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Re: dwarf-frame.c question
- From: Richard Henderson <rth at redhat dot com>
- To: Jim Blandy <jimb at redhat dot com>
- Cc: Andrew Cagney <ac131313 at redhat dot com>, Mark Kettenis <kettenis at chello dot nl>, mludvig at suse dot cz, gdb at sources dot redhat dot com, Alexandre Oliva <aoliva at redhat dot com>
- Date: Tue, 3 Jun 2003 10:36:00 -0700
- Subject: Re: dwarf-frame.c question
- References: <200305291544.h4TFi7aL031832@elgar.kettenis.dyndns.org> <3ED66564.1020506@redhat.com> <200305292222.h4TMMmGm000694@elgar.kettenis.dyndns.org> <3ED693F5.9040108@redhat.com> <vt2ptm09nz9.fsf@zenia.red-bean.com> <3ED7BFD1.7060902@redhat.com> <vt2y90kowlv.fsf@zenia.red-bean.com> <20030603054552.GD19075@redhat.com> <vt2fzmrpt9b.fsf@zenia.red-bean.com> <20030603155646.GA19391@redhat.com>
On Tue, Jun 03, 2003 at 08:56:46AM -0700, Richard Henderson wrote:
> Does this have any other adverse side effects though?
Actually, I can think of one -- this would break the existing
jiggery-pokery that happens during exception handling.
The __cxa_throw routine is known to be noreturn. If we changed
the return address at which it unwound, this would render all
existing EH information invalid, since the throw may not be
"inside" the region that is expecting calls that can throw.
Sorry.
r~