[bug #28422] [util/misc.c] realpath(path, NULL) leads to segfault

[Grégoire Sutre]

Follow-up Comment #5, bug #28422 (project grub):

Hi Robert,

It's not bothering me at all, no problem :-)

The patch you sent almost works, there was just a missing #include <limits.h>
(for PATH_MAX).  I attach a new version of the patch with this include.

I looked at the rest of the code, and the only other place where realpath is
used outside of an ifdef __linux__ is in util/ieee1275/ofpath.c, but there the
result buffer is pre-allocated (with xmalloc (PATH_MAX)).


(file #19381)
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