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Re: [PATCH] build: avoid printf format mismatch warnings
From: |
Joel E. Denny |
Subject: |
Re: [PATCH] build: avoid printf format mismatch warnings |
Date: |
Tue, 29 Sep 2009 13:14:05 -0400 (EDT) |
User-agent: |
Alpine 1.00 (DEB 882 2007-12-20) |
On Tue, 29 Sep 2009, Jim Meyering wrote:
> Joel E. Denny wrote:
>
> > On Tue, 29 Sep 2009, Jim Meyering wrote:
> >
> >> Joel E. Denny wrote:
> >> > On Tue, 29 Sep 2009, Jim Meyering wrote:
> >> >> I tried to bootstrap/build "master" today, without
> >> >> success, so switched to branch-2.5. There, ./bootstrap
> >> >> succeeded, but the build failed with two like this:
> >> >>
> >> >> Sbitset.c: In function 'Sbitset__fprint':
> >> >> Sbitset.c:75: error: format '%d' expects type 'int', but argument 3
> >> >> has type 'Sbitset__Index
> >> >
> >> > Thanks for the report. I'm not seeing those failures with either gcc
> >> > 4.2.4 or 4.3.4. Which gcc are you using?
> >>
> >> Hi Joel,
> >>
> >> I'm using the stock gcc on an up-to-date Fedora 11 system:
> >>
> >> gcc version 4.4.1 20090725 (Red Hat 4.4.1-2) (GCC)
> >
> > I built gcc 4.4.1 from source. I built Bison master and branch-2.5
> > (before applying the Sbitset patch) with it, but I did not see any
> > failures.
> >
> > Is there anything else in your environment that might matter? Do you set
> > CFLAGS, for example?
> >
> > It would be nice to know where this is coming from so we can catch future
> > problems.
>
> I configured with --enable-gcc-warnings (of course! doesn't everybody? ;-)
I always do too, but I still didn't see the failures.
Also, it looks like you got a hard error instead of a warning being
treated as an error, so I'm not completely sure that --enable-gcc-warnings
matters.
With the following test program, I haven't persuaded gcc to give me a
warning or error:
% cat >tmp.c <<EOF
#include <stdio.h>
int
main (void)
{
size_t i = 0;
printf ("%d\n", i);
return 0;
}
EOF
% gcc -std=gnu99 -Wall -Wextra -Wno-sign-compare -Wcast-align -Wcast-qual
-Wformat -Wpointer-arith -Wwrite-strings -Wbad-function-cast
-Wmissing-declarations -Wmissing-prototypes -Wshadow -Wstrict-prototypes
-Werror tmp.c
Any ideas?
- [PATCH] build: avoid printf format mismatch warnings, Jim Meyering, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Joel E. Denny, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Jim Meyering, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Joel E. Denny, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Joel E. Denny, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Jim Meyering, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings,
Joel E. Denny <=
- Re: [PATCH] build: avoid printf format mismatch warnings, Jim Meyering, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Nicolas Joly, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Jim Meyering, 2009/09/29
- Re: [PATCH] build: avoid printf format mismatch warnings, Joel E. Denny, 2009/09/29
Re: [PATCH] build: avoid printf format mismatch warnings, Eric Blake, 2009/09/29