Re: libiberty: hashtab allocation functions with an extra argument

[DJ Delorie <dj at redhat dot com>]

Is there any reason we can't reuse the existing function pointers, by
passing the extra pointer as the *last* argument?  That would avoid
the case where both sets of pointers are set.  The question is, is
there a platform where passing more parameters than expected causes
problems?

Apps which need the extra-arg variant would simply cast the function
to the original type, like this:

	htab_alloc(... (htab_free)my_free, ...);