack_into requires a buffer of at least 1 bytes

Since offset is setting at 5, it should at least need `offset + soself->s_size` bytes to store it.

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components: Extension Modules
messages: 288564
nosy: louielu
priority: normal
severity: normal
status: open
title: struct.pack_into check boundary error message didn't respect offset
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29649>
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