[phobos] Showstopper bug: Hello world fails on OSX!

[Brad Roberts]

Returning for a second back to the original purpose of this thread.. has the
problem been identified?  It doesn't look like it, but figured I'd ask.

On 11/8/2010 2:12 PM, Walter Bright wrote:
> See my reply: http://d.puremagic.com/issues/show_bug.cgi?id=4854
> 
> Sean Kelly wrote:
>> The library code isn't different between OS versions so my guess is that this
>> is somehow related to object file generation within the compiler. 
>> backend/machobj.c didn't change between May 10th and Jun 11th however, so I'm
>> not sure what to suggest.  If it helps, here are the druntime and DMD
>> timelines for DMD 2.047:
>>
>> http://dsource.org/projects/druntime/timeline?from=6%2F11%2F10&daysback=32&wiki=on&changeset=on&milestone=on&ticket=on&update=Update
>>
>> http://dsource.org/projects/dmd/timeline?from=6%2F11%2F10&daysback=32&wiki=on&changeset=on&milestone=on&ticket=on&update=Update
>>
>>
>> I don't see anything in the druntime changelog that should affect TLS.  The
>> DMD changelog will take longer to go through though.
>>
>> On Nov 8, 2010, at 12:33 PM, Jacob Carlborg wrote:
>>
>>  
>>> I can reproduce the error using 2.050 on Mac OS X 10.5.8.
>>>
>>> On 8 nov 2010, at 20:02, Sean Kelly wrote:
>>>
>>>    
>>>> I can't reproduce using 2.050 and OSX 10.6.  Is anyone still on 10.5 that
>>>> can try this with 2.050?
>>>>
>>>> On Nov 8, 2010, at 3:46 AM, Don Clugston wrote:
>>>>
>>>>      
>>>>> Bug 4854. "Regression(2.047, Mac only) writefln Segmentation fault if
>>>>> no globals"  Confirmed by 3 people.
>>>>>
>>>>> Thread local storage isn't getting set up correctly. Perhaps this
>>>>> happens when TLS is used in a library, but not in user code.
>>>>> This behaviour was introduced in 2.047, though it may have been a
>>>>> latent bug which was only triggered in that release.
>>>>> This may be a druntime bug, though it is more likely to be a compiler bug.
>>>>>
>>>>> Although this is OSX-specific, this bug could still be a PR disaster.
>>>>> Perhaps an OSX user can track down which svn commit triggered the regression.
>>>>       
>>> -- 
>>> /Jacob Carlborg
>>>