[bug-grep] [patch #3832] fix savedir issue for gnulib import

[Paul Eggert]

Follow-up Comment #3, patch #3832 (project grep):

You were better off omitting the size parameter, and staying
compatible with gnulib.  That is because POSIX says that the value
of st_size is undefined for directories, and we've encountered
hosts where st_size is effectively garbage.  If you try to invoke
malloc with a garbage argument, you're likely to allocate wayyyy
too much storage and break your program one way or another.

So I would stick with the gnulib approach here.


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