Re: [Ekiga-devel-list] ekiga on F-15

[Eugen Dedu <Eugen Dedu pu-pm univ-fcomte fr>]

On 04/05/11 09:36, Jacek Konieczny wrote:
> On Tue, May 03, 2011 at 11:32:17PM +0100, Peter Robinson wrote:
> > On Tue, May 3, 2011 at 10:18 PM, Eugen Dedu
> > <Eugen Dedu pu-pm univ-fcomte fr>  wrote:
> > > On 03/05/11 19:46, Peter Robinson wrote:
> > > > Hey All,
> > > >
> > > > We're nearing the release of Fedora 15 but we have an issue with ekiga
> > > > in that is crashes [1]. I've reported the bug to ptlib now here [2]
> > > > with a full backtrace but it segfaults before I get any output if run
> > > > as ekiga -d 4.
> > >
> > > This is the crash that both Julien and me have just discovered this evening!
> > >
> > > The bug was reported on 10 March.  The version as of 8 April worked on my
> > > machine.  The version as of today does not work on my machine.
> > >
> > > The conclusion is that the bug was triggered by another application.  Is
> > > your ekiga built with gcc 4.6?  Another potential application is libboost.
> >
> > Yes, gcc 4.6.0 and boost 1.46.0
>
> I think it is the GCC, or rather a PTLib abuse of GCC.
>
> I have fixed a similar crash (for ptlib 2.8, but not 2.10) with the
> following patch:
>
> --- ptlib-2.8.3/include/ptlib/object.h.orig     2010-12-20 23:39:10.000000000 +0100
> +++ ptlib-2.8.3/include/ptlib/object.h  2011-04-28 13:08:04.000000000 +0200
> @@ -947,7 +947,7 @@
>
>
>   // Memory pooling allocators
> -#if defined(__GNUC__)&&  __GNUC__>= 4&&  !defined(P_MINGW)
> +#if 0
>   #include<ext/bitmap_allocator.h>
>   template<class Type>  class PFixedPoolAllocator    : public __gnu_cxx::bitmap_allocator<Type>  { };
>   #include<ext/mt_allocator.h>
>
>
> For me it looks like PTLib tries to use some internal GCC API instead of
> standard std:allocaltor and it fails. I don't think using any internal
> APIs (and I consider anything which name starts with '__gnu_..' as
> such), even for great performance improvements, is a good idea.
>
> That patch fixes Ekiga-3.3.0 crash with ptlib 2.8, but the same Ekiga
> version seems to crash in a similar way when compiled with PTLib 2.10.
> In a similar way, but in a different place and the patch changes
> nothing.

Thank you very much.  This fixes the issue!  I think you have done 
something wrong when using ptlib 2.10, since ekiga 3.3.0 does not 
compile with it (as far as I remember).

It will be fixed upstream as soon as possible.

--
Eugen