Re: Unnecessary warnings

[Bruce Korb]

On 9/25/06, Ludovic Courtès <address@hidden> wrote:
> Hi,
>
> Bruce Korb <address@hidden> writes:
>
> > /usr/local/gnu/include/libguile/smob.h:149: warning: declaration of 'free' 
> shadows a global declaration
> > /usr/local/gnu/include/libguile/filesys.h:75: warning: declaration of 
> 'dirname' shadows a global declaration
> > /usr/local/gnu/include/libguile/ports.h:233: warning: declaration of 'write' 
> shadows a global declaration
> > /usr/local/gnu/include/libguile/ports.h:254: warning: declaration of 
> 'truncate' shadows a global declaration
> > /usr/local/gnu/include/libguile/numbers.h:258: warning: declaration of 'div' 
> shadows a global declaration
> > /usr/local/gnu/include/libguile/stime.h:55: warning: declaration of 'time' 
> shadows a global declaration
> > /usr/include/iso/time_iso.h:91: warning: shadowed declaration is here
> > /usr/local/gnu/include/libguile/stime.h:56: warning: declaration of 'time' 
> shadows a global declaration
> > /usr/include/iso/time_iso.h:91: warning: shadowed declaration is here
> > /usr/local/gnu/include/libguile/stime.h:60: warning: declaration of 'stime' 
> shadows a global declaration
> >
> > These are all due to argument names in prototype declarations.
>
> What compiler issues those messages?  To me, it looks like the compiler
> is kind of broken, because there's no reason (AFAIK) there can be name
> clashes between argument names and global declarations.

GCC on Solaris.  I agree that it is just a documentation name and serves
no other purpose, but there it is.  I do like -Wshadow, but it is not so useful
if cluttered up with these spurious messages.  As for the "function is not
a prototype" messages, having a typedef for the particular procedure profile
being passed around allows for better profile matching in the calling code
anyway.  It also cleans up the appearance of your prototype.

Thanks! - Bruce