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Re: bug in xcommon/TextField.c:293 (Siag 3.1.16)




A workaround is to comment out the line

#define HAVE_XCREATEIC 1

in config.h and recompile. You will then probably (depending on other
features in your X-server) get problems with entering dead keys, but at
least it shouldn't crash.

I'll add a check so the input method code can fall back onto something
safe if necessary. In 3.1.17, hopefully.

Original message below. Thanks for the debug trace, it was very useful.

Ulric

---------- Forwarded message ----------

Hello!

For whatever  reason, XOpenIM  call in the  previous line  returns NULL,
which is  NOT CHECKED  for. The  programs (siag, egon)  then die  in the
xcommon/TextField.c because  the xim argument passed  to XGetIMValues is
NULL.

I'm  having this  problem  on two  machines --  a  P90 with  Xinside-3.1
xserver and a  PII300 with Xinside-5.0.0.1 xserver.  Operating system in
both  cases if  FreeBSD-3.2-STABLE.  I have  very  limited knowledge  of
X-programming,  but  here is  the  gdb's  output  you may  find  usefull
(debugging siag).  xdpyinfo from both  displays is below.  I'd apreciate
work-around suggestions while this bug is being fixed... Thanks! Yours,

	-mi

Program received signal SIGSEGV, Segmentation fault.
0x282c3d46 in XGetIMValues () from /usr/X11R6/lib/libX11.so.6
(gdb) where
#0  0x282c3d46 in XGetIMValues () from /usr/X11R6/lib/libX11.so.6
#1  0x807af00 in Realize (w=0x81adc00, valueMask=0xbfbfd2fc, 
    attributes=0xbfbfd300) at TextField.c:293
#2  0x2825e947 in RealizeWidget () from /usr/X11R6/lib/libXt.so.6
#3  0x2825ead4 in RealizeWidget () from /usr/X11R6/lib/libXt.so.6
#4  0x2825ead4 in RealizeWidget () from /usr/X11R6/lib/libXt.so.6
#5  0x2825ead4 in RealizeWidget () from /usr/X11R6/lib/libXt.so.6
#6  0x2825ead4 in RealizeWidget () from /usr/X11R6/lib/libXt.so.6
#7  0x2825eb6c in XtRealizeWidget () from /usr/X11R6/lib/libXt.so.6
#8  0x8053e24 in init_windows (b=0x816c000, argc=0xbfbfdae8, argv=0xbfbfdbd0)
    at window.c:2422
#9  0x806d9d3 in realmain (argc=1, argv=0xbfbfdbd0) at main.c:147
#10 0x28106e4b in gh_launch_pad () from /usr/local/lib/libguile.so.4
#11 0x804deb5 in _start ()
(gdb) up
#1  0x807af00 in Realize (w=0x81adc00, valueMask=0xbfbfd2fc, 
    attributes=0xbfbfd300) at TextField.c:293
[...]
(gdb) p rtw->text.xim
$1 = (struct _XIM *) 0x0
(gdb) p name
$2 = 0x816d400 "siag"
(gdb) p class
$3 = 0x816d405 "Siag"
(gdb) p XtDatabase(dpy)
$4 = 135742608


