On Tue, 16 Mar 2021 at 10:47, Rene Kita <m...@rkta.de> wrote:
>
> On Tue, Mar 16, 2021 at 11:26:29AM +0100, Jakub Jelinek wrote:
> > On Tue, Mar 16, 2021 at 11:20:05AM +0100, Rene Kita wrote:
> > > % gcc -Wall -Wpedantic main.c
> > > main.c: In function 'main':
> > > main.c:10:16: warning: format '%hn' expects argument of type 'short int
> > > *', but argument 2 has type 'short unsigned int *' [-Wformat=]
> > > 10 | printf("p: %hn\n", p);
> > > | ~~^ ~
> > > | | |
> > > | | short unsigned int *
> > > | short int *
> > > | %hn
> ^^^^^
>
> > > The warning for line 10 suggests to use '%hn' as format specifier which
> > > is already used and the wrong one. AFAIK the correct format specifier
> > > would be '%p' here.
> >
> > No, the warning tells you that argument for %hn should have short int *
> > type, not unsigned short int *.
> I understand this and I don't say the warning is wrong but the suggested
> solution. I have highlighted the part of the output I'm talking about
> above. If you replace the '%hn' with e.g. '%d' you get the same
> suggestion:
>
> main.c: In function 'main':
> main.c:10:15: warning: format '%d' expects argument of type 'int', but
> argument 2 has type 'short unsigned int *' [-Wformat=]
> 10 | printf("p: %d\n", p);
> | ~^ ~
> | | |
> | int short unsigned int *
> | %hn
> ^^^^^
This looks similar to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98819
