From: Ben Crowell <crowell07@...>
Date: 2007-06-12T10:10:07+09:00
Subject: Re: possible bug in oniguruma, not 64-bit clean?

Daniel Berger wrote:
> On Jun 11, 3:43 pm, Ben Crowell
> <crowel...@lightSPAMandISmatterEVIL.com> wrote:
>> 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)
>                                       ^
> 
> Where's the matching opening paren for "end)" there?

It's not there, because the ruby interpreter has changed my
source code! If you look back at my original post, I gave the
source code that I actually wrote:

tex.split(/\\(?:begin|end){#{x}}/).each { |m|

The opening paren is there in my source code. When the error
message is printed out, it's apparent that the first 8 bytes
of the regex string have been overwritten with garbage by
a bug in the ruby interpreter.