Re: AW: [gtkmm] Segfault when calling the MenuItem superconstructor.

[Murray Cumming <murrayc usa net>]

Yes, this is similar to the results already discovered, but you should
still add something to the bugzilla bug, along with details of your
system and compiler.

I'm sure we can get to the bottom of this eventually. It isn't the
highest priority for me personally because I don't think we need to
derive MenuItems very often. If you find the same problem with other
classes then I definitely want to know.

On Wed, 2002-08-28 at 14:50, Hopfes, Harald wrote:
> Hi!
> 
> I will run some tests, first I am doing it with MenuItem then with others.
> But for MenuItem I have some (maybe interesting) results:
> 
> I am using some shell-script to repeatingly compile a C++ File
> and afterwards starting the resulting executable.
> 
> The funny thing is that the SEGFAULT only occurs on certain sizes of the
> MenuItem-object.
> 
> Harald
> 
> ############################################################################
> #
> NR=0
> while true
> do
>     echo "Testing $NR"
>     sed -e"s/__VALUE__/${NR}/g" main.cpp > main3.cpp
>     nice -19 c++ -o main3 `pkg-config gtkmm-2.0 --cflags --libs` main3.cpp
>     ./main3
>     NR=$((NR+1))
> done
> ############################################################################
> #
> 
> 
> ############################################################################
> #
> #include <gtkmm.h>
> #include <iostream>
> 
> class NewNodeMenuItem : public Gtk::MenuItem {
> public:
> 
>   NewNodeMenuItem() : Gtk::MenuItem("Node") {}
>   Gtk::Window *my_window;
>   char buf[__VALUE__];
> };
> 
> int main(int argc, char *argv[]) {
> 
>   Gtk::Main main_instance (&argc, &argv);
>   cout << "Sizeof Object is : " << sizeof(NewNodeMenuItem) << endl;
>   new NewNodeMenuItem();
> 
>   return 0;
> 
> }
> 
> ############################################################################
> #
> 
> ############################################################################
> #
> 
> Testing 0
> Sizeof Object is : 56
> ./test_all.sh: line 9:  6671 Segmentation fault      (core dumped) ./main3
> Testing 1
> Sizeof Object is : 60
> Testing 2
> Sizeof Object is : 60
> Testing 3
> Sizeof Object is : 60
> Testing 4
> Sizeof Object is : 60
> Testing 5
> Sizeof Object is : 64
> ./test_all.sh: line 9:  6724 Segmentation fault      (core dumped) ./main3
> Testing 6
> Sizeof Object is : 64
> ./test_all.sh: line 9:  6736 Segmentation fault      (core dumped) ./main3
> Testing 7
> Sizeof Object is : 64
> ./test_all.sh: line 9:  6749 Segmentation fault      (core dumped) ./main3
> Testing 8
> Sizeof Object is : 64
> ./test_all.sh: line 9:  6760 Segmentation fault      (core dumped) ./main3
> Testing 9
> Sizeof Object is : 68
> Testing 10
> Sizeof Object is : 68
> Testing 11
> Sizeof Object is : 68
> Testing 12
> Sizeof Object is : 68
> Testing 13
> Sizeof Object is : 72
> Testing 14
> Sizeof Object is : 72
> Testing 15
> Sizeof Object is : 72
> Testing 16
> Sizeof Object is : 72
> Testing 17
> Sizeof Object is : 76
> Testing 18
> Sizeof Object is : 76
> Testing 19
> Sizeof Object is : 76
> Testing 20
> Sizeof Object is : 76
> Testing 21
> Sizeof Object is : 80
> Testing 22
> Sizeof Object is : 80
> Testing 23
> Sizeof Object is : 80
> Testing 24
> Sizeof Object is : 80
> Testing 25
> Sizeof Object is : 84
> Testing 26
> Sizeof Object is : 84
> Testing 27
> Sizeof Object is : 84
> Testing 28
> Sizeof Object is : 84
> Testing 29
> Sizeof Object is : 88
> Testing 30
> Sizeof Object is : 88
> Testing 31
> Sizeof Object is : 88
> Testing 32
> Sizeof Object is : 88
> Testing 33
