debugging tmpdir-gcc.dg-struct-layout-1 failures

[Eric Christopher]

>     I filed a PR29090 for the gcc.dg-struct-layout-1 failure of
> 
> T(94,struct atal16{}a;,)
> 

OK.

> .comm _a94,1
> 	.stabs	"a94:G(0,1)=ar(0,2)=@s64;r(0,2);0;01777777777777777777777;;0;04;(1,1)",32,0,1,0
> 	.stabs	"long unsigned int:t(0,3)=@s64;r(0,3);0;01777777777777777777777;",128,0,0,0
> 	.stabs	"test_va:G(0,4)=k(1,4)",32,0,9,0
> 	.literal8
> 	.align 3
> 
> Does that match what you see in radar for the lack of aligned uninitialized variable
> support on Darwin PPC at -m64? If so could you append the radar number for that
> bug to my PR so they are marked as the same bug?

There's no comment in the Radar as to the exact code, it just mentions 
it as a likely cause.

> ps I assume there are no fixes in-house at Apple for this one yet?

No.

-eric