This looks to me as though it's the same problem I tripped over: perl -e '$d=qr /\#\#/x; print $d, "\n";' produces:

(?x-ism:\#\#l
)
[download]

when I thought it ought to produce (?x-ism:\#\#)

I sent it in as a bug report, and it's been fixed:

The memory corruption bug should be corrected by change #17994 :

Change 17994 by rgs@rgs-home on 2002/10/10 20:19:27

        Fix bug #17776 : memory corruption in qr/##/x

The actual bug is due to:

 * So, if /x was used, we scan backwards from the
 * end of the regex. If we find a '#' before we
 * find a newline, we need to add a newline
 * ourself. If we find a '\n' first (or if we
 * don't find '#' or '\n'), we don't need to add
 * anything.  -jfriedl

So if you can reorganise to stop this occuring, you'll be alright.

--
Tommy
Too stupid to live.
Too stubborn to die.

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