[issue8592] 'y' does not check for embedded NUL bytes

[STINNER Victor]

STINNER Victor <victor.stinner at haypocalc.com> added the comment:

Same issue for y#:

y# (...) This variant on s# doesn’t accept Unicode objects, only bytes-like objects.

s# (...) The string may contain embedded null bytes.

--

y* might mention that it accepts embedded null bytes.

--

grep 'PyArg_Parse[^"]\+"[^:;)"]*y[^*]' */*.c finds only usage of y# (no usage of y format):

 - mmap_gfind(), mmap_write_method()
 - oss_write(), oss_writeall()
 - in getsockaddrarg() with s->sock_family==AF_PACKET
 - in sock_setsockopt() if the option name is a string
 - socket_inet_ntoa(), socket_inet_ntop()

These functions have to support embedded null bytes. So I think that y# should specify explicitly that embedded null bytes are accepted.

----------
nosy: +haypo

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue8592>
_______________________________________