[Nano-devel] unlink(NULL) can crash

[David Benbennick]

The man page for unlink() doesn't specify whether it accepts NULL.  If you 
try to write to an unwritable file, in files.c:write_file(), Nano calls
        unlink(tempname)
but tempname has been set only in prepend mode.

The glibc version of unlink() doesn't have any problem with NULL.  But 
when I tried to use a different library (libtrash), Nano crashed.  Here's 
a patch.

I bet there are other system calls that need to be protected in the same 
way.

unlink.patch
Description: Text document

pgpXPEOhmiKz9.pgp
Description: PGP signature