From: Ben Crowell <crowell07@...>
Date: 2007-06-12T06:45:10+09:00
Subject: Re: possible bug in oniguruma, not 64-bit clean?

Okay, I managed to make something a little smaller:
   http://www.lightandmatter.com/ruby_bug.tar.gz
When I run the script "bug" in this tarball on my
x64 machine, I get the following output:

--------------------------------------------------------
warning, undefined reference nonmetricunits
warning, undefined reference electroncapture
./a.rb:570:in `block in handle_math': unmatched close parenthesis: 
/\220\007~\000\000\000\000\000in|end){align\*?}/ (RegexpError)
         from ./a.rb:564:in `each'
         from ./a.rb:564:in `handle_math'
         from ./a.rb:760:in `parse_para'
         from ./a.rb:1048:in `block in <main>'
         from ./a.rb:1046:in `each'
         from ./a.rb:1046:in `<main>'
--------------------------------------------------------

(The two warning messages are output from my program, not
from ruby.)

Ruby's behavior in this example is really, really strange.
Believe it or not, if I cut out the third line of the file,
which is a comment, I no longer get the error from the ruby
interpreter. In fact, almost any seemingly trivial change I
make to the file a.rb seems to get rid of the error. This is
the kind of behavior that's made it extremely difficult for
me to cut this down to a small test program that demonstrates
the bug.

I'll post this on the oniguruma bug tracker.