I normally "read" every article by quickly using the "n" (next) command 
to skip over unwanted articles.  (I have a local news server so this is 
efficient enough).  Recently, certain articles are causing a segmentation 
violation when reading the article (using gmime from the cache).  Simply 
selecting the article from the header pane or "n" to the article will 
cause the crash.  Also happens on 0.13.? and 0.14.2.  100% reproducible 
on the given articles.  Included here are a scripted stack backtrace, the 
end of a scripted --debug and an example article that causes the crash 
(taken directly from pan's cache).  N.B. I cut most of the base64-encoded 
data from the cached file (included here) for brevity.  The crash happens 
on both the full article and this abbreviated form.  Plus, given the 
print statement just before the crash, I suspect that pan is not dealing 
well with an invalid header: 
 
conductor.iss.net$ ./pan 
(Null) - Invalid header: 
Segmentation fault 
conductor.iss.net$ 
 
 
Thanks! 
Randy 
 
------------------------------------------------- 
 
conductor.iss.net$ cat pan_backtrace 
Script started on Thu Jan 15 13:03:05 2004 
conductor.iss.net$ uname -a 
Linux conductor.iss.net 2.4.21 #12 Fri Aug 22 21:02:56 EDT 2003 i686 i686 
i386 GNU/Linux 
conductor.iss.net$ export LD_ASSUME_KERNEL=2.4.1 
conductor.iss.net$ gdb pan 
GNU gdb Red Hat Linux (5.3post-0.20021129.18rh) 
Copyright 2003 Free Software Foundation, Inc. 
GDB is free software, covered by the GNU General Public License, and you 
are 
welcome to change it and/or distribute copies of it under certain 
conditions. 
Type "show copying" to see the conditions. 
There is absolutely no warranty for GDB.  Type "show warranty" for 
details. 
This GDB was configured as "i386-redhat-linux-gnu"... 
(gdb) handle SIGUSR1 nostop noprint 
Signal        Stop      Print   Pass to program Description 
SIGUSR1       No        No      Yes             User defined signal 1 
(gdb) handle SIG32 nostop noprint 
Signal        Stop      Print   Pass to program Description 
SIG32         No        No      Yes             Real-time event 32 
(gdb) run 
Starting program: /home/randy/computer/pan/pan-0.14.2.90/pan/pan 
[New Thread 16384 (LWP 29036)] 
[New Thread 32769 (LWP 29037)] 
[New Thread 16386 (LWP 29038)] 
[New Thread 32771 (LWP 29039)] 
[New Thread 49156 (LWP 29040)] 
[New Thread 65541 (LWP 29041)] 
[New Thread 81926 (LWP 29042)] 
[New Thread 98311 (LWP 29043)] 
[New Thread 114696 (LWP 29044)] 
[Thread 114696 (LWP 29044) exited] 
[New Thread 131081 (LWP 29045)] 
[Thread 131081 (LWP 29045) exited] 
(Null) - Invalid header: 
 
Program received signal SIGSEGV, Segmentation fault. 
[Switching to Thread 16384 (LWP 29036)] 
0x4063e14c in memcpy () from /lib/libc.so.6 
(gdb)  thread apply all bt 
 
Thread 8 (Thread 98311 (LWP 29043)): 

+ Trace 43255

The program is running.  Exit anyway? (y or n) y 
conductor.iss.net$ 
Script done on Thu Jan 15 13:04:57 2004 
conductor.iss.net$ 
 
------------------------------------------------------------- 
 
(    queue.c:179:        queue_wakeup)(thread 0x818da90)(time 
13:07:43)(depth   3) TRACE: + queue_wakeup 
(    queue.c:186:        queue_wakeup)(thread 0x818da90)(time 
13:07:43)(depth   2) TRACE: - queue_wakeup 
(   queue.c:1168:       queue_do_todo)(thread 0x818da90)(time 
13:07:43)(depth   1) TRACE: - queue_do_todo 
(   queue.c:1106:queue_run_what_we_can)(thread 0x818da90)(time 
13:07:43)(depth   0) TRACE: - queue_run_what_we_can done 
(   queue.c:1118:       queue_do_todo)(thread 0x818da90)(time 
13:07:43)(depth   1) TRACE: + queue_do_todo 
(   queue.c:1168:       queue_do_todo)(thread 0x818da90)(time 
13:07:43)(depth   0) TRACE: - queue_do_todo 
(   queue.c:1025:queue_run_what_we_can)(thread 0x818da90)(time 
13:07:43)(depth   1) TRACE: + queue_run_what_we_can 
(   queue.c:1106:queue_run_what_we_can)(thread 0x818da90)(time 
13:07:43)(depth   0) TRACE: - queue_run_what_we_can done 
(status-item-view.c:330:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   5) TRACE: + 
status_item_view_set_item_nolock 
(status-item-view.c:374:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   4) TRACE: - 
status_item_view_set_item_nolock 
(status-item-view.c:330:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   5) TRACE: + 
status_item_view_set_item_nolock 
(status-item-view.c:374:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   4) TRACE: - 
status_item_view_set_item_nolock 
(status-item-view.c:330:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   5) TRACE: + 
status_item_view_set_item_nolock 
(status-item-view.c:374:status_item_view_set_item_nolock)(thread 
0x815d7f8)(time 13:07:44)(depth   4) TRACE: - 
status_item_view_set_item_nolock 
(   group.c:1164:  group_ref_articles)(thread 0x815d7f8)(time 
13:07:46)(depth   5) TRACE: + group_ref_articles 
(   group.c:1181:  group_ref_articles)(thread 0x815d7f8)(time 
13:07:46)(depth   4) TRACE: - group_ref_articles 
(articlelist.c:2046:tree_select_row_idle)(thread 0x815d7f8)(time 
13:07:46)(depth   5) TRACE: + tree_select_row_idle 
(articlelist.c:198:_articlelist_get_selected_articles_nolock)(thread 
0x815d7f8)(time 13:07:46)(depth   6) TRACE: + 
articlelist_get_selected_articles_nolock 
(articlelist.c:210:_articlelist_get_selected_articles_nolock)(thread 
0x815d7f8)(time 13:07:46)(depth   5) TRACE: - 
articlelist_get_selected_articles_nolock 
(   acache.c:154:acache_message_id_to_basename)(thread 0x815d7f8)(time 
13:07:46)(depth   6) TRACE: + acache_message_id_to_basename 
(   acache.c:181:acache_message_id_to_basename)(thread 0x815d7f8)(time 
13:07:46)(depth   5) TRACE: - acache_message_id_to_basename 
(Null) - Invalid header: 
Segmentation fault 
conductor.iss.net$ 
Script done on Thu Jan 15 13:07:50 2004 
conductor.iss.net$ 
 
------------------------------------------------------------ 
 
Path: 
bigbe1!bigfeed.bellsouth.net!news.bellsouth.net!cox.net!news-xfer.cox.net!npeer.de.kpn-eurorings.net!news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.multikabel.nl!news-x2.support.nl!post.news-service.com!nf2.news-service.com|not-for-mail 
Message-ID: <8fdf2$400674cc$421c734e$29328@nf2.news-service.com> 
From: Lolitka <1074164219400671FB2BB2D@yahoo.com> 
Newsgroups: 
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Subject: I LIKE THIS TEENIE - pp667-05.jpg -[5] 
Date: Tue, 15 Jan 2004 17:41:09 -0000 
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