Subject: Re: Compiler bug ?

From: Paul Eggert <[email-masked]>
Date: Fri, 24 Jan 2014 15:35:21 -0800

On 01/24/2014 03:06 PM, Fabrice Popineau wrote:
> Actually, afaik BITS_PER_ULL == BITS_PER_BITS_WORD

Ah, OK, thanks for following up. It looks like the negated-comparison 
bug caused undefined behavior due to integer overflow in 
count_one_bits_word; once that happens it's anybody's guess what 
compilers will do; maybe you hit the jackpot. Anyway, the Emacs bug is 
fixed (and there doesn't seem to have been a compiler bug) so I'll close 
this report.