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Subject: Re: pushed: Add support for DWARF-based fixed point types
To: Pedro Alves <pedro@palves.net>, Joel Brobecker <brobecker@adacore.com>,
 gdb-patches@sourceware.org
References: <1604817017-25807-1-git-send-email-brobecker@adacore.com>
 <1605429345-78384-1-git-send-email-brobecker@adacore.com>
 <c2b8aaac-22a5-66e8-8f0f-78e41d85adab@palves.net>
From: Simon Marchi <simark@simark.ca>
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Date: Tue, 17 Nov 2020 09:25:30 -0500
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On 2020-11-16 6:48 p.m., Pedro Alves wrote:
> Hi Joel,
> 
> On 11/15/20 8:35 AM, Joel Brobecker wrote:
>> Hi everyone,
>>
>> I just finished pusing the following patch series to branch master.
> 
> I noticed that a new unit test added by this series is failing for me on
> Ubuntu 20.04, which has libgmp.so.10.4.0 :
> 
>  $ ./gdb -ex "maint selftest gdb_mpq_write_fixed_point"
>  GNU gdb (GDB) 11.0.50.20201116-git
>  ...
>  Running selftest gdb_mpq_write_fixed_point.
>  *** stack smashing detected ***: terminated
>  Aborted (core dumped)
>  $
> 
> I've built a clean gdb from scratch to confirm.
> 
> The test passes on Fedora 27, which has libgmp.so.10.3.2:
> 
>  $ ./gdb -ex "maint selftest gdb_mpq_write_fixed_point"
>  GNU gdb (GDB) 11.0.50.20201116-git
>  Running selftest gdb_mpq_write_fixed_point.
>  Ran 1 unit tests, 0 failed
> 
> Anyone else seeing this?
> 

I didn't see it in my -O0 compiled GDB, but I do see it in my -O2 compiled GDB.

Simon