[Bug 907515] New: ghc 7.4.1 and 7.4.2 compile a correct gtk2hs program such that it crashes with a segmentation fault

[Red Hat Bugzilla]

Product: Fedora
https://bugzilla.redhat.com/show_bug.cgi?id=907515

Bug ID: 907515
           Summary: ghc 7.4.1 and 7.4.2 compile a correct gtk2hs program
                    such that it crashes with a segmentation fault
           Product: Fedora
           Version: 18
         Component: ghc
          Severity: unspecified
          Priority: unspecified
          Reporter: [e-mail]

Description of problem:

I wrote a Haskell program using gtk2hs.  It works fine on Fedora 17 under ghc
7.0.4.  However it crashes with a segmentation fault when compiled on Fedora 18
or rawhide(19).  The crash occurs the first time an action added to the gtk
loop with timeoutAddFull runs.

I wrote a minimal test case that triggers the problem and posted it here:

http://hackage.haskell.org/trac/ghc/ticket/7629

It seems to be a compiler or run-time-system bug in ghc 7.4.1 and 7.4.2 or
possibly gtk2hs, because the binary built on F18 or rawhide crashes when run on
F17, and the binary built on F17 runs without a problem on F18.

Furthermore, if I disable selinux on the kernel command line at boot time, the
crash vanishes in F18 and rawhide.  I don't know why-- the crash doesn't
trigger any selinux error messages, just a segmentation fault.

Jens Petersen reported to me that the crash does not occur on 64 bit test
machines on Fedora 18, but he confirmed that it does occur on 32 bit test
machines.

I've run into pointer alignment problems with ghc before, where alignment
pragmas in C modules are somehow broken when the C module is linked with a ghc
program, so that may be the case here?

Version-Release number of selected component (if applicable): ghc 7.4.1 and
7.4.2.

How reproducible:

Every time

Steps to Reproduce:

Compile and run the test program posted in the haskell.org trac bug report

http://hackage.haskell.org/trac/ghc/ticket/7629

I'm also posting the bug here in case someone else runs into it.

[Bug 907515] gtk2hs timer program segfaults when compiled with ghc 7.4 on i686

[Red Hat Bugzilla]

Product: Fedora
https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ghc 7.4.1 and 7.4.2 compile |gtk2hs timer program
                   |a correct gtk2hs program    |segfaults when compiled
                   |such that it crashes with a |with ghc 7.4 on i686
                   |segmentation fault          |

[Bug 907515] gtk2hs timer program segfaults when compiled with ghc 7.4 on i686

[Red Hat Bugzilla]

Product: Fedora
https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #1 from Jens Petersen  ---
I simplified the test-case further in the ticket just to use glib, but same
story.

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

Product: Fedora
https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|gtk2hs timer program        |gtk2hs timer program
                   |segfaults when compiled     |compiled with ghc 7.4
                   |with ghc 7.4 on i686        |segfaults on i686

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #2 from Jens Petersen  ---
It would be good to retest with ghc-7.6.3 in F20.

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #3 from Fedora End Of Life  ---
This message is a reminder that Fedora 18 is nearing its end of life.
Approximately 4 (four) weeks from now Fedora will stop maintaining
and issuing updates for Fedora 18. It is Fedora's policy to close all
bug reports from releases that are no longer maintained. At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '18'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 18's end of life.

Thank you for reporting this issue and we are sorry that we may not be 
able to fix it before Fedora 18 is end of life. If you would still like 
to see this bug fixed and are able to reproduce it against a later version 
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version prior to Fedora 18's end of life.

Although we aim to fix as many bugs as possible during every release's 
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[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|18                          |19

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #4 from Jens Petersen  ---
I believe this should be fixed in ghc-7.6.3.

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #5 from Jens Petersen  ---
(In reply to Jens Petersen from comment #4)
> I believe this should be fixed in ghc-7.6.3.

It is not, but will be in the coming 7.8.

I will backport Garret's patch committed upstream:
http://hackage.haskell.org/trac/ghc/ticket/7629

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |MODIFIED

--- Comment #6 from Jens Petersen  ---
I can confirm that the patch fixes the issue in ghc-7.6.3-18.3.fc20.i686.

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Jens Petersen  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |ASSIGNED

--- Comment #7 from Jens Petersen  ---
(still assigned for now since fix not built yet for f19)

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |MODIFIED

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #8 from Fedora Update System  ---
ghc-7.4.2-11.2.fc19 has been submitted as an update for Fedora 19.
https://admin.fedoraproject.org/updates/ghc-7.4.2-11.2.fc19

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

--- Comment #9 from Fedora Update System  ---
ghc-7.6.3-18.3.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/ghc-7.6.3-18.3.fc20

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|MODIFIED                    |ON_QA

--- Comment #10 from Fedora Update System  ---
Package ghc-7.6.3-18.3.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing ghc-7.6.3-18.3.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-1787/ghc-7.6.3-18.3.fc20
then log in and leave karma (feedback).

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ON_QA                       |CLOSED
   Fixed In Version|                            |ghc-7.6.3-18.3.fc20
         Resolution|---                         |ERRATA
        Last Closed|                            |2014-02-17 16:08:48

--- Comment #11 from Fedora Update System  ---
ghc-7.6.3-18.3.fc20 has been pushed to the Fedora 20 stable repository.  If
problems still persist, please make note of it in this bug report.

[Bug 907515] gtk2hs timer program compiled with ghc 7.4 segfaults on i686

[Red Hat Bugzilla]

https://bugzilla.redhat.com/show_bug.cgi?id=907515

Fedora Update System  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
   Fixed In Version|ghc-7.6.3-18.3.fc20         |ghc-7.4.2-11.2.fc19

--- Comment #12 from Fedora Update System  ---
ghc-7.4.2-11.2.fc19 has been pushed to the Fedora 19 stable repository.  If
problems still persist, please make note of it in this bug report.