Version française
Home     About     Download     Resources     Contact us    

This site is updated infrequently. For up-to-date information, please visit the new OCaml website at

Browse thread
ICFP'00 programming contest
[ Home ] [ Index: by date | by threads ]
[ Search: ]

[ Message by date: previous | next ] [ Message in thread: previous | next ] [ Thread: previous | next ]
Date: -- (:)
From: Pascal Grosse <grosse@i...>
Subject: Re: ICFP'00 programming contest

On Fri, 1 Sep 2000, Xavier Leroy wrote:

> > I tried to compile the raytracer ...
> > > /tmp/camlasm0.s: Assembler messages:
> > > /tmp/camlasm0.s:235: Error: suffix or operands invalid for `fld'
> > Did you use a special version of ocamlopt ?
> Actually, we used a post-3.00 development version.
> I'm embarrassed to admit it, but the ray-tracer actually triggers a
> rather unlikely bug in the ocamlopt 3.00 compiler.
> (The development version we used still has the bug, but by sheer luck
> doesn't trigger it.)
> So, this programming contest actually has some technical value as a
> bug finder, in addition to its amusement value :-)
> I modified the source code available on the Web site so that it
> doesn't run into the bug.  (The bug pops up in a function that is
> not normally called, anyway.)

I found that by removing the '-inline 20' in the makefile, the error is
not triggered by ocamlopt v3.00.

Pascal Grossé