Bug#138578: marked as done (libxaw7: SEGV in TextFocusOut())
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From: Hans Wilmer <lee@yun.yagibdah.de>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: libxaw7: segmentation faults
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Date: Sat, 16 Mar 2002 15:45:28 +0100
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Package: libxaw7
Version: 4.1.0-9
Severity: normal
Program received signal SIGSEGV, Segmentation fault.
TextFocusOut (w=0x812cc48, event=0xbfd50540, p=0x0, n=0x400c7c74) at TextAction.c:2914
in TextAction.c
(gdb) backtrace
#0 TextFocusOut (w=0x812cc48, event=0xbfd50540, p=0x0, n=0x400c7c74) at TextAction.c:2914
#1 0x40051557 in TextFocusIn (w=0x812e558, event=0xbfd50540, p=0x0, n=0x400c7c74) at TextAction.c:2896
#2 0x400b8593 in HandleActions (w=0x812e558, event=0xbfd50540, stateTree=0x81c1990, accelWidget=0x0, procs=0x81dbd44, actions=0x400c7c6c) at TMstate.c:628
#3 0x400b8a0c in HandleSimpleState (w=0x812e558, tmRecPtr=0x812e588, curEventPtr=0xbfd50478) at TMstate.c:866
#4 0x400b8f24 in _XtTranslateEvent (w=0x812e558, event=0xbfd50540) at TMstate.c:1084
#5 0x400965a2 in XtDispatchEventToWidget (widget=0x812e558, event=0xbfd50540) at Event.c:981
#6 0x4009777c in _XtSendFocusEvent (child=0x812e558, type=9) at Event.c:1711
#7 0x4009eafc in _XtHandleFocus (widget=0x812ebe0, client_data=0x812d520, event=0xbfd50640, cont=0xbfd505eb "\001¸Õ\022\b¾F\021@tn\f@àë\022\b@\006Õ¿\bO\f@") at Keyboard.c:600
#8 0x4009657f in XtDispatchEventToWidget (widget=0x812ebe0, event=0xbfd50640) at Event.c:976
#9 0x4009777c in _XtSendFocusEvent (child=0x812ebe0, type=9) at Event.c:1711
#10 0x4009eafc in _XtHandleFocus (widget=0x812e980, client_data=0x812d5b8, event=0xbfd507ec, cont=0xbfd506eb "\001¸Õ\022\b¾F\021@tn\f@\200é\022\bLé\t@\232l\t@ È\017\b") at Keyboard.c:600
#11 0x4009653f in XtDispatchEventToWidget (widget=0x812e980, event=0xbfd507ec) at Event.c:957
#12 0x40096d6e in _XtDefaultDispatcher (event=0xbfd507ec) at Event.c:1415
#13 0x40097108 in XtDispatchEvent (event=0xbfd507ec) at Event.c:1499
#14 0x0809d35b in PopupDialog ()
#15 0x0809bc17 in GetString ()
#16 0x08075ba3 in zoom (w=0x400c6e74, in=0x80f8200 "f", ud=136059280, data=0x400b872e) at keyboard.c:2618
#17 0x5f007472 in ?? ()
Cannot access memory at address 0x66
(gdb)
The function 'zoom' is part of my own program. It calls GetString()
which is part of a library called libsx. PopupDialog() is probably
also part of the libsx. --- Before upgrading from Debian 2.2 r_0/r_2
to Woody the problem reported here didn't exist, and neither the
libsx, nor my program has changed in a way that could summon the
problem.
The problem is not so easy to reproduce because it doesn't occur each
time the GetString() function is called. GetString() may be called 1,
5 or 10 times before it fails, and also my not fail at all (when
called 100 times or so :/ I wrote a small program to help debugging
(see below), but I couldn't produce the problem with that program.
If you need it, I can supply the complete source code of my program
and of the libsx.
// testing program:
#include <stdio.h>
#include <libsx.h>
void bt_close(Widget ign, void *w)
{
Widget x = *( (Widget *)w);
if(w) {
SetCurrentWindow(x);
CloseWindow();
exit(0);
}
else {
puts("no window to close");
}
}
void bt_gs(Widget ign, void *none)
{
char *cptr;
int n;
for(n = 0; n < 10; n++) {
cptr = GetString("This is a rather long label that should provoce a failure.", NULL);
if(cptr) {
puts(cptr);
}
}
}
int main(int argc, char *argv[] )
{
Widget w, b1, b2;
argc = OpenDisplay(argc, argv);
if (argc == 0) {
exit(1);
}
w = MakeWindow("debuglib", SAME_DISPLAY, NONEXCLUSIVE_WINDOW);
b1 = MakeButton("Close", bt_close, (void *)(&w) );
b2 = MakeButton("GetString()", bt_gs, (void *)NULL);
SetWidgetPos(b2, PLACE_RIGHT, b1, NO_CARE, NULL);
MainLoop();
return 0;
}
// Makefile for the testing program:
OBJ = debuglib.o
SRC = debuglib.c
OPTS = -march=i686 \
-O6 \
-Wall \
-finline-functions \
-malign-loops=2 \
-malign-jumps=2 \
-malign-functions=2 \
-funroll-loops \
-fexpensive-optimizations \
-fomit-frame-pointer
# -ggdb
CC = gcc $(OPTS)
LIBSX = /usr/local/lib/libsx.a
LIB = $(LIBSX) -lXaw -lXmu -lXt -lX11 -lXext -L/usr/X11R6/lib
debuglib: $(OBJ) Makefile
$(CC) -o debuglib $(OBJ) $(LIB)
//
To compile the testing program, you need the libsx. You can get
version 1.2 from www.yagibdah.de.
Let me know if I can do something else to help finding the bug.
gcc version 2.95.4 20011006 (Debian prerelease)
-- System Information
Debian Release: 3.0
Architecture: i386
Kernel: Linux yun 2.4.18 #9 Wed Feb 27 17:46:58 CET 2002 i686
Locale: LANG=C, LC_CTYPE=de_DE
Versions of packages libxaw7 depends on:
ii libc6 2.2.4-5 GNU C Library: Shared libraries an
ii xlibs 4.1.0-9 X Window System client libraries
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From: David =?iso-8859-15?q?Mart=EDnez_Moreno?= <ender@debian.org>
Organization: Debian
To: Hans Wilmer <lee@yun.yagibdah.de>
Subject: Bug fixed.
Date: Mon, 9 Jan 2006 12:53:13 +0100
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Hello, Hans. It seems that at least X.Org 6.9 includes a fix for your bug=
=20
report, so I am closing this bug.
Please reopen if necessary.
Best regards,
Ender.
=2D-=20
=2D Kyle, all those times I said you were a dumb, stupid Jew,
well, I was wrong, you're not a Jew.
=2D Cartman, I *am* Jewish!
=2D There, there, don't be hard on yourself, Kyle.
-- Cartman & Kyle (South Park).
=2D-
Desarrollador de Debian
Debian developer
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