Description of problem:
$ gdb yelp
GNU gdb Red Hat Linux (6.6-5.fc7rh)
Copyright (C) 2006 Free Software Foundation, Inc.
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This GDB was configured as "i386-redhat-linux-gnu"...
Using host libthread_db library "/lib/libthread_db.so.1".
(gdb) r
Starting program: /usr/bin/yelp 
[Thread debugging using libthread_db enabled]
[New Thread -1208793376 (LWP 3121)]
[New Thread -1212380272 (LWP 3124)]
[New Thread -1240654960 (LWP 3125)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1208793376 (LWP 3121)]
0x0806555b in window_do_load (window=0x8661078, doc_info=0x85e4920, 
    frag_id=0x0) at yelp-window.c:999
999     {
(gdb) bt
#0  0x0806555b in window_do_load (window=0x8661078, doc_info=0x85e4920, 
    frag_id=0x0) at yelp-window.c:999
#1  0x08064606 in yelp_window_load (window=0x8661078, 
    uri=0x8076a09 "x-yelp-toc:") at yelp-window.c:972
#2  0x08064b31 in history_step_back (window=0x8661078) at yelp-window.c:715
#3  0x08064ce7 in window_error (window=0x0, error=0x88f11c8, pop=0)
    at yelp-window.c:1106
#4  0x08065703 in window_do_load (window=0x8661078, doc_info=0xb7bccf46, 
    frag_id=0x0) at yelp-window.c:1088
#5  0x08064606 in yelp_window_load (window=0x8661078, 
    uri=0x8076a09 "x-yelp-toc:") at yelp-window.c:972
#6  0x08064b31 in history_step_back (window=0x8661078) at yelp-window.c:715
#7  0x08064ce7 in window_error (window=0x0, error=0x88f11b8, pop=0)
    at yelp-window.c:1106
#8  0x08065703 in window_do_load (window=0x8661078, doc_info=0xb7bccf46, 
    frag_id=0x0) at yelp-window.c:1088
#9  0x08064606 in yelp_window_load (window=0x8661078, 
    uri=0x8076a09 "x-yelp-toc:") at yelp-window.c:972
#10 0x08064b31 in history_step_back (window=0x8661078) at yelp-window.c:715
#11 0x08064ce7 in window_error (window=0x0, error=0x88f1118, pop=0)
    at yelp-window.c:1106
#12 0x08065703 in window_do_load (window=0x8661078, doc_info=0xb7bccf46, 
    frag_id=0x0) at yelp-window.c:1088
[...]

Version-Release number of selected component (if applicable):
2.18.0-1.fc7

How reproducible:
always

Steps to Reproduce:
1. $yelp
2.
3.
  
Actual results:


Expected results:


Additional info: