Package: xlibs Version: 4.0.3-4 Severity: normal Compile the attached file with g++ -g -o xft xft.cpp -lqt
Yes, it is involving libqt-dev as such I CC'd debian-kde. While attempting to determine what was going on, I installed xlibs-dbg, apt-get source xlibs, pointed gdb at everything, stepped, bt'd, etc.. I even managed to produce a segfault in gdb !!-( After compiling, this simple file when run produces this BT: #0 XAddExtension (dpy=0x0) at InitExt.c:80 #1 0x2b2fc048 in _XftDisplayInfoGet (dpy=0x0) at xftdpy.c:75 #2 0x2b2fc0e6 in XftDefaultHasRender (dpy=0x0) at xftdpy.c:99 #3 0x2ac2cf6e in qt_use_xft () from /usr/lib/libqt.so.2 #4 0x804863b in main () at xft.cpp:7 #5 0x2b00b38b in __libc_start_main () from /lib/libc.so.6 After much digging, (I'm new to X source ..), I found it has a problem with LockDisplay(dpy). LockDisplay is a macro from xc/lib/X11/Xlibint.h: #if defined(XTHREADS_WARN) || defined(XTHREADS_FILE_LINE) #define LockDisplay(d) if ((d)->lock_fns) (*(d)->lock_fns->lock_display)((d),__FILE__,__LINE__) ... #else #define LockDisplay(d) if ((d)->lock_fns) (*(d)->lock_fns->lock_display)(d) At this point, I note that dpy is type = struct _XDisplay, and LockDisplay is called with dpy as the arg from InitExt.c. I used gdb to (gdb) ptype dpy->lock_fns type = struct _XLockPtrs { void (*lock_display)(); void (*unlock_display)(); } * (gdb) p Segmentation fault (core dumped) So there appears to be a problem here... this ^^ is gdb segfaulting.. while trying to debug this simple little program. Anyone have any clues? *** xft.cpp #define QT_XFT #include <qt_x11.h> #include <qcolor.h> int main () { int x = qt_use_xft (); return x; } -- System Information Debian Release: testing/unstable Architecture: i386 Kernel: Linux debian-home 2.2.19 #1 Sat May 19 16:25:04 CDT 2001 i686 Locale: LANG=en_US, LC_CTYPE=en_US Versions of packages xlibs depends on: ii libc6 2.2.3-6 GNU C Library: Shared libraries an ii libfreetype6 2.0.2.20010514-1 FreeType 2 font engine, shared lib ii xfree86-common 4.0.3-4 X Window System (XFree86) infrastr ii xlibs 4.0.3-4 X Window System client libraries -- Gordon Sadler