Yegappan Lakshmanan wrote:
> On Fri, Apr 12, 2013 at 1:20 PM, Christian Brabandt <[email protected]>
> wrote:
> > Hi Yegappan!
> >
> > On Do, 11 Apr 2013, Yegappan Lakshmanan wrote:
> >
> >> Hi all,
> >>
> >> I am running Vim 7.3.831 on a Linux system built with GTK 2.0.
> >> When I execute the following steps, Vim crashes:
> >>
> >> 1. Open an empty buffer
> >> 2. Enter insert mode using 'i'
> >> 3. Insert 262040 characters using <CTRL-R>=repeat('a', 262040)
> >> 4. Press <Esc>
> >> 5. Select and yank all the characters using 'V' and 'y'
> >> 6. Wait for a few seconds and move the cursor
> >>
> >> The crash traceback is below:
> >>
> >> #0 0x0048dfb9 in free () from /lib/tls/libc.so.6
> >> #1 0x0088c3a3 in XtFree () from /usr/X11R6/lib/libXt.so.6
> >> #2 0x008ad502 in XtAppGetSelectionTimeout () from
> >> /usr/X11R6/lib/libXt.so.6
> >> #3 0x008a7144 in _XtRemoveAllInputs () from /usr/X11R6/lib/libXt.so.6
> >> #4 0x008a74b2 in XtAppNextEvent () from /usr/X11R6/lib/libXt.so.6
> >> #5 0x08139ae4 in xterm_update () at os_unix.c:6824
> >> #6 0x08138089 in RealWaitForChar (fd=0, msec=0, check_for_gpm=0x0) at
> >> os_unix.c:5200 U __be_errno_kernel_to_ios
> >> #7 0x08137e74 in mch_breakcheck () at os_unix.c:4847
> >> #8 0x080dcc85 in vgetorpeek (advance=1) at getchar.c:2014
> >> #9 0x080db494 in vgetc () at getchar.c:1582
> >> #10 0x080db90f in safe_vgetc () at getchar.c:1787
> >> #11 0x0811437c in normal_cmd (oap=0xbfff85d0, toplevel=1) at normal.c:665
> >> #12 0x081b649e in main_loop (cmdwin=0, noexmode=0) at main.c:1306
> >> #13 0x081b5c70 in main (argc=0, argv=0x0) at main.c:1010
> >>
> >> I can consistently reproduce this crash. I couldn't reproduce this crash
> >> with
> >> the earlier Vim 7.2 release.
> >>
> >> Anyone else able to reproduce this crash?
> >
> > I was able to reproduce the crash just once and then I couldn't
> > reproduce it anymore. It seems that something in the X-libraries
> > (starting with XtAppnextEvent()) is going wrong. (I got a double free()
> > error in free())
> >
>
> I spent some time trying to narrow down the patch that introduced
> this problem. I am not able to reproduce the crash with the
> 7.2.446 release. But I am able to reproduce the crash with Vim 7.3
> version.
>
> I found that the following change to os_unix.c fixes the crash:
>
> *** os_unix.c.orig 2013-04-15 21:05:25.000000000 -0700
> --- os_unix.c 2013-04-15 21:12:38.000000000 -0700
> *************** setup_term_clip()
> *** 6465,6471 ****
> return;
>
> x11_setup_atoms(xterm_dpy);
> - x11_setup_selection(xterm_Shell);
> if (x11_display == NULL)
> x11_display = xterm_dpy;
>
> --- 6465,6470 ----
>
> This line was introduced in the 7.3 Vim release.
Interesting. This line was added for good reasons, to fix the problems
with not using a proper timestamp when owning the selection.
Thus removing the line is not the way to fix your problem.
Perhaps something in clip_x11_timestamp_cb() is causing the problem?
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