applications segfaulting in gnustep-back on OpenBSD sparc64

[Sebastian Reitenbach]

Hi,

with my adventures on getting gnustep to work on the sparc64 OpenBSD platform, 
and even with the warnings I still get with -base, I thought I compile a couple 
of apps, and try how it works. However, all segfault in the same spot in 
gnustep-back, below an example of Affiche. I use gnustep from svn, together 
with libobjc2, using cairo backend.

(gdb) r 
Starting program: /usr/local/bin/Affiche 
2011-11-03 18:06:17.840 Affiche[26421] Did not find correct version of backend 
(libgnustep-back-020.bundle), falling back to std (libgnustep-back.bundle).

Program received signal SIGSEGV, Segmentation fault.
0x0000000212716348 in bestContext (dpy=0x2051f6db0, screen_number=0, 
context=0x20a35ff00) at context.c:841
841                 if ((pictFormat->type == PictTypeDirect)
(gdb) thread apply all bt
(gdb) bt
#0  0x0000000212716348 in bestContext (dpy=0x2051f6db0, screen_number=0, 
context=0x20a35ff00) at context.c:841
#1  0x0000000212715ea0 in RCreateContext (dpy=0x2051f6db0, screen_number=0, 
attribs=0x0) at context.c:701
#2  0x00000002127226a0 in -[XGScreenContext initForDisplay:screen:] 
(self=0x207fd6c28, _cmd=0x2129859b0, dpy=0x2051f6db0, 
    screen_number=0) at XGServer.m:180
#3  0x00000002127244dc in -[XGServer _screenContextForScreen:] 
(self=0x20fa6fc08, _cmd=0x2129859c0, screen_number=0)
    at XGServer.m:519
#4  0x00000002127245dc in -[XGServer xrContextForScreen:] (self=0x20fa6fc08, 
_cmd=0x212988b68, screen_number=0) at XGServer.m:534
#5  0x0000000212739ed8 in -[XGServer(WindowOps) window::::] (self=0x20fa6fc08, 
_cmd=0x2027e0b10, frame=
        {origin = {x = 0, y = 0}, size = {width = 0, height = 0}}, 
type=NSBackingStoreRetained, style=64, screen=0)
    at XGServerWindow.m:1965
#6  0x00000002023852b8 in -[NSWindow _initBackendWindow] (self=0x205240e08, 
_cmd=0x2027e0c70) at NSWindow.m:916
#7  0x0000000202386678 in -[NSWindow 
initWithContentRect:styleMask:backing:defer:] (self=0x205240e08, 
_cmd=0x2027e0970, 
    contentRect={origin = {x = 0, y = 0}, size = {width = 0, height = 0}}, 
aStyle=64, bufferingType=NSBackingStoreRetained, 
    flag=0 '\0') at NSWindow.m:1063
#8  0x00000002023869e0 in -[NSWindow 
initWithContentRect:styleMask:backing:defer:screen:] (self=0x205240e08, 
_cmd=0x2026eae88, 
    contentRect={origin = {x = 0, y = 0}, size = {width = 0, height = 0}}, 
aStyle=64, bufferingType=NSBackingStoreRetained, 
    flag=0 '\0', aScreen=0x0) at NSWindow.m:1113
#9  0x0000000202055e68 in -[NSApplication(Private) _appIconInit] 
(self=0x205161708, _cmd=0x2026ea288) at NSApplication.m:3789
#10 0x0000000202044b6c in -[NSApplication _init] (self=0x205161708, 
_cmd=0x2026ea2a8) at NSApplication.m:921
#11 0x0000000210308d1c in -[NSObject performSelector:withObject:] 
(self=0x205161708, _cmd=0x21087fa28, aSelector=0x2026ea2a8, 
    anObject=0x205161708) at NSObject.m:2011
#12 0x00000002103d1ff0 in -[NSObject(NSThreadPerformAdditions) 
performSelector:onThread:withObject:waitUntilDone:modes:] (
    self=0x205161708, _cmd=0x21087fb68, aSelector=0x2026ea2a8, 
aThread=0x205160408, anObject=0x205161708, aFlag=1 '\001', 
    anArray=0x211492748) at NSThread.m:1239
#13 0x00000002103d1e00 in -[NSObject(NSThreadPerformAdditions) 
performSelectorOnMainThread:withObject:waitUntilDone:modes:] (
    self=0x205161708, _cmd=0x21087fb78, aSelector=0x2026ea2a8, 
anObject=0x205161708, aFlag=1 '\001', anArray=0x211492748)
    at NSThread.m:1194
#14 0x00000002103d1ea4 in -[NSObject(NSThreadPerformAdditions) 
performSelectorOnMainThread:withObject:waitUntilDone:] (
    self=0x205161708, _cmd=0x2026ea2b8, aSelector=0x2026ea2a8, 
anObject=0x205161708, aFlag=1 '\001') at NSThread.m:1205
#15 0x0000000202044dd4 in -[NSApplication init] (self=0x205161708, 
_cmd=0x2026e9d88) at NSApplication.m:975
#16 0x0000000202044360 in +[NSApplication sharedApplication] (self=0x2026e90b0, 
_cmd=0x326c30) at NSApplication.m:847
#17 0x000000000010b178 in gnustep_base_user_main (argc=1, 
argv=0xfffffffffffd72e8, env=0xfffffffffffd72f8) at Affiche.m:678
#18 0x0000000210353310 in main (argc=1, argv=0xfffffffffffd72e8, 
env=0xfffffffffffd72f8) at NSProcessInfo.m:978
#19 0x0000000000101eac in _start ()
#20 0x0000000000101eac in _start ()
Previous frame identical to this frame (corrupt stack?)
(gdb) frame 0
#0  0x0000000212716348 in bestContext (dpy=0x2051f6db0, screen_number=0, 
context=0x20a35ff00) at context.c:841
841                 if ((pictFormat->type == PictTypeDirect)
(gdb) list
836           {
837             for (i=numvis-1, best = -1; i>=0; i--)
838               {
839                 XRenderPictFormat* pictFormat = 
840                     XRenderFindVisualFormat (dpy, vinfo[i].visual);
841                 if ((pictFormat->type == PictTypeDirect)
842                     && (pictFormat->direct.alphaMask))
843                   {
844                     best = i;       
845                   }
(gdb) print dpy
$1 = (Display *) 0x2051f6db0
(gdb) print vinfo
$2 = (XVisualInfo *) 0x20c462000
(gdb) print i
$3 = 0
(gdb) print numvis
$4 = 1
(gdb) print vinfo[i].visual
$5 = (Visual *) 0x200bd27c0
(gdb) print *vinfo[i].visual
$6 = {ext_data = 0x0, visualid = 82, class = 4, red_mask = 16711680, green_mask 
= 65280, blue_mask = 255, bits_per_rgb = 8, 
  map_entries = 256}
(gdb) print *dpy
$7 = <incomplete type>
(gdb)