Re: RFA: abstract C++ ABI dependencies

[Jim Blandy <jimb@zwingli.cygnus.com>]

Thanks for reading so carefully (and promptly!).  I thought I'd been
careful, but clearly there's a bunch of stuff botched.  I'll post a
revision in a bit.

I've answered your questions below.

David Taylor <taylor@candd.org> writes:
> cp-abi.h -- includes defs.h and value.h; this is contrary to the value
> of the macro definition of cp_abi_h in Makefile.in.
> 
> While I dislike having include files include other include files and I
> don't wish to reopen that debate, I must ask -- why does cp-abi.h
> include defs.h?
>
> Your definition of cp_abi_h is simply cp-abi.h -- however, cp-abi.h
> includes other header files -- OOPS!

I share your preference.  In the next rev of this patch, cp-abi.h will
no longer #include any other files.

>     2001-04-24  Jim Blandy  <jimb@redhat.com>
> 
> 	    (Changes from Daniel Berlin, with revisions by Jim Blandy.)
> 
> 	    Abstract out operations specific to particular C++ ABI's, and
> 	    invoke them through a function table.  This removes the C++ ABI
> 	    dependencies scattered throughout the code, and allows us to
> 	    cleanly add support for new C++ ABI's.
> 
> 	    * cp-abi.h, cp-abi.h, gnu-v2-abi.c, hpacc-abi.c: New files.
> 
> *NONE* of these files initialize the rtti_type field within the
> cp_abi_ops structure; they all let it default to 0.
> 
> 	    * c-typeprint.c, c-valprint.c, dbxread.c, eval.c, gdbtypes.c,
> 	    jv-typeprint.c, linespec.c, symtab.c, typeprint.c, valops.c:
> 	    #include "cp-abi.h".
> 
> For c-valprint.c, eval.c, typeprint.c, and valops.c, it is unclear to
> me why you are including cp-abi.h.

Because they use functions which used to be declared elsewhere, but
are now declared in cp-abi.h.  I've clarified the ChangeLog entry.