Warning missing?

[sergio.borghese@gmail.com]

Hello,

Why this code compile without any warning?
I compile it on gcc 3.3.4 with the following command:

gcc -Wall -pedantic -ansi test.c

#include <stdlib.h>
#include <stdio.h>

int pippo(inx)
{
return inx/2;
}

int main(void)
{
int i = 6;
char c = 12;

printf("%d", pippo(i));
printf("%d", pippo(c));
return 0;
}

Thank to all.

Sergio

[Default User]

Re: Warning missing?


sergio.borgh... @gmail.com wrote:[color=blue]
> Hello,
>
> Why this code compile without any warning?[/color]


What warning did you expect?




Brian

[Keith Thompson]

Re: Warning missing?

sergio.borghese @gmail.com writes:[color=blue]
> Why this code compile without any warning?
> I compile it on gcc 3.3.4 with the following command:
>
> gcc -Wall -pedantic -ansi test.c
>
> #include <stdlib.h>
> #include <stdio.h>
>
> int pippo(inx)
> {
> return inx/2;
> }
>
> int main(void)
> {
> int i = 6;
> char c = 12;
>
> printf("%d", pippo(i));
> printf("%d", pippo(c));
> return 0;
> }[/color]

What warning were you expecting?

<OT>"-W -Wall" enables more warnings than "-W" alone.</OT>

--
Keith Thompson (The_Other_Keit h) kst-u@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.

[Martin Ambuhl]

Re: Warning missing?

sergio.borghese @gmail.com wrote:[color=blue]
> Hello,
>
> Why this code compile without any warning?[/color]

I don't know why your version of gcc compiles without warning. _My_
copy gives this warning:
a.c:5: warning: type of "inx" defaults to "int"

[sergio.borghese@gmail.com]

Re: Warning missing?


Martin Ambuhl wrote:[color=blue]
> sergio.borghese @gmail.com wrote:[color=green]
> > Hello,
> >
> > Why this code compile without any warning?[/color]
>
> I don't know why your version of gcc compiles without warning. _My_
> copy gives this warning:
> a.c:5: warning: type of "inx" defaults to "int"[/color]

I would expect a warning like that: in my sample code the argument type
is missing in the function.

Which gcc version you have?

Thanks,

Sergio

[Martin Ambuhl]

Re: Warning missing?

sergio.borghese @gmail.com wrote:[color=blue]
> Martin Ambuhl wrote:
>[color=green]
>>sergio.borghe se@gmail.com wrote:
>>[color=darkred]
>>>Hello,
>>>
>>>Why this code compile without any warning?[/color]
>>
>>I don't know why your version of gcc compiles without warning. _My_
>>copy gives this warning:
>>a.c:5: warning: type of "inx" defaults to "int"[/color]
>
>
> I would expect a warning like that: in my sample code the argument type
> is missing in the function.
>
> Which gcc version you have?[/color]

This belong in a gcc or gnu newsgroup. My version is 3.4.3. Please
direct any further questions to an appropriate newsgroup.

[Ben Pfaff]

Re: Warning missing?

sergio.borghese @gmail.com writes:
[color=blue]
> I would expect a warning like that: in my sample code the argument type
> is missing in the function.[/color]

Your code looked like this:
int foo(bar)
{
...
}
This is a valid non-prototype style function definition. It
could be written more explicitly like this:
int foo(bar)
int bar;
{
...
}
If you want a warning about the absence of a prototype, GCC has
an option for that.
--
int main(void){char p[]="ABCDEFGHIJKLM NOPQRSTUVWXYZab cdefghijklmnopq rstuvwxyz.\
\n",*q="kl BIcNBFr.NKEzjwC IxNJC";int i=sizeof p/2;char *strchr();int putchar(\
);while(*q){i+= strchr(p,*q++)-p;if(i>=(int)si zeof p)i-=sizeof p-1;putchar(p[i]\
);}return 0;}

[Emmanuel Delahaye]

Re: Warning missing?

sergio.borghese @gmail.com wrote on 08/04/05 :[color=blue]
> Hello,
>
> Why this code compile without any warning?
> I compile it on gcc 3.3.4 with the following command:
>
> gcc -Wall -pedantic -ansi test.c[/color]

Well, I must have a different tuning :

main.c:9: warning: function declaration isn't a prototype
main.c: In function `pippo':
main.c:9: warning: type of `inx' defaults to `int'

gcc.exe -c main.c -o dexe/main.o -W -Wall -O2 -Wshadow -Wpointer-arith
-Wcast-qual -Wcast-align -Wwrite-strings -Wconversion
-Waggregate-return -Wstrict-prototypes -Wredundant-decls
-Wnested-externs -Winline
[color=blue]
> #include <stdlib.h>
> #include <stdio.h>
>
> int pippo(inx)
> {
> return inx/2;
> }
>
> int main(void)
> {
> int i = 6;
> char c = 12;
>
> printf("%d", pippo(i));
> printf("%d", pippo(c));
> return 0;
> }[/color]

--
Emmanuel
The C-FAQ: http://www.eskimo.com/~scs/C-faq/faq.html
The C-library: http://www.dinkumware.com/refxc.html

I once asked an expert COBOL programmer, how to
declare local variables in COBOL, the reply was:
"what is a local variable?"