GAS vs. GCC

[Joe Buck]

> I'm catching up on the last few days of email.
> 
> I see (by my own experiment) that GCC now causes GAS to crash on the
> mainline, although, thankfully, not on the release branch.

Which OS, which GAS version?

> Would someone mind explaining what happenned here?
> 
> In particular,
> 
>   - What's going wrong?
> 
>   - Was this a latent bug in GAS, or is GCC now generating some
>     opcode or other construct that it did not before?

If GAS crashes for any input whatsoever, it's a GAS bug (same with GCC).
Since we didn't notice before, it was latent.  We might want to try to
work around it, though.