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

[Vladimir Serbinenko]

Follow-up Comment #1, bug #28422 (project grub):

This patch is inappropriate. It introduces arbitrary limit on pathlen even on
platforms that aren't limited in this way (e.g. GNU/Hurd). If you make a patch
with something like:
#ifdef __NetBSD__
p = xmalloc (PATH_MAX);
realpath (path, p);
#else
p = realpath (path, NULL);
#endif
Then we'll probably accept it

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