[Pkg-fonts-devel] Bug#656359: Bug#656359: Bug#656359: fontforge: Segfault when pressing modifier/arrow keys if more than 4 points are selected
john.knightley at gmail.com
Thu Jan 19 00:45:19 UTC 2012
To the best of my knowledge this error occurs because of a change in
something that fontforge is dependent upon not because of a change in
fontforge itself the same error occurs if one puts an older version of
fontforge on a newer Linux. I got the same error when I upgrade
unbuntu-9.10 to ubuntu-10.04, and also when I tried running fontforge on
PuppyLinux, both using a 2009 build. I thought briefly by using a newer
build had solved this, but on checking the further it is still there - just
that it a few case one can use these keys. The widgets for fontforge where
written by George Williams himself which may make check dependencies a
little harder. Of course saying this does not mean that changing the
depends list will solve the problem but it is a good place to start.
On Thu, Jan 19, 2012 at 6:36 AM, Daniel Kahn Gillmor
<dkg at fifthhorseman.net>wrote:
> On 01/18/2012 01:33 PM, Theppitak Karoonboonyanan wrote:
> > Package: fontforge
> > Version: 0.0.20110222-6
> > Severity: grave
> > Fontforge consistently crashes (segmentation fault) when pressing any
> > modifier key (Ctrl, Alt or Shift) or arrow key if more than 4 points are
> > currently selected. This is annoying for font editing, as all keyboard
> > shortcuts become virtually crippled. And the crash can cause the loss of
> > unsaved data.
> > Steps to reproduce:
> > - Start fontforge and create a new font.
> > - Randomly choose a first glyph to edit.
> > - Draw splines with at least 5 points.
> > - Select up to 4 points and press a modifier or arrow key. It won't
> > - Select at least 5 points and press a modifier or arrow key. It will
> > always crash.
> I can reproduce this on an i386 system with the same version of
> fontforge. :(
> When trying to get a backtrace with fontforge-dbg 0.0.20110222-6
> installed, i get the following error message (twice) from gdb:
> warning: the debug information found in
> "/usr/lib/debug//usr/bin/fontforge" does not match "/usr/bin/fontforge"
> (CRC mismatch).
> Pressing ahead anyway, i can trigger the segfault, and i get this
> (partially-mangled) backtrace:
> xb7c7ec4c in CVLayer (cv=0x86a3858) at cvundoes.c:552
> 552 cvundoes.c: No such file or directory.
> in cvundoes.c
> (gdb) bt
> #0 0xb7c7ec4c in CVLayer (cv=0x86a3858) at cvundoes.c:552
> #1 0x0808faf0 in ?? ()
> #2 0xb7b97518 in GMenuSearchShortcut (gw=0x85f70f0, mi=<optimized out>,
> 0xbfffe8c8, call_moveto=1) at gmenu.c:951
> #3 0xb7b9bc5c in GMenuBarCheckKey (g=0x85f7200, event=0xbfffe8c8)
> at gmenu.c:1500
> #4 0xb7b6ce4d in _GWidget_TopLevel_Key (top=<optimized out>, ew=0x85fd7f0,
> event=0xbfffe8c8) at gcontainer.c:498
> #5 0xb7b6e1a7 in _GWidget_Container_eh (gw=0x85fd7f0, event=0xbfffe8c8)
> at gcontainer.c:337
> #6 0xb7bcbe74 in dispatchEvent (gdisp=<optimized out>, event=0xbfffea7c)
> at gxdraw.c:3869
> #7 0xb7bcd21c in GXDrawEventLoop (gd=0x8439f48) at gxdraw.c:3968
> #8 0xb7b7097b in GDrawEventLoop (gdisp=<optimized out>) at gdraw.c:748
> #9 0x08061f5a in ?? ()
> #10 0xb6bcbe46 in __libc_start_main (main=0x80611b0, argc=1, ubp_av=
> 0xbffff864, init=0x81c8660, fini=0x81c8650, rtld_fini=0xb7ff1310,
> stack_end=0xbffff85c) at libc-start.c:228
> #11 0x08062cd1 in ?? ()
> Backtrace stopped: Not enough registers or memory available to unwind
> hope this is helpful in debugging,
> Pkg-fonts-devel mailing list
> Pkg-fonts-devel at lists.alioth.debian.org
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