patch to make -d[MDNI] and -g3 work in cpplib

[Dave Brolley]

This patch looks OK. If your tests passed, then go ahead an install it.

Dave

Zack Weinberg wrote:

> This patch fixes the preprocessor debugging switches -d[MDNI] and -g3
> to work in cpplib.  It's tested to compile and to work for my purposes
> (using -dM to do standards conformance checks on system header
> files).  I'm running a full bootstrap and check now.
>
> zw
>
> 1999-04-19 18:13 -0400  Zack Weinberg  <zack@rabi.columbia.edu>
>
>         * cpphash.c (dump_definition): New function.
>         * cpphash.h: Prototype it.
>
>         * cpplib.c (handle_directive): Don't output anything here.
>         Streamline.
>         (pass_thru_directive): Take a length, not a pointer to the
>         end.  All callers changed.
>         (do_define): Handle -dD, -dN, -g3 entirely here.  Streamline.
>         (do_include): Handle -dI here.
>         (do_ident): Correct to match cccp.
>         (do_pragma): Copy the pragma through here.
>         (do_assert, do_unassert): Tidy.
>
>         * cppinit.c (cpp_finish): If -dM was specified, walk the macro
>         hash table and call dump_definition on all the entries.
>         * cppmain.c: cpp_finish may produce output.
>
>                           Name: debug-sw.diff.gz
>    debug-sw.diff.gz       Type: GNU Zip Compressed Data (application/x-gzip)
>                       Encoding: x-uuencode