On Tue, Oct 05, 2004 at 05:12:36PM -0700, Andi Gutmans wrote:
> At 02:17 PM 10/5/2004 +0200, Edin Kadribasic wrote:
> >On Tuesday 05 October 2004 14:02, Derick Rethans wrote:
> >> On Tue, 5 Oct 2004, Wez Furlong wrote:
> >> > Feels like a major bug to me... this got into a release? :-/
> >>
> >> Yes, please keep the discussion about this in the bugreport, and not on
> >> the list.
> >
> >This is exactly the place where things like this should be discussed.
> >
> >Isn't this behavior changed by Joe Orton's patch to eliminate
> >"undefined compiler behavior"? Breaking BC like this should always be
> >avoided and I vote for reverting that particular fix if it indeed is
> >resposnsible for this problem.
> 
> Yes I agree. The question is how do we revert and deal with Joe's
> problems at the same time?

Well, I can be theoretical:

The behaviour of PHP in handling of this conversion was never well
defined.  The script given in the bug report will already behave
differently for builds PHP 4.3.9 on different platforms (32-bit vs
64-bit).  I think this weakens the "backwards compatibility" argument. 
PHP did not guarantee a particular behaviour, and the behaviour already
differed across platforms, and now also across releases.

Maintaining the old behaviour in conformant C code is tricky or
impossible depending on how you look at it, given that it was determined
purely by C compiler and platform.

... or I can be practical:

just revert the changes in the stable branches (I didn't particular
expect it to show up there in the first place).  I only looked at this
code because it was triggering a GCC bug, which is now fixed.

joe

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