mutt is crashing with segfault when running a macro

[Asif Iqbal <vadud3@xxxxxxxxx>]

When I run the following macro mutt exits with segfault

macro index S 
'<pipe-message>/home/axisys/.mutt/script/reportspam.sh<enter><delete-message>'

Here is the script

#!/bin/bash
# take the email and send it as attachment to abuse
# save to tmp file
spam=$(tempfile -s .eml)
ABUSE=abuse@xxxxxxxxxxx

cat > "$spam"

# use formail to extract subject (could use grep in a pinch)
subj=$(formail -x subject < $spam)

if [ ! -z "$spam" ]; then
        mutt -e 'set from=user@xxxxxxxxxxx' -s "[spam]$subj" -a $spam
-- "$ABUSE"
fi
rm "$spam"


Here is the segfault in `dmesg'

http://pastebin.com/29JuFUCv

I am running mutt 1.5.20 on ubuntu lucid

If I add `set -x' in that macro script this is how it reports about the segfault

++ tempfile -s .eml
+ spam=/tmp/fileMWDTFO.eml
+ ABUSE=abuse@xxxxxxxxxxx
+ cat -
Segmentation fault
++ formail -x subject
+ subj=
+ '[' '!' -z /tmp/fileMWDTFO.eml ']'
+ mutt -e 'set from=user@xxxxxxxxxxx' -s '[spam]' -a
/tmp/fileMWDTFO.eml -- abuse@xxxxxxxxxxx
+ rm /tmp/fileMWDTFO.eml

Am I hitting a bug? Is there a way to run mutt in debug mode to get more details

-- 
Asif Iqbal
PGP Key: 0xE62693C5 KeyServer: pgp.mit.edu
A: Because it messes up the order in which people normally read text.
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