Bug 437928

Summary: Xterm crashes on startup
Product: [Fedora] Fedora Reporter: Vitaly Mayatskikh <vmayatsk>
Component: xtermAssignee: Miroslav Lichvar <mlichvar>
Status: CLOSED CURRENTRELEASE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: high    
Version: 8CC: dickey, pertusus
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: 235-1.fc8 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2008-05-10 09:58:06 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Attachments:
Description Flags
Do not serve expose events while not initialized none

Description Vitaly Mayatskikh 2008-03-18 04:08:56 EDT
Xterm begins to handle expose events before it finishes to initialize itself.

$ gdb xterm
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This GDB was configured as "x86_64-redhat-linux-gnu"...
Using host libthread_db library "/lib64/libthread_db.so.1".
(gdb) break VTRun
Breakpoint 1 at 0x414190: file ./charproc.c, line 4787.
(gdb) r
Starting program: /usr/bin/xterm 

Program received signal SIGSEGV, Segmentation fault.
0x0000000000430d07 in handle_translated_exposure (xw=0x681c30, rect_x=0,
rect_y=0, rect_width=499, rect_height=316) at ./util.c:1684
1684	    leftcol = x0 / CurFontWidth(screen, screen->cur_row);
Missing separate debuginfos, use: debuginfo-install expat.x86_64 libXau.x86_64
libXcursor.x86_64 libXdmcp.x86_64 libXfixes.x86_64 libXpm.x86_64 libxcb.x86_64
(gdb) bt
#0  0x0000000000430d07 in handle_translated_exposure (xw=0x681c30, rect_x=0,
rect_y=0, rect_width=499, rect_height=316) at ./util.c:1684
#1  0x0000000000423d34 in Redraw () at ./misc.c:1258
#2  0x000000000042ce27 in ScrollBarOn (xw=0x681c30, init=<value optimized out>,
doalloc=1) at ./scrollbar.c:495
#3  0x0000000000415f6a in VTRealize (w=0x681c30, valuemask=0x7fffc341c2d8,
values=0x7fffc341c240) at ./charproc.c:6348
#4  0x0000003e21829166 in RealizeWidget (widget=0x681c30) at Intrinsic.c:306
#5  0x0000003e218292ae in RealizeWidget (widget=0x672790) at Intrinsic.c:355
#6  0x0000003e21829550 in XtRealizeWidget (widget=<value optimized out>) at
Intrinsic.c:385
#7  0x000000000040eb2b in VTInit () at ./charproc.c:5007
#8  0x000000000041dea3 in spawnXTerm (xw=0x681c30) at ./main.c:3227
#9  0x000000000041fb8f in main (argc=0, argv=<value optimized out>) at ./main.c:2274
#10 0x0000003e0c81e074 in __libc_start_main (main=0x41f340 <main>, argc=1,
ubp_av=0x7fffc341d8c8, init=<value optimized out>, fini=<value optimized out>,
rtld_fini=<value optimized out>, 
    stack_end=0x7fffc341d8b8) at libc-start.c:220
#11 0x0000000000406a39 in _start ()
(gdb) print screen->visbuf
$1 = (ScrnBuf) 0x16000
(gdb) print screen->allbuf
$2 = (ScrnBuf) 0x0
(gdb)

handle_translated_exposure() fires before VTRun() has a chance to call to
VTallocbuf() and allocate memory for terminal buffer.
Comment 1 Vitaly Mayatskikh 2008-03-18 04:08:57 EDT
Created attachment 298345 [details]
Do not serve expose events while not initialized
Comment 2 Vitaly Mayatskikh 2008-03-18 05:52:36 EDT
This happens permanently with xterm-234 under StumpWM window manager when
compiled with CLisp, but it's ok when StumpWM compiled with SBCL.
Comment 3 Fedora Update System 2008-04-22 13:05:25 EDT
xterm-235-1.fc8 has been submitted as an update for Fedora 8
Comment 4 Fedora Update System 2008-04-22 18:43:54 EDT
xterm-235-1.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update xterm'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F8/FEDORA-2008-3267
Comment 5 Fedora Update System 2008-05-10 09:58:04 EDT
xterm-235-1.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.