name of display:    :0.0
version number:    11.0
vendor string:    Xi Graphics, Inc.
vendor release number:    5001
maximum request size:  4194300 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    8
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 12, bits_per_pixel 16, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 167
focus:  window 0x440000f, revert to PointerRoot
number of extensions:    17
    BIG-REQUESTS
    DOUBLE-BUFFER
    DPMS
    MIT-SCREEN-SAVER
    MIT-SHM
    MIT-SUNDRY-NONSTANDARD
    RECORD
    SECURITY
    SHAPE
    SYNC
    X3D-PEX
    XC-MISC
    XIE
    XInputExtension
    XTEST
    XiG-SMT
    XiG-SUNDRY-NONSTANDARD
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1600x1200 pixels (542x406 millimeters)
  resolution:    75x75 dots per inch
  depths (2):    1, 16
  root window id:    0x54
  depth of root window:    16 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x52
  default number of colormap cells:    64
  preallocated pixels:    black 0, white 65535
  options:    backing-store NO, save-unders NO
  largest cursor:    64x64
  current input event mask:    0xf8603f
    KeyPressMask             KeyReleaseMask           ButtonPressMask          
    ButtonReleaseMask        EnterWindowMask          LeaveWindowMask          
    ButtonMotionMask         KeymapStateMask          SubstructureNotifyMask   
    SubstructureRedirectMask FocusChangeMask          PropertyChangeMask       
    ColormapChangeMask       
  number of visuals:    5
  default visual id:  0x20
  visual:
    visual id:    0x20
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x21
    class:    DirectColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x22
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x23
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x24
    class:    TrueColor
    depth:    16 planes
    available colormap entries:    64 per subfield
    red, green, blue masks:    0xf800, 0x7e0, 0x1f
    significant bits in color specification:    8 bits


name of display:    :0.0
version number:    11.0
vendor string:    Xi Graphics
vendor release number:    3100
maximum request size:  4194300 bytes
motion buffer size:  256
bitmap unit, bit order, padding:    32, LSBFirst, 32
image byte order:    LSBFirst
number of supported pixmap formats:    7
supported pixmap formats:
    depth 1, bits_per_pixel 1, scanline_pad 32
    depth 4, bits_per_pixel 8, scanline_pad 32
    depth 8, bits_per_pixel 8, scanline_pad 32
    depth 15, bits_per_pixel 16, scanline_pad 32
    depth 16, bits_per_pixel 16, scanline_pad 32
    depth 24, bits_per_pixel 32, scanline_pad 32
    depth 32, bits_per_pixel 32, scanline_pad 32
keycode range:    minimum 8, maximum 167
focus:  window 0x1c00009, revert to PointerRoot
number of extensions:    15
    BIG-REQUESTS
    DOUBLE-BUFFER
    MIT-SCREEN-SAVER
    MIT-SHM
    MIT-SUNDRY-NONSTANDARD
    RECORD
    SHAPE
    SYNC
    X3D-PEX
    XC-MISC
    XIE
    XIdle
    XTEST
    XTestExtension1
    XsightExtension
default screen number:    0
number of screens:    1

screen #0:
  dimensions:    1600x1200 pixels (542x406 millimeters)
  resolution:    75x75 dots per inch
  depths (2):    1, 8
  root window id:    0x28
  depth of root window:    8 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x26
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 1
  options:    backing-store YES, save-unders YES
  largest cursor:    64x64
  current input event mask:    0xf8603f
    KeyPressMask             KeyReleaseMask           ButtonPressMask          
    ButtonReleaseMask        EnterWindowMask          LeaveWindowMask          
    ButtonMotionMask         KeymapStateMask          SubstructureNotifyMask   
    SubstructureRedirectMask FocusChangeMask          PropertyChangeMask       
    ColormapChangeMask       
  number of visuals:    6
  default visual id:  0x20
  visual:
    visual id:    0x20
    class:    PseudoColor
    depth:    8 planes
    available colormap entries:    256
    red, green, blue masks:    0x0, 0x0, 0x0
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x21
    class:    TrueColor
    depth:    8 planes
    available colormap entries:    8 per subfield
    red, green, blue masks:    0xe0, 0x1c, 0x3
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x22
    class:    StaticGray
    depth:    8 planes
    available colormap entries:    256
    red, green, blue masks:    0x0, 0x0, 0x0
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x23
    class:    GrayScale
    depth:    8 planes
    available colormap entries:    256
    red, green, blue masks:    0x0, 0x0, 0x0
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x24
    class:    DirectColor
    depth:    8 planes
    available colormap entries:    8 per subfield
    red, green, blue masks:    0xe0, 0x1c, 0x3
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x25
    class:    StaticColor
    depth:    8 planes
    available colormap entries:    256
    red, green, blue masks:    0x0, 0x0, 0x0
    significant bits in color specification:    8 bits