It could be, I am not sure, I think the callback pointer might have gotten
corrupted somehow, here is a paste of the backtrace from ./dtksh
examples/XdrawTest, the script specifically segfaults when the "clear window"
button is used.
Here is a paste of the backtrace from gdb:
host# ./dtksh examples/XdrawTest
36
dtksh(99295) in free(): bogus pointer (double free?) 0x633d4994d0
Abort trap (core dumped)
host# gdb ./dtksh dtksh.core
GNU gdb 6.3
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This GDB was configured as "amd64-unknown-openbsd6.7"...
Core was generated by `dtksh'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/lib/libpthread.so.26.1...done.
Loaded symbols for /usr/lib/libpthread.so.26.1
Loaded symbols for /home/cde/cde/programs/dtksh/dtksh
Reading symbols from /usr/dt/lib/libDtHelp.so.2.1...done.
Loaded symbols for /usr/dt/lib/libDtHelp.so.2.1
Reading symbols from /usr/dt/lib/libDtWidget.so.2.1...done.
Loaded symbols for /usr/dt/lib/libDtWidget.so.2.1
Reading symbols from /usr/dt/lib/libDtSvc.so.2.1...done.
Loaded symbols for /usr/dt/lib/libDtSvc.so.2.1
Reading symbols from /usr/dt/lib/libDtPrint.so.2.1...done.
Loaded symbols for /usr/dt/lib/libDtPrint.so.2.1
Reading symbols from /usr/dt/lib/libtt.so.2.1...done.
Loaded symbols for /usr/dt/lib/libtt.so.2.1
Reading symbols from /usr/local/lib/libXm.so.6.1...done.
Loaded symbols for /usr/local/lib/libXm.so.6.1
Reading symbols from /usr/X11R6/lib/libXt.so.11.0...done.
Loaded symbols for /usr/X11R6/lib/libXt.so.11.0
Reading symbols from /usr/X11R6/lib/libSM.so.9.0...done.
Loaded symbols for /usr/X11R6/lib/libSM.so.9.0
Reading symbols from /usr/X11R6/lib/libICE.so.11.0...done.
Loaded symbols for /usr/X11R6/lib/libICE.so.11.0
Reading symbols from /usr/X11R6/lib/libXext.so.13.0...done.
Loaded symbols for /usr/X11R6/lib/libXext.so.13.0
Reading symbols from /usr/X11R6/lib/libX11.so.17.0...done.
Loaded symbols for /usr/X11R6/lib/libX11.so.17.0
Reading symbols from /usr/lib/libm.so.10.1...done.
Loaded symbols for /usr/lib/libm.so.10.1
Reading symbols from /usr/local/lib/libiconv.so.7.0...done.
Loaded symbols for /usr/local/lib/libiconv.so.7.0
Reading symbols from /usr/lib/libc.so.96.0...done.
Loaded symbols for /usr/lib/libc.so.96.0
Reading symbols from /usr/lib/libc++.so.4.0...done.
Loaded symbols for /usr/lib/libc++.so.4.0
Reading symbols from /usr/lib/libc++abi.so.2.1...done.
Loaded symbols for /usr/lib/libc++abi.so.2.1
Symbols already loaded for /usr/lib/libpthread.so.26.1
Reading symbols from /usr/X11R6/lib/libXinerama.so.6.0...done.
Loaded symbols for /usr/X11R6/lib/libXinerama.so.6.0
Reading symbols from /usr/X11R6/lib/libXmu.so.11.0...done.
Loaded symbols for /usr/X11R6/lib/libXmu.so.11.0
Reading symbols from /usr/X11R6/lib/libxcb.so.4.0...done.
Loaded symbols for /usr/X11R6/lib/libxcb.so.4.0
Reading symbols from /usr/X11R6/lib/libXft.so.12.0...done.
Loaded symbols for /usr/X11R6/lib/libXft.so.12.0
Reading symbols from /usr/X11R6/lib/libfontconfig.so.13.0...done.
Loaded symbols for /usr/X11R6/lib/libfontconfig.so.13.0
Reading symbols from /usr/X11R6/lib/libfreetype.so.30.0...done.
Loaded symbols for /usr/X11R6/lib/libfreetype.so.30.0
Reading symbols from /usr/lib/libz.so.5.0...done.
Loaded symbols for /usr/lib/libz.so.5.0
Reading symbols from /usr/lib/libexpat.so.12.0...done.
Loaded symbols for /usr/lib/libexpat.so.12.0
Reading symbols from /usr/X11R6/lib/libXrender.so.6.0...done.
Loaded symbols for /usr/X11R6/lib/libXrender.so.6.0
Reading symbols from /usr/local/lib/libjpeg.so.70.0...done.
Loaded symbols for /usr/local/lib/libjpeg.so.70.0
Reading symbols from /usr/local/lib/libpng.so.18.0...done.
Loaded symbols for /usr/local/lib/libpng.so.18.0
Reading symbols from /usr/X11R6/lib/libXau.so.10.0...done.
