Warning when passing int, but unsigned int is awaited?

["Rene Perlberg" <Perle5000@xxxxxx>]

Hello everyone,

following scenario:

void func(unsigned int _u)
{
//do a lot of stuff
}

int main()
{
int i = -1;
func(i);
return 0;
}

Is there any way to make the compiler write a warning or an error, when an int is passed to a function which awaits an unsigned int? I tried some of the options gcc gives the user, but nothing worked for me.

I'm using gcc, version 4.1.3 20070929.

Best regards.
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