[issue1298813] sysmodule.c: realpath() is unsafe

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

The latest POSIX versions (*) allow NULL to be passed for the target memory area, meaning that realpath() will allocate as much memory as necessary by itself. This essentially does the same thing as canonicalize_file_name(), but in a standard way rather than by relying on a GNU extension.

I suppose that possibility could be checked at configure time.

(*) http://pubs.opengroup.org/onlinepubs/9699919799/functions/realpath.html

----------
nosy: +pitrou
stage: test needed -> needs patch
versions: +Python 3.3

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1298813>
_______________________________________