Re: [PATCH] selftests: memfd_test.c: fix compilation warning.

[lei yang]

On 2017å11æ07æ 07:46, Shuah Khan wrote:
> On 11/05/2017 03:56 AM, Lei Yang wrote:
> > Replace '%d' by '%zu' to fix the following compilation warning.
> >
> > memfd_test.c:517:3: warning: format â%dâ expects argument of
> > type âintâ,but argument 2 has type âsize_tâ [-Wformat=]
> >     printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
> >     ^
> > memfd_test.c: In function âmfd_fail_grow_writeâ:
> > memfd_test.c:537:3: warning: format â%dâ expects argument
> > of type âintâ,but argument 2 has type âsize_tâ [-Wformat=]
> >     printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
> >
> > Signed-off-by: Lei Yang <Lei.Yang@xxxxxxxxxxxxx>
> > ---
> >   tools/testing/selftests/memfd/memfd_test.c | 4 ++--
> >   1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
> > index f94c6d1..95df9e6 100644
> > --- a/tools/testing/selftests/memfd/memfd_test.c
> > +++ b/tools/testing/selftests/memfd/memfd_test.c
> > @@ -514,7 +514,7 @@ static void mfd_assert_grow_write(int fd)
> >   
> >   	buf = malloc(mfd_def_size * 8);
> >   	if (!buf) {
> > -		printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
> > +		printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);
> >   		abort();
> >   	}
> >   
> > @@ -534,7 +534,7 @@ static void mfd_fail_grow_write(int fd)
> >   
> >   	buf = malloc(mfd_def_size * 8);
> >   	if (!buf) {
> > -		printf("malloc(%d) failed: %m\n", mfd_def_size * 8);
> > +		printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);
> >   		abort();
> >   	}
> >   
> Relates to gcc version perhaps. What's your gcc version?

$ cat /proc/version
Linux version 3.16.0-30-generic (buildd@kissel) (gcc version 4.8.2 
(Ubuntu 4.8.2-19ubuntu1) ) #40~14.04.1-Ubuntu SMP Thu Jan 15 17:43:14 
UTC 2015


Lei



> thanks,
> -- Shuah