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Gtkmm-forge Digest, Vol 25, Issue 10

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Today's Topics:

   1. [Bug 512348] Glib::Thread::create() does not	appear to be
      thread safe (glibmm (bugzilla.gnome.org))
   2. [Bug 539063] GhostPad constructor is broken
      (gnomemm (bugzilla.gnome.org))
   3. [Bug 539186] New: destroy() deletes its	Glib::Source instance
      (glibmm (bugzilla.gnome.org))
   4. [Bug 539186] destroy() deletes its Glib::Source	instance
      (glibmm (bugzilla.gnome.org))
   5. [Bug 538882] Unable to compile gtkmm-2.8.12 on	Slackware 12.1
      (gtkmm (bugzilla.gnome.org))
   6. [Bug 538882] Unable to compile gtkmm-2.8.12 on	Slackware 12.1
      (gtkmm (bugzilla.gnome.org))
   7. [Bug 529533] Warning about wrapping unwrapped	implementation
      types (e.g. GHalMount) (glibmm (bugzilla.gnome.org))


----------------------------------------------------------------------

Message: 1
Date: Thu, 19 Jun 2008 10:17:10 +0000 (UTC)
From: "glibmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 512348] Glib::Thread::create() does not
	appear to be thread safe
To: gtkmm-forge lists sourceforge net
Message-ID: <20080619101710 3B98B23F519 label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=512348

  glibmm | threads | Ver: 2.14.x




------- Comment #14 from Chris Vine  2008-06-19 10:17 UTC -------
Even better, a third solution would be to be able to pass a custom container
object to the sigc::trackable constructor as a constructor argument, or to have
the container type as a template type (as with std::queue) - it would then be
possible to pass in a thread-safe container (I would choose std::set rather
than std::list anyway).

That would avoid any dependency issues.


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------------------------------

Message: 2
Date: Thu, 19 Jun 2008 10:49:31 +0000 (UTC)
From: "gnomemm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 539063] GhostPad constructor is broken
To: gtkmm-forge lists sourceforge net
Message-ID: <20080619104931 236DE23F519 label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
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  http://bugzilla.gnome.org/show_bug.cgi?id=539063

  gnomemm | gstreamermm | Ver: unspecified

Murray Cumming changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |murrayc murrayc com
  BugsThisDependsOn|                            |539108
            Summary|GhostPad wrapper lacking    |GhostPad constructor is
                   |something                   |broken




------- Comment #3 from Murray Cumming  2008-06-19 10:49 UTC -------
This is caused by gstreamer bug #539108.


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------------------------------

Message: 3
Date: Thu, 19 Jun 2008 21:03:58 +0000 (UTC)
From: "glibmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 539186] New: destroy() deletes its
	Glib::Source instance
To: gtkmm-forge lists sourceforge net
Message-ID: <bug-539186-5595 http bugzilla gnome org/>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
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  http://bugzilla.gnome.org/show_bug.cgi?id=539186

  glibmm | main loop | Ver: 2.16.x
           Summary: destroy() deletes its Glib::Source instance
           Product: glibmm
           Version: 2.16.x
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: main loop
        AssignedTo: gtkmm-forge lists sourceforge net
        ReportedBy: bcs26 cornell edu
         QAContact: gtkmm-forge lists sourceforge net
     GNOME version: 2.21/2.22
   GNOME milestone: Unspecified


In the glib C API, g_source_destroy() removes a source from its attached
context and marks it as destroyed; that's also the behavior documented for
Glib::Source::destroy(). The glibmm implementation, however, ends up deleting
the Glib::Source instance, not merely marking it as destroyed.

The same instance is later deleted again by its Glib::RefPtr, so calling
destroy() can easily and unavoidably cause heap corruption. This issue makes it
effectively impossible to safely detach a source from a context in glibmm.

I've attached a small example involving a derived source. The same issue is
also present for the standard event sources (Glib::TimeoutSource and friends).


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------------------------------

Message: 4
Date: Thu, 19 Jun 2008 21:06:24 +0000 (UTC)
From: "glibmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 539186] destroy() deletes its
	Glib::Source	instance
To: gtkmm-forge lists sourceforge net
Message-ID: <20080619210624 8C99923F5B7 label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=539186

  glibmm | main loop | Ver: 2.16.x




------- Comment #1 from Bryan Silverthorn  2008-06-19 21:06 UTC -------
Created an attachment (id=113073)
 --> (http://bugzilla.gnome.org/attachment.cgi?id=113073&action=view)
glibmm_source_destroy.cc

Test case.

