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Re: Windows 64 port
From: |
Eli Zaretskii |
Subject: |
Re: Windows 64 port |
Date: |
Wed, 29 Feb 2012 20:08:51 +0200 |
> From: Fabrice Popineau <address@hidden>
> Date: Tue, 28 Feb 2012 23:39:46 +0100
> Cc: Eli Zaretskii <address@hidden>, AJMR <address@hidden>, address@hidden
>
> > > There is something wrong around lib/strftime.c:946
> > > if (negative_number)
> > > u_number_value = - u_number_value;
> > >
> > > u_number_value being unsigned, this is wrong.
> >
> > I don't see anything wrong there. The value of
> > -X is well-defined if X is unsigned int; it's
> > equivalent to ~X + 1. Can you supply a test case
> > illustrating the actual bug?
> >
> >
> When my compiler issues a warning like :
>
> unsigned.c
> unsigned.c(3) : warning C4146: unary minus operator applied to unsigned
> type, result still unsigned
>
> I tend to care about it. If it is on purpose, then I'm ok with it albeit I
> would have prefered something less error prone
> (I mean human interpretation error :-) )
I agree that such confusing code, even if it does its job correctly,
is bad for maintainability. At the very least, it warrants a comment
explaining why things are done that way. Rewriting it not to negate
unsigned values with arithmetic operations would be even better.
> I did it because I'm using it this way, but that should be doable with
> MINGW x64 (or so I guess).
> With the MS tools, emacs does not compile out of the box. There are errors.
> There are also lots of warnings and when something does not work, I try to
> remove warnings first.
Please go on, I have no doubt that resolving these issues will make
the code cleaner and clearer, and of course will also help the MinGW64
build when the time comes.
> All in all, at least for the record, it may help people who would need an
> emacs/x64/windows this way.
Right. Thanks.
- Re: Windows 64 port, (continued)
- Re: Windows 64 port, Richard Stallman, 2012/02/22
- Re: Windows 64 port, Eli Zaretskii, 2012/02/22
- Re: Windows 64 port, Richard Stallman, 2012/02/23
- Re: Windows 64 port, Aurélien, 2012/02/23
- Re: Windows 64 port, Lennart Borgman, 2012/02/23
- Re: Windows 64 port, Fabrice Popineau, 2012/02/23
- Re: Windows 64 port, Aurélien, 2012/02/24
- Re: Windows 64 port, Fabrice Popineau, 2012/02/28
- Re: Windows 64 port, Paul Eggert, 2012/02/28
- Re: Windows 64 port, Fabrice Popineau, 2012/02/28
- Re: Windows 64 port,
Eli Zaretskii <=
- Re: Windows 64 port, Paul Eggert, 2012/02/29
- Re: Windows 64 port, Eli Zaretskii, 2012/02/29
- Re: Windows 64 port, Paul Eggert, 2012/02/29
- Re: Windows 64 port, Eli Zaretskii, 2012/02/29
- Re: Windows 64 port, Paul Eggert, 2012/02/29
- Re: Windows 64 port, Eli Zaretskii, 2012/02/29
- Re: Windows 64 port, Eli Zaretskii, 2012/02/20
- Re: Windows 64 port, AJMR, 2012/02/26
- Re: Windows 64 port, Eli Zaretskii, 2012/02/26
- Re: Windows 64 port, AJMR, 2012/02/27