Loaded symbols for /usr/X11R6/lib/libXau.so.10.0
Reading symbols from /usr/X11R6/lib/libXdmcp.so.11.0...done.
Loaded symbols for /usr/X11R6/lib/libXdmcp.so.11.0
Reading symbols from /usr/libexec/ld.so...Error while reading shared library
symbols:
Dwarf Error: wrong version in compilation unit header (is 4, should be 2) [in
module /usr/libexec/ld.so]
Reading symbols from /usr/X11R6/lib/libXcursor.so.5.0...done.
Loaded symbols for /usr/X11R6/lib/libXcursor.so.5.0
Reading symbols from /usr/X11R6/lib/libXfixes.so.6.0...done.
Loaded symbols for /usr/X11R6/lib/libXfixes.so.6.0
#0 thrkill () at -:3
3 -: No such file or directory.
in -
(gdb) bt
#0 thrkill () at -:3
#1 0x00000063de96e4ae in _libc_abort () at /usr/src/lib/libc/stdlib/abort.c:51
#2 0x00000063de9b7336 in wrterror (d=Variable "d" is not available.
)
at /usr/src/lib/libc/stdlib/malloc.c:300
#3 0x00000063de9ba519 in findpool (p=0x633d4994d0, argpool=Variable "argpool"
is not available.
)
at /usr/src/lib/libc/stdlib/malloc.c:1355
#4 0x00000063de9b764a in ofree (argpool=0x7f7ffffe7700, p=0x633d4994d0,
clear=0, check=0, argsz=0) at /usr/src/lib/libc/stdlib/malloc.c:1369
#5 0x00000063de9b7580 in free (ptr=0x633d4994d0)
at /usr/src/lib/libc/stdlib/malloc.c:1488
#6 0x000000612343e1a6 in stdCB (widget=0x6400fdec00,
clientData=0x63d5804400 "\200\fK�c", callData=0x7f7ffffe7908 "\n")
at dtkcmds.c:3739
#7 0x00000063d4f2e085 in XtCallCallbackList ()
from /usr/X11R6/lib/libXt.so.11.0
#8 0x00000063c5239fff in ActivateCommon (wid=0x6400fdec00,
event=0x7f7ffffe7d60) at PushB.c:2229
#9 0x00000063d4f6dba2 in HandleActions () from /usr/X11R6/lib/libXt.so.11.0
#10 0x00000063d4f6b215 in _XtTranslateEvent ()
from /usr/X11R6/lib/libXt.so.11.0
#11 0x00000063d4f3eef9 in XtDispatchEventToWidget ()
from /usr/X11R6/lib/libXt.so.11.0
#12 0x00000063d4f3f85b in _XtDefaultDispatcher ()
---Type <return> to continue, or q <return> to quit---
from /usr/X11R6/lib/libXt.so.11.0
#13 0x00000063d4f3f34a in XtDispatchEvent () from /usr/X11R6/lib/libXt.so.11.0
#14 0x00000063d4f4c92e in XtAppProcessEvent ()
from /usr/X11R6/lib/libXt.so.11.0
#15 0x00000063d4f3fcd3 in XtMainLoop () from /usr/X11R6/lib/libXt.so.11.0
#16 0x000000612343cf00 in do_XtMainLoop (argc=1, argv=0x636dc3a340)
at dtkcmds.c:1111
#17 0x000000612340b97d in sh_exec (t=0x636dc3a2e0, flags=4)
at /home/cde/cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/xec.c:1333
#18 0x000000612338807c in exfile (shp=0x6123553270, iop=0x633d494ca0, fno=10)
at /home/cde/cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/main.c:580
#19 0x000000612338903c in sh_main (ac=2, av=0x7f7ffffe8d88, userinit=0)
at /home/cde/cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/main.c:350
#20 0x0000006123380379 in main (argc=2, argv=0x7f7ffffe8d88)
at /home/cde/cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/pmain.c:45
Current language: auto; currently asm
Thank you for your time,
-Chase
‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, January 17, 2021 2:48 PM, Marcin Cieslak <sa...@saper.info> wrote:
> On Sun, 17 Jan 2021, Chase via cdesktopenv-devel wrote:
>
> > Not Working:
> > OpenBSD 6.7, segfaults whenever free() is called, but this does work with
> > the old version, so it is a regression, but OpenBSD couldn't even boot when
> > I compiled normal master, it hung at dthello
>
> Is this free() used in ksh, or libc free()? ksh93 brings in a library called
> libast which includes its own malloc
> implementation. You might need to compile ksh93 and libast with debug symbols
> to see what's going on there.
>
> One problem with libast's own malloc is that it uses ancient UNIX system call
> sbrk(2) which
> is slowly phased out by FreeBSD - that's the reason why we can't have ksh93
> on the latest FreeBSD
> systems on aarch64 architecture - the system call is simply not there.
>
> Marcin
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