gdb and core files

Mark Geisert
Fri Jul 3 06:37:40 GMT 2020

Jon Turney wrote:
> On 30/06/2020 04:24, Mark Geisert wrote:
>> Ken Brown via Cygwin wrote:
>>> On 6/28/2020 9:31 AM, Jon Turney wrote:
>>>> On 28/06/2020 01:50, Ken Brown via Cygwin wrote:
>>>>> Following the instructions at 
>>>>>, I tried to create a 
>>>>> core file that I could examine with gdb, but I apparently ran into a gdb 
>>>>> bug. I tried both gdb 9.2-1 and 8.3.1-1.  Here are the results with 9.2-1.
>>>> [...]
>>>> Unfortunately, I think dumper doesn't produce anything useful on x86_64. See 
>>>> [1] et seq.
>>> Thanks.  Sorry I didn't notice that people had asked the same question before.
>>> We should probably fix the documentation:
> Yeah, with hindsight, that would have been a good idea.
>> I hesitate to comment when I can't immediately work on this, but, ...making 
>> dumper work on 64-bit Cygwin is on my TODO list but not right at the top.  It 
>> would be helpful to keep the program around in its current 32-bit state as a 
>> template for 64-bit.
> I had a poke at this problem this week.
> [1]
> [2]

Ow, I've been ninja'd!  Seriously, nice to see this work.  Great!

>> P.S. For the long term, I think it was Jon who suggested dumper generate 
>> Windows minidumps rather than the current Frankensteinish dumps.  I intend to 
>> investigate that when I get to this project.
> Not quite.  There's already a tool ('minidumper') to generate minidumps.  But 
> gdb can't read those (yet).

Appreciate the correction.  I'll check in when I can spend time on this.


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