[phobos] "bus error" happens on Mac OS X

[Steve Schveighoffer]

I think the Mac OS code generation has some issues.

In the original code before I checked that in, every module index is set (see 
the revision before 414: 
http://dsource.org/projects/druntime/browser/trunk/src/object_.d?rev=405#L1900). 
 I don't see why r414 fails and r413 doesn't.

BTW, I just noticed, a lot of the code in prior versions checks to see if the 
array contains null pointers, does this happen?  I don't think I put those 
guards in.

Masahiro, can you run an assert loop like so?  I don't have a Mac, and 
everything appears to work fine on Linux.

foreach(m; _moduleinfo_array)
   if(!m)
      assert(0, "found null reference");

-Steve



----- Original Message ----
> From: Masahiro Nakagawa <repeatedly at gmail.com>
> To: Phobos mailing list <phobos at puremagic.com>
> Sent: Fri, November 12, 2010 12:03:01 AM
> Subject: [phobos] "bus error" happens on Mac OS X
> 
> Any programs raised "bus error" in the trunk (My environment is Mac OS X  
>10.6.4).
> I checked druntime and found problematic revision.
> r413 works  fine but r414 and later don't (Phobos unittest stopped at crc32 
>test).
> 
> http://dsource.org/projects/druntime/changeset/414
> 
> The cause is an  access to _moduleinfo_array.
> In the above link, "m.index = i;" at line 2045  is because of this bug.
> But, but, but, r414 doesn't change the creation  routine of _moduleinfo_array.
> 
> It's a mystery to me...  Why?
> 
> 
> Masahiro
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