Hello

A Debian user reported [1] the following issue with Pan 0.139 on Debian amd64:

I am having an issue with Pan, where it is crashing when I try to open certain 
articles.

All spam reports received get posted to a newsgroup, as-is.  It seems that, in 
certain cases, opening those posts causes Pan to crash.  The particular article 
causing the crash has multiple multipart MIME layers:

* The article's content-type is multipart/mixed, which contains a single message/rfc822 email.  
* That email's MIME type is also multipart/mixed, and contains a single multipart/alternative.
* The multipart/alternative contains two items: A text/plain and a third 
multipart/mixed.
* The text/plain is an email as plain (quoted-printable) text.
* The innermost multipart/mixed contains a text/html part (the email as HTML) 
and a PDF (as an inline attachment).

I think something about that post, and all of its MIME layers, is crashing Pan.

I am attaching two items.  First is the post in question that is crashing Pan [2].  
Second is the output of running `gdb --args pan --debug` [3], showing Pan's debug 
messages and the crash backtrace.

Let me know if you need anything else!



[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=779364

Here are the attachments, also available in the bug report above:
[2] https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=BAY0-XMR-011KsqKTDH01a1f0e8%40BAY0-XMR-011.phx.gbl.msg;att=1;bug=779364
[3] https://bugs.debian.org/cgi-bin/bugreport.cgi?msg=5;filename=pan_debug_backtrace.txt;att=2;bug=779364