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From: "ro at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgcc/110956] [13, 14 regression] gcc_assert is hit at
 gcc-13.2.0/libgcc/unwind-dw2-fde.c#L291 with some special library
Date: Wed, 09 Aug 2023 11:18:18 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110956

Rainer Orth <ro at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> ---
(In reply to Thomas Neumann from comment #1)
> The assert says that the code tries to de-register a frame that it did not
> register before or that was deregistered before. If you see that failing =
you
> might want to add some print statements to
> __register_frame_info_{tables_|}bases  and  __deregister_frame_info_bases.
> But the example that you included in the report does not seem to trigger =
the
> assert but crashes during unwinding instead? This has to be looked at in a
> debugger.

Given my nightmarish experiences debugging unwinder issues, I guess I'll ra=
ther
start with a reghunt to identify when this started.

> I do not have access to Solaris. If you can give me remote access to a
> suitable machine I am willing to debug this, otherwise you must check
> yourself why the crash happens.

There's still no Solaris/x86 box in the cfarm, unfortunately, only
Solaris/SPARC.=