Forum: Ruby-core [ruby-trunk - Bug #8000][Open] "require 'tk'" segfaults on 64-bit linux with Tk 8.6

Issue #8000 has been reported by edmccard (Ed McCardell).

----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by jonforums (Jon Forums).


Did you build tcltk, or install binaries via pacman? This seems wacky if 
you used pacman, but does `file` prove /usr/lib/libtcl8.6.so and 
/usr/lib/libtk8.6.so are 64bit?

Since it crashes so easily, fire up gdb via something like

  gdb --args ruby -e "require 'tk'"

run it, and attach the backtrace.

----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37281

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by ponimas (Alexander Ponimaskin).

File bt.txt added

=begin
All packages are installed via packman
/usr/lib/libtcl8.6.so: ELF 64-bit LSB shared object, x86-64, version 1 
(SYSV), dynamically linked, 
BuildID[sha1]=0x31a66c5d6eacb77f2a9a220bff2e78a88821167e, not stripped

/usr/lib/libtk8.6.so: ELF 64-bit LSB shared object, x86-64, version 1 
(SYSV), dynamically linked, 
BuildID[sha1]=0xdfa2df7ef1e30e3fbe510a294f8fe781415ee964, not stripped
=end

----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37315

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by jonforums (Jon Forums).


One of the committers please assign this to Hidetoshi NAGAI.

Too bad tcltklib.so is stripped and the bt is weak. I bet no one on 
ruby-core has an Arch x64 system to try to repro/debug the issue, so we 
need to get better debug info. (Or reproduce it on a Ubuntu x64 system)

Are you able to build ruby? If you did a pacman install of Arch's ruby 
1.9.3_p392 package, you should be able to build from source, and tweak 
`configure`'s `optflags` and `debugflags` to build tcltklib.so with 
debug info. The default install is to `/usr/local` so your Arch pkg 
won't get clobbered if you don't use `--prefix`.

My Arch x64 system is cmd line only. When I tried to cheat a repro/debug 
by installing tcl/tk add it's 15 friends, `ruby -e "require 'tk'"` 
rightfully failed due to no display. I don't know whether it failed 
before or after your segv. When I get time, I'll standup a new ArchBang 
install and try again. It looks as if tcltklib.so could be passing a bad 
value into the tcl library. Hard to tell from the bt.

Before you try building from source have you pinged the Arch Forum? I'd 
skimmed posts on Newbie Corner and Installation and didn't see mention 
of this issue. Have you contacted Arch's ruby packager (Thomas Dziedzic) 
to confirm whether he's seeing the issue? Given it fails so quickly, I 
was surprised not to find it in the forums.

Then again, Nagai-san may soon see this issue and swoop in with the 
solution ;)
----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37368

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by nagai (Hidetoshi Nagai).


First of all, current Ruby/Tk cannot support Tcl/Tk8.6. Please see 
[ruby-talk:395829].
But, I don't know whether this trouble belongs to the "tailcall" problem 
or not.
Does the same trouble occur with Tcl/Tk8.5 ? If so, tcltklib may not 
follow the changes on Ruby's core.

Of course, I must fix this bug and should support Tcl/Tk8.6.
However, I don't have enough time to work on it,
and unfortunately I have no idea to avoid the "tailcall" problem now.

----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37378

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by edmccard (Ed McCardell).


Jon: I've just posted to Newbie Corner on the Arch forums. The only 
other place on the internet that I've seen this is in the forums for the 
Coursera Programming languages class I'm taking, where several other 
users have reported it. I'll build ruby/tcl/tk from source tonight with 
debug info and get a better trace.

Nagai-san: Using the latest version of Arch linux ruby that was built 
against Tcl/Tk 8.5 works fine (that's ruby 1.9.3 p127). I don't know 
about the tailcall problem, but on 32-bit Arch linux with Tcl/Tk 8.6, 
the ruby/tk scripts I run are working without segfault.
----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37381

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by edmccard (Ed McCardell).

File bt-debug.txt added

Now that I've tried a few more ruby/tk scripts, I see that only a 
limited subset of tk works on 32-bit under Tk8.6. But in case it's still 
useful, I've attached a backtrace from gdb using 
ruby1.9.3p392/tcl8.6/tk8.6 with debug info on 64-bit.
----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37386

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by jonforums (Jon Forums).


> First of all, current Ruby/Tk cannot support Tcl/Tk8.6. Please see 
[ruby-talk:395829].
> But, I don't know whether this trouble belongs to the "tailcall" problem or not.

Nagai-san: thanks for the info. FYI, while it's not really relevant to 
Ed's Arch issue, I'm running Tcl/Tk8.6 on Win7 32bit on `ruby 1.9.3p393` 
and `ruby 2.0.0p19` built with mingw-w64 4.7.2 and I've not yet seen any 
problems with test scripts like http://pastie.org/6420781
----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37395

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Could you test the following script?
----------------------------------------------------------
module TkCore; RUN_EVENTLOOP_ON_MAIN_THREAD = true; end
require 'tk'
Tk.mainloop
----------------------------------------------------------
If it works, a bug may exist on handling a Thread.

From: "edmccard (Ed McCardell)" <edmccard@hotmail.com>
Subject: [ruby-core:53226] [ruby-trunk - Bug #8000] "require 'tk'" 
segfaults on 64-bit linux with Tk 8.6
Date: Fri, 8 Mar 2013 17:55:30 +0900
Message-ID: <redmine.journal-37386.20130308175529@ruby-lang.org>

Issue #8000 has been updated by edmccard (Ed McCardell).


That script,
----------------------------------------------------------
 module TkCore; RUN_EVENTLOOP_ON_MAIN_THREAD = true; end
 require 'tk'
 Tk.mainloop
 ----------------------------------------------------------
gives the result:

called Tcl_FindHashEntry on deleted table
Aborted (core dumped)


----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37711

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by hsbt (Hiroshi SHIBATA).

Assignee set to nagai (Hidetoshi Nagai)


----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37712

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee: nagai (Hidetoshi Nagai)
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.

Issue #8000 has been updated by edmccard (Ed McCardell).

File crash-2.txt added

Attached is the gdb backtrace from running nagai's test script.
----------------------------------------
Bug #8000: "require 'tk'" segfaults on 64-bit linux with Tk 8.6
https://bugs.ruby-lang.org/issues/8000#change-37720

Author: edmccard (Ed McCardell)
Status: Open
Priority: Normal
Assignee: nagai (Hidetoshi Nagai)
Category:
Target version:
ruby -v: ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]


Using ruby 1.9.3p392 and Tk 8.6.0 on 64-bit Arch Linux, attempting to 
"require 'tk'" causes a segfault.

To reproduce:
    ruby -e "require 'tk'"

The crash log is in the attached file.

Notes:
- I've heard from a Gentoo user who is having the same problem.
- On 32-bit Arch Linux, there is no problem.