Bug#459381: xterm: segmentation fault when selecting multi-line text

[Németh Márton <nm127@freemail.hu>]

Package: xterm
Version: 230-1
Severity: important

*** Please type your report below this line ***

Selecting more than one line crashes xterm. The crash depends on what
the xterm window contains.

Steps to reproduce:
1. Start xterm
2. 'cat test.txt' (see attachment) The xterm window should look like the
attached xterm-before-selection.png
3. Position the pointer to the end of the '--disable-rectangles' string
4. Start selecting text left and upwards

Result:

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7a9f8c0 (LWP 24435)]
0x08075444 in ?? ()
(gdb) bt
#0  0x08075444 in ?? ()
#1  0x080b9044 in ?? ()
#2  0xbfe664b8 in ?? ()
#3  0x0804e543 in ?? ()
#4  0x080b7e68 in ?? ()
#5  0x00000007 in ?? ()
#6  0x00000035 in ?? ()
#7  0xbfe664d8 in ?? ()
#8  0x080b7d68 in ?? ()
#9  0xb7e5b558 in ?? () from /usr/lib/libXt.so.6
#10 0xbfe664e8 in ?? ()
#11 0x08050e36 in ?? ()
#12 0xbfe664d8 in ?? ()
#13 0x080b7d68 in ?? ()
#14 0xbfe664e8 in ?? ()
#15 0xb7e236a1 in XtWidgetToApplicationContext () from
/usr/lib/libXt.so.6
Backtrace stopped: previous frame inner to this frame (corrupt stack?)


-- System Information:
Debian Release: lenny/sid
  APT prefers testing
  APT policy: (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.23 (PREEMPT)
Locale: LANG=hu_HU, LC_CTYPE=hu_HU (charmap=ISO-8859-2)
Shell: /bin/sh linked to /bin/bash

Versions of packages xterm depends on:
ii  libc6                     2.7-5          GNU C Library: Shared libraries
ii  libfontconfig1            2.4.2-1.2      generic font configuration library
ii  libice6                   2:1.0.4-1      X11 Inter-Client Exchange library
ii  libncurses5               5.6+20071124-1 Shared libraries for terminal hand
ii  libsm6                    2:1.0.3-1+b1   X11 Session Management library
ii  libx11-6                  2:1.0.3-7      X11 client-side library
ii  libxaw7                   2:1.0.4-1      X11 Athena Widget library
ii  libxext6                  1:1.0.3-2      X11 miscellaneous extension librar
ii  libxft2                   2.1.12-2       FreeType-based font drawing librar
ii  libxmu6                   1:1.0.3-1      X11 miscellaneous utility library
ii  libxt6                    1:1.0.5-3      X11 toolkit intrinsics library
ii  xbitmaps                  1.0.1-2        Base X bitmaps

Versions of packages xterm recommends:
ii  xutils                      1:7.1.ds.3-1 X Window System utility programs

-- no debconf information

--disable-full-tgetent --disable-desktop --disable-setuid --disable-setgid --disable-imake --disable-active-icon --disable-ansi-color --disable-16-color --disable-blink-cursor --disable-c1-print --disable-bold-color --disable-color-class --disable-color-mode --disable-highlighting --disable-doublechars --disable-boxchars --disable-freetype --disable-sun-fkeys --disable-i18n --disable-initial-erase --disable-input-method --disable-maximize --disable-num-lock --disable-pty-handshake --disable-regex --disable-rightbar --disable-samename --disable-session-mgt --disable-tek4014 --disable-vt52 --disable-rectangles --disable-ziconbeep --disable-leaks --disable-echo