Re: Looking for unsigned comparison warning

[Grizlyk]

mathieu wrote:
>
>  I am looking for a flag that would warn me about someting like this
> (*). I have tried so far:
>
> $ g++ -Wall -Wextra -Wconversion -Wsign-compare -g unsigned.cxx
>
> Thanks
> -Mathieu
> (*)
> #include <iostream>
>
> unsigned int size()
> {
>  return 0;
> }
>
> int main(int, char*[])
> {
>  unsigned int s = size();
>  unsigned int index = 1;
>  if ( index <= s - 1 )

//if (!s) condition "if( index <= (s - 1) )" is always true
if(s) if ( index <= (s - 1) )


>    {
>    std::cout << index << " is valid for size " << s << std::endl;
>    }
>  return 0;
> }
>