descriptors against -1 (as appropriate).
* add actual checks which to detect stuff that would trigger_DIAGASSERT(),
and attempt to return a sane error condition.
* knf some code
* remove some `register' decls.
the first two items result in the addition of code similar to the
following in various functions:
_DIAGASSERT(path != NULL)
#ifdef _DIAGNOSTIC
if (path == NULL) {
errno = EFAULT;
return (-1);
}
#endif
* There was an off-by-one error that caused the addition of a NUL or slash in fts_build() to
overwrite other memory.
* After fts_palloc(), we need to reset `cp' so that it points to the new path name buffer;
otherwise the addition of the file name before calling fts_stat() could lose.
Also, fix stupidity in the fts_palloc() interface. We don't want N bytes more than the
current buffer size; we want N bytes more than the current length. Just pass in the new
size, since we can't figure it out easily here.
* When not using FTS_NOCHDIR, fts_accpath == fts_name. fts_padjust should not
try to move fts_accpath in this case.
* Previous entries at the same level also need to be adjusted.
* A bug was introduced in rev 1.8 (HI CHRISTOS!!) that caused the maxlen
comparison to always fail (due to type promotions) when sp->fts_pathlen ==
cur->fts_pathlen -- thus causing memory stompage.
the renamed functions, and add some #error directives to force the
issue with weak symbols for renamed functions when we support weak
symbols in the C library.
