[PATCH] Some compiler warnings removed

[Eli Zaretskii]

> From: Andrew Cagney <ac131313@cygnus.com>
>
> > --- gdb/blockframe.c~0  Wed Dec 22 21:45:02 1999
> > +++ gdb/blockframe.c    Wed Feb 23 16:51:44 2000
> > @@ -70,6 +70,7 @@ nonnull_frame_chain_valid (chain, thisfr
> >       CORE_ADDR chain;
> >       struct frame_info *thisframe;
> >  {
> > +  thisframe = thisframe;
> >    return ((chain) != 0);
> >  }
> > 
> 
> FWIW,
> 
> The way GCC handles this is by appending ATTRIBUTE_UNUSED to the
> parameter declaratons. I see no reason for doing it differently.

I'm not sure I follow.  I know about __attribute__((unused)), but I
thought I couldn't use GCC-specific extensions, except in places which
will never be compiled by anything but GCC (like go32-nat.c).  If
there is a portable way of doing this that I missed, please tell me
where to look.

> >  {
> > -  /* On AIX and i386 GNU/Linux, floating point values are returned in
> > -     floating point registers.  */
> > -#if defined(I386_AIX_TARGET) || defined(I386_GNULINUX_TARGET)
> > +  /* On AIX, i386 GNU/Linux and DJGPP, floating point values are
> > +     returned in floating point registers.  */
> > +#if defined(I386_AIX_TARGET) || defined(I386_GNULINUX_TARGET) || defined(I386_DJGPP_TARGET)
> >    if (TYPE_CODE_FLT == TYPE_CODE (type))
> >      {
> >        double d;
> > @@ -720,7 +720,7 @@ i386_extract_return_value (type, regbuf,
> >        store_floating (valbuf, TYPE_LENGTH (type), d);
> >      }
> >    else
> > -#endif /* I386_AIX_TARGET || I386_GNULINUX_TARGET*/
> > +#endif /* I386_AIX_TARGET || I386_GNULINUX_TARGET || I386_DJGPP_TARGET */
> 
> This one looks more like an actual code change?

Yes.  Sorry, this was intended to be sent with the other batch of
changes I sent yesterday.