[Coco] Fwd: MW-C Cross compiler bug - Solved

[Gene Heskett]

On Sunday 09 March 2014 17:00:09 Christopher R. Hawks did opine:

> On Sun, 09 Mar 2014 13:04:45 -0400
> 
> Jamie Cho <silurian at icloud.com> wrote:
> > I tracked the error down to the space() function in cprep19.
> > Basically, it is no longer legal for strcpy() or memcpy() to be sent
> > overlapping arrays, but it is ok with memmove().
> 
> 	In Unix/Posix it never was, that's what memmove() is for.
> 
Are you saying that both of my copies (original and the "ANSI C" versions 
of the K&R books are wrong?

> > The corrected version looks like:
> > int
> > space (                         /* shrink spaces to one */
> > 
> >         int a, int b)
> > 
> > {
> > 
> >   register char *cptr;
> >   char *bptr;
> >   size_t line_size;
> >   
> >   bptr = cptr = &line[b];
> >   
> >   while (*(++cptr) == ' ');
> >   
> >   if (bptr != cptr - 1)
> >   {
> >   
> >       line_size = strlen(cptr);
> >       memmove(bptr + 1, cptr, line_size);
> >       a -= (cptr - bptr - 1);
> >   
> >   }
> >   
> >   return a;
> > 
> > }
> > 
> > Who is the maintainer of the compiler and where should updates be
> > posted?
> > 
> > Best,
> > Jamie
> > 
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> 
> Christopher R. Hawks
> HAWKSoft


Cheers, Gene
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