Observed behavior:

"
$ ./glibmm_source_destroy 
> source->destroy()
~DerivedSource()
<
> source->destroy()

(process:19011): GLib-CRITICAL **: g_source_destroy: assertion `source != NULL'
failed
<
*** glibc detected *** ./glibmm_source_destroy: corrupted double-linked list:
0x08ffe4d0 ***
======= Backtrace: =========
/lib/libc.so.6[0xa867e4]
/lib/libc.so.6[0xa88613]
/lib/libc.so.6(cfree+0x96)[0xa88846]
/lib/libglib-2.0.so.0(g_free+0x36)[0xc44356]
/usr/lib/libglibmm-2.4.so.1(_ZNK4Glib11MainContext11unreferenceEv+0x1d)[0x729cccd]
./glibmm_source_destroy(_ZN4Glib6RefPtrINS_11MainContextEED1Ev+0x1c)[0x8048e3a]
./glibmm_source_destroy(__gxx_personality_v0+0x23c)[0x8048bb8]
/lib/libc.so.6(__libc_start_main+0xe6)[0xa2f5d6]
./glibmm_source_destroy(__gxx_personality_v0+0x55)[0x80489d1]
======= Memory map: ========
00110000-00111000 r-xp 00110000 00:00 0          [vdso]
0094c000-00959000 r-xp 00000000 fd:00 3999374   
/lib/libgcc_s-4.3.0-20080428.so.1
00959000-0095a000 rw-p 0000c000 fd:00 3999374   
/lib/libgcc_s-4.3.0-20080428.so.1
009f5000-00a11000 r-xp 00000000 fd:00 3997816    /lib/ld-2.8.so
00a11000-00a12000 r--p 0001c000 fd:00 3997816    /lib/ld-2.8.so
00a12000-00a13000 rw-p 0001d000 fd:00 3997816    /lib/ld-2.8.so
00a19000-00b7c000 r-xp 00000000 fd:00 3997867    /lib/libc-2.8.so
00b7c000-00b7e000 r--p 00163000 fd:00 3997867    /lib/libc-2.8.so
00b7e000-00b7f000 rw-p 00165000 fd:00 3997867    /lib/libc-2.8.so
00b7f000-00b82000 rw-p 00b7f000 00:00 0 
00b84000-00bab000 r-xp 00000000 fd:00 3999022    /lib/libm-2.8.so
00bab000-00bac000 r--p 00026000 fd:00 3999022    /lib/libm-2.8.so
00bac000-00bad000 rw-p 00027000 fd:00 3999022    /lib/libm-2.8.so
00baf000-00bb2000 r-xp 00000000 fd:00 3997898    /lib/libdl-2.8.so
00bb2000-00bb3000 r--p 00002000 fd:00 3997898    /lib/libdl-2.8.so
00bb3000-00bb4000 rw-p 00003000 fd:00 3997898    /lib/libdl-2.8.so
00bd1000-00beb000 r-xp 00000000 fd:00 3999377    /lib/libselinux.so.1
00beb000-00bec000 r--p 00019000 fd:00 3999377    /lib/libselinux.so.1
00bec000-00bed000 rw-p 0001a000 fd:00 3999377    /lib/libselinux.so.1
00c05000-00ce5000 r-xp 00000000 fd:00 3999384    /lib/libglib-2.0.so.0.1600.3
00ce5000-00ce6000 rw-p 000e0000 fd:00 3999384    /lib/libglib-2.0.so.0.1600.3
00cf4000-00d33000 r-xp 00000000 fd:00 3999388   
/lib/libgobject-2.0.so.0.1600.3
00d33000-00d34000 rw-p 0003f000 fd:00 3999388   
/lib/libgobject-2.0.so.0.1600.3
00d65000-00d68000 r-xp 00000000 fd:00 3999389   
/lib/libgmodule-2.0.so.0.1600.3
00d68000-00d69000 rw-p 00002000 fd:00 3999389   
/lib/libgmodule-2.0.so.0.1600.3
02031000-02036000 r-xp 00000000 fd:00 12044441   /usr/lib/libsigc-2.0.so.0.0.0
02036000-02037000 rw-p 00004000 fd:00 12044441   /usr/lib/libsigc-2.0.so.0.0.0
02ad9000-02bc0000 r-xp 00000000 fd:00 12032670   /usr/lib/libstdc++.so.6.0.10
02bc0000-02bc4000 r--p 000e6000 fd:00 12032670   /usr/lib/libstdc++.so.6.0.10
02bc4000-02bc6000 rw-p 000ea000 fd:00 12032670   /usr/lib/libstdc++.so.6.0.10
02bc6000-02bcb000 rw-p 02bc6000 00:00 0 
07269000-072bc000 r-xp 00000000 fd:00 12043870  
/usr/lib/libglibmm-2.4.so.1.0.24
072bc000-072be000 rw-p 00053000 fd:00 12043870  
/usr/lib/libglibmm-2.4.so.1.0.24
08048000-0804a000 r-xp 00000000 fd:00 17958628  
/home/bsilvert/arlut/home/bsilvert/toyprograms/glibmm_source_destroy/glibmm_source_destroy
0804a000-0804b000 rw-p 00001000 fd:00 17958628  
/home/bsilvert/arlut/home/bsilvert/toyprograms/glibmm_source_destroy/glibmm_source_destroy
08ffe000-0901f000 rw-p 08ffe000 00:00 0          [heap]
b7f00000-b7f21000 rw-p b7f00000 00:00 0 
b7f21000-b8000000 ---p b7f21000 00:00 0 
b8088000-b808b000 rw-p b8088000 00:00 0 
b8098000-b809f000 r--s 00000000 fd:00 12128132  
/usr/lib/gconv/gconv-modules.cache
b809f000-b80a1000 rw-p b809f000 00:00 0 
bfd8c000-bfda1000 rw-p bffeb000 00:00 0          [stack]
Aborted
"