> Sizeof Object is : 92
> Testing 34
> Sizeof Object is : 92
> Testing 35
> Sizeof Object is : 92
> Testing 36
> Sizeof Object is : 92
> Testing 37
> Sizeof Object is : 96
> Testing 38
> Sizeof Object is : 96
> Testing 39
> Sizeof Object is : 96
> Testing 40
> Sizeof Object is : 96
> Testing 41
> Sizeof Object is : 100
> Testing 42
> Sizeof Object is : 100
> Testing 43
> Sizeof Object is : 100
> Testing 44
> Sizeof Object is : 100
> Testing 45
> Sizeof Object is : 104
> Testing 46
> Sizeof Object is : 104
> Testing 47
> Sizeof Object is : 104
> Testing 48
> Sizeof Object is : 104
> Testing 49
> Sizeof Object is : 108
> Testing 50
> Sizeof Object is : 108
> Testing 51
> Sizeof Object is : 108
> Testing 52
> Sizeof Object is : 108
> Testing 53
> Sizeof Object is : 112
> Testing 54
> Sizeof Object is : 112
> Testing 55
> Sizeof Object is : 112
> Testing 56
> Sizeof Object is : 112
> Testing 57
> Sizeof Object is : 116
> Testing 58
> Sizeof Object is : 116
> Testing 59
> Sizeof Object is : 116
> Testing 60
> Sizeof Object is : 116
> Testing 61
> Sizeof Object is : 120
> Testing 62
> Sizeof Object is : 120
> Testing 63
> Sizeof Object is : 120
> Testing 64
> Sizeof Object is : 120
> Testing 65
> Sizeof Object is : 124
> Testing 66
> Sizeof Object is : 124
> Testing 67
> Sizeof Object is : 124
> Testing 68
> Sizeof Object is : 124
> Testing 69
> Sizeof Object is : 128
> Testing 70
> Sizeof Object is : 128
> Testing 71
> Sizeof Object is : 128
> Testing 72
> Sizeof Object is : 128
> Testing 73
> Sizeof Object is : 132
> Testing 74
> Sizeof Object is : 132
> Testing 75
> Sizeof Object is : 132
> Testing 76
> Sizeof Object is : 132
> Testing 77
> Sizeof Object is : 136
> Testing 78
> Sizeof Object is : 136
> Testing 79
> Sizeof Object is : 136
> Testing 80
> Sizeof Object is : 136
> Testing 81
> Sizeof Object is : 140
> Testing 82
> Sizeof Object is : 140
> Testing 83
> Sizeof Object is : 140
> Testing 84
> Sizeof Object is : 140
> Testing 85
> Sizeof Object is : 144
> Testing 86
> Sizeof Object is : 144
> Testing 87
> Sizeof Object is : 144
> Testing 88
> Sizeof Object is : 144
> Testing 89
> Sizeof Object is : 148
> Testing 90
> Sizeof Object is : 148
> Testing 91
> Sizeof Object is : 148
> Testing 92
> Sizeof Object is : 148
> Testing 93
> Sizeof Object is : 152
> Testing 94
> Sizeof Object is : 152
> Testing 95
> Sizeof Object is : 152
> Testing 96
> Sizeof Object is : 152
> Testing 97
> Sizeof Object is : 156
> Testing 98
> Sizeof Object is : 156
> Testing 99
> Sizeof Object is : 156
> Testing 100
> Sizeof Object is : 156
> ############################################################################
> #
> 
> > -----Ursprüngliche Nachricht-----
> > Von: Murray Cumming [mailto:murrayc usa net]
> > Gesendet: Mittwoch, 28. August 2002 14:45
> > An: Hopfes, Harald
> > Cc: 'gtkmm-list gnome org'; Kuth, Joachim Dr.; Schwan, 
> > Reinhard; Meier,
> > Elke
> > Betreff: Re: [gtkmm] Segfault when calling the MenuItem
> > superconstructor.
> > 
> > 
> > On Wed, 2002-08-28 at 12:33, Hopfes, Harald wrote:
> > > Hello!
> > > 
> > > We use gtkmm in our industrial project and the bug
> > > http://bugzilla.gnome.org/show_bug.cgi?id=78578 occurs many times 
> > > , we might be urged to migrate back to an older version of gtkmm.
> > > 
> > > This would cause __very much__ work for us.
> > > Is anybody working on this bug?
> > 
> > Do you experience this only with Gtk::Menu, or with other classes too?
> > Have you discovered anything that might help us?
> > 
> > -- 
> > Murray Cumming
> > murrayc usa net
> > www.murrayc.com
> > 
-- 
Murray Cumming
murrayc usa net
www.murrayc.com