Re: patch to suggest putc/fputs over printf("string") or printf("\n")

[Chip Salzenberg <chip at perlsupport dot com>]

According to Ulrich Drepper:
> Chip Salzenberg <chip@perlsupport.com> writes:
> > > The compiler itself can never rewrite this to
> > >    cp = my_malloc (100); 
> > >    memcpy (mempcpy (cp, "foo", 3), "bar", 4);
> > > since it cannot assume that there are no side-effects on buf.
> > 
> > Sure it can -- standard functions like sprintf and strcat have
> > known behavior that can be depended on during optimization.
> 
> No, it's not possible.  The compiler cannot assume that the buffer is
> not used somewhere else.

Yes, it *is* possible.  Standard functions have standard semantics.
Or did you mean your example to include intervening statements, which
you didn't actually write?
-- 
Chip Salzenberg      - a.k.a. -      <chip@perlsupport.com>
      "When do you work?"   "Whenever I'm not busy."