On Thu, 4 Jun 2015, Richard Earnshaw wrote:
> > Change that into
> >
> > int foo(char *s)
> > {
> > int l = strlen (s);
> > char *p = memchr (s, 'a', l);
> > return p+l;
> > }
> >
>
> Which is still meaningless if 'a' does not appear in s => when the
> result is NULL + l.
>
> In fact, unless 'a' is the first character the result is possibly
> meaningless anyway, since you can't know that p+l doesn't point more
> than one beyond the end of the object.
>
> Perhaps you just meant to return 'p'?
And if size_t is wider than int, this function truncates the length of the
string, so still isn't particularly sensible even if returning p.
--
Joseph S. Myers
[email protected]
