RE: [RFA] Compact EH Patch

["Moore, Catherine" <Catherine_Moore@mentor.com>]

> -----Original Message-----
> From: Richard Henderson [mailto:rth@redhat.com]
> Sent: Friday, September 18, 2015 3:25 PM
> To: Moore, Catherine; gcc-patches@gcc.gnu.org
> Cc: jason@redhat.com; Matthew Fortune
> Subject: Re: [RFA] Compact EH Patch
> 
> > Index: libgcc/libgcc-std.ver.in
> >
> ==========================================================
> =========
> > --- libgcc/libgcc-std.ver.in	(revision 226409)
> > +++ libgcc/libgcc-std.ver.in	(working copy)
> > @@ -1918,6 +1918,7 @@ GCC_4.6.0 {
> >    __morestack_current_segment
> >    __morestack_initial_sp
> >    __splitstack_find
> > +  _Unwind_GetEhEncoding
> >  }
> >
> >  %inherit GCC_4.7.0 GCC_4.6.0
> > @@ -1938,3 +1939,8 @@ GCC_4.7.0 {
> >  %inherit GCC_4.8.0 GCC_4.7.0
> >  GCC_4.8.0 {
> >  }
> > +
> > +%inherit GCC_4.8.0 GCC_4.7.0
> > +GCC_4.8.0 {
> > +  __register_frame_info_header_bases
> > +}
> 
> You can't push new symbols into old versions.  These have to go into the
> version for the current gcc.
> 
> > Index: libstdc++-v3/config/abi/pre/gnu.ver
> >
> ==========================================================
> =========
> > --- libstdc++-v3/config/abi/pre/gnu.ver	(revision 226409)
> > +++ libstdc++-v3/config/abi/pre/gnu.ver	(working copy)
> > @@ -1909,6 +1909,7 @@ CXXABI_1.3 {
> >      __gxx_personality_v0;
> >      __gxx_personality_sj0;
> >      __gxx_personality_seh0;
> > +    __gnu_compact_pr2;
> >      __dynamic_cast;
> >
> >      # *_type_info classes, ctor and dtor
> > Index: libstdc++-v3/config/abi/pre/gnu-versioned-namespace.ver
> >
> ==========================================================
> =========
> > --- libstdc++-v3/config/abi/pre/gnu-versioned-namespace.ver
> 	(revision 226409)
> > +++ libstdc++-v3/config/abi/pre/gnu-versioned-namespace.ver
> 	(working copy)
> > @@ -200,6 +200,7 @@ CXXABI_2.0 {
> >      __cxa_vec_new;
> >      __gxx_personality_v0;
> >      __gxx_personality_sj0;
> > +    __gnu_compact_pr2;
> >      __dynamic_cast;
> >
> >      # std::exception_ptr
> 
> Likewise.
> 
I'm getting ready to post the updates to this patch -- hopefully, I can still get it in GCC 6.0.
I'm not sure how to tell what the current CXXABI is for these two files.  Should it be CXXABI_2.0 for both of these?
Thanks,
Catherine