[dmd-internals] changeset 455

[Sean Kelly]

Preliminary support added (in the form of a stack trace) in Druntime revision 290.  I'll see about making it prettier before the next release.

On May 1, 2010, at 10:35 AM, Sean Kelly wrote:

> Sure.
> 
> On May 1, 2010, at 5:55 AM, Andrei Alexandrescu wrote:
> 
>> Since we've been looking into this now and we have a solution in our collective mental caches, is there please a chance to effect this change for this beta? I'm telling you, it is an _important_ step forward in unittesting D programs.
>> 
>> Thanks!
>> 
>> Andrei
>> 
>> On 05/01/2010 01:19 AM, Sean Kelly wrote:
>>> On Apr 30, 2010, at 1:40 PM, Steve Schveighoffer wrote:
>>>> 
>>>> ----- Original Message ----
>>>>> From: Sean Kelly<sean at invisibleduck.org>
>>>>> 
>>>>> On Apr 28, 2010, at 1:25 PM, Andrei Alexandrescu wrote:
>>>>> It's not hard to write a segfault handler that
>>>>> does this, but it involves doing technically illegal stuff in a signal handler
>>>>> (either IO or throwing an exception) so I don't want to make it a built-in
>>>>> feature.
>>>> 
>>>> syscalls are always legal because syscalls exit when signals occur (technically, they aren't even calls, they are software interrupts).  In other words, printf is illegal, write is not.
>>> 
>>> I think it's a bit more restrictive than that, but you're right.  If it helps, the list of signal-safe functions I use for reference is here:
>>> 
>>> http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html
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> 
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