Another GLIBC build error with GCC6

[Paul Eggert]

Steve Ellcey wrote:
> I put the old and new
> code segments in a small test program and compiled it on MIPS (32 and 64
> bit modes) and verified that the generated code was identical for both
> versions in that setting.

That's good enough for me.  I installed the patch.

Wasn't there a similar problem with DT_EXTRATAGIDX?  See, for example:

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