Another GLIBC build error with GCC6

[Paul Eggert]

On 08/04/2015 01:28 PM, Richard Henderson wrote:
> I believe you can just change L to UL and it should all Just Work.

Yes, though it's still confusing code.  A better approach is in:

https://sourceware.org/ml/libc-alpha/2015-07/msg00713.html

> Probably a formulation like #define DT_EXTRATAGIDX(tag) ((tag) - 
> (DT_HIPROC - DT_EXTRANUM)) would be a lot better. And understandable, 
> from a "what the hell is this trying to do" standpoint. r~ 

Right idea, though that particular formulation looks backwards -- see 
Andreas's suggestion as codified in:

https://sourceware.org/ml/libc-alpha/2015-07/msg00742.html