* Compiler warning in count_trailing_zero_bits
@ 2013-11-15 9:02 Eli Zaretskii
2013-11-15 18:03 ` Paul Eggert
0 siblings, 1 reply; 3+ messages in thread
From: Eli Zaretskii @ 2013-11-15 9:02 UTC (permalink / raw)
To: Paul Eggert; +Cc: emacs-devel
The line in data.c marked below:
else
{
int count;
for (count = 0;
count < BITS_PER_BITS_WORD - BITS_PER_ULL;
count += BITS_PER_ULL)
{
if (val & ULLONG_MAX)
return count + count_trailing_zeros_ll (val);
val = shift_right_ull (val);
}
if (BITS_PER_BITS_WORD % BITS_PER_ULL != 0
&& BITS_WORD_MAX == (bits_word) -1)
>>>>> val |= (bits_word) 1 << (BITS_PER_BITS_WORD % BITS_PER_ULL);
return count + count_trailing_zeros_ll (val);
}
causes a compiler warning in a 32-bit unoptimized build:
data.c: In function `count_trailing_zero_bits':
data.c:3114: warning: left shift count >= width of type
This is result of commit in revision 115095.
I hope it will be possible to prevent this nuisance.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Compiler warning in count_trailing_zero_bits
2013-11-15 9:02 Compiler warning in count_trailing_zero_bits Eli Zaretskii
@ 2013-11-15 18:03 ` Paul Eggert
2013-11-15 18:31 ` Eli Zaretskii
0 siblings, 1 reply; 3+ messages in thread
From: Paul Eggert @ 2013-11-15 18:03 UTC (permalink / raw)
To: Eli Zaretskii; +Cc: emacs-devel
On 11/15/2013 01:02 AM, Eli Zaretskii wrote:
> I hope it will be possible to prevent this nuisance.
Should be fixed in trunk bzr 115117.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Compiler warning in count_trailing_zero_bits
2013-11-15 18:03 ` Paul Eggert
@ 2013-11-15 18:31 ` Eli Zaretskii
0 siblings, 0 replies; 3+ messages in thread
From: Eli Zaretskii @ 2013-11-15 18:31 UTC (permalink / raw)
To: Paul Eggert; +Cc: emacs-devel
> Date: Fri, 15 Nov 2013 10:03:02 -0800
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: emacs-devel@gnu.org
>
> On 11/15/2013 01:02 AM, Eli Zaretskii wrote:
>
> > I hope it will be possible to prevent this nuisance.
>
> Should be fixed in trunk bzr 115117.
Indeed it is, thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-11-15 9:02 Compiler warning in count_trailing_zero_bits Eli Zaretskii
2013-11-15 18:03 ` Paul Eggert
2013-11-15 18:31 ` Eli Zaretskii
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