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------------------------------

Message: 5
Date: Fri, 20 Jun 2008 02:47:18 +0000 (UTC)
From: "gtkmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 538882] Unable to compile gtkmm-2.8.12
	on	Slackware 12.1
To: gtkmm-forge lists sourceforge net
Message-ID: <20080620024718 592FB23F5AD label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=538882

  gtkmm | build | Ver: 2.8.x




------- Comment #2 from Eduardo Bacchi Kienetz  2008-06-20 02:47 UTC -------
(In reply to comment #1)
> What version of GTK+ are you using?

# ls /var/log/packages/gtk+*
# gtk+-1.2.10-i486-4   gtk+2-2.12.9-i486-1

These are the gtk+* I have installed (default from slackware), now, which one
gtkmm is getting to use I don't know. How could I find out?
Anyway... sorry, I didn't see there are newer versions. I'll try compiling
2.10.11 to check if the error persists and keep moving to newer ones if it
still happens.


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------------------------------

Message: 6
Date: Fri, 20 Jun 2008 05:59:26 +0000 (UTC)
From: "gtkmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 538882] Unable to compile gtkmm-2.8.12
	on	Slackware 12.1
To: gtkmm-forge lists sourceforge net
Message-ID: <20080620055926 4EA2B23F5AF label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=538882

  gtkmm | build | Ver: 2.8.x




------- Comment #3 from Murray Cumming  2008-06-20 05:59 UTC -------
You have GTK+ 2.12, so I suggest that you use gtkmm 2.12, not GTK+ 2.8. This
error is probably due to new deprecations in GTK+.


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------------------------------

Message: 7
Date: Sun, 22 Jun 2008 08:34:48 +0000 (UTC)
From: "glibmm (bugzilla.gnome.org)"
	<bugzilla-daemon bugzilla gnome org>
Subject: [gtkmm bugzilla] [Bug 529533] Warning about wrapping
	unwrapped	implementation types (e.g. GHalMount)
To: gtkmm-forge lists sourceforge net
Message-ID: <20080622083448 4A13723F518 label gnome org>
Content-Type: text/plain; charset=utf-8

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=529533

  glibmm | giomm | Ver: unspecified




------- Comment #10 from Beno?t Dejean  2008-06-22 08:34 UTC -------
*** Bug 539560 has been marked as a duplicate of this bug. ***


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