Re: [avr-gcc-list] How to warn if a function called with extra arguments

[Ian Caddy]

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Hi Tom,

Didn't you answer your own question here.

If you want warnings about function prototypes, then you must define 
prototypes.

In your case, you should have a prototype for f such as:

void f(void);

Hope this helps,

Ian Caddy


Tom Harris wrote:

> Greetings,
>
> Here is an example of code that compiles with no warnings:
>
> void f() {
> }
>
> void g() {
>         f(1); // extra argument
> }
>
> I know that it is harmless, but s there a way to persuade gcc to print a
> warning in such cases?
>
> If I declare f as `f(void)` then the compiler complains about the extra
> argument. 
>
> Compiler options are `-c -g -Os -mcall-prologues  -fshort-enums
> -fpack-struct  -Wall -W -Wno-main -mmcu=atmega32 -std=gnu99"
>
> Thanks
>
> TomH
>
> _______________________________________________
> avr-gcc-list mailing list
> address@hidden
> http://www.avr1.org/mailman/listinfo/avr-gcc-list

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