[Vala] Getting the official module example to work on Windows

["Anatoli Steinmark" <derletztemohikaner gmx de>]

Hi,

I'm having trouble with the module example from http://live.gnome.org/Vala/TypeModules.
I'm using MinGW (GCC 4.4.0) on Windows (XP with SP3) with the recent (0.7.10) Vala compiler from 
http://code.google.com/p/valide/downloads/list.

Here's what I do:

/****************************************************/
C:\vtest>valac --pkg gmodule-2.0 main.vala plugin-interface.vala -o main

C:\vtest>valac -C plugin.vala plugin-interface.vala

C:\vtest>gcc -shared -fPIC -mms-bitfields -I/vala-0.7.10/include/glib-2.0 -I/val
a-0.7.10/lib/glib-2.0/include plugin.c plugin-interface.c -L/vala-0.7.10/lib -lg
object-2.0 -o libplugin.dll

C:\vtest>main
Loading plugin with path: 'libplugin.dll'
Loaded module: 'libplugin.dll'

(main.exe:3572): GLib-GObject-WARNING **: cannot register existing type `TestPlu
gin'

(main.exe:3572): GLib-GObject-CRITICAL **: g_type_interface_add_prerequisite: as
sertion `G_TYPE_IS_INTERFACE (interface_type)' failed

(main.exe:3572): GLib-GObject-CRITICAL **: g_type_add_interface_static: assertio
n `g_type_parent (interface_type) == G_TYPE_INTERFACE' failed
Plugin type: MyPlugin


C:\vtest>
/****************************************************/


If I compile with the "-g" flag I get the following from my JIT Debugger:


/****************************************************/
main.exe caused an Access Violation at location 00401cc0 in module main.exe Reading from location 00000008.

Registers:
eax=00000000 ebx=7ffd7000 ecx=003e7028 edx=00000000 esi=00000000 edi=00000010
eip=00401cc0 esp=0022ff00 ebp=0022ff18 iopl=0         nv up ei pl zr na po nc
cs=001b  ss=0023  ds=0023  es=0023  fs=003b  gs=0000             efl=00000246

Call stack:
00401CC0  main.exe:00401CC0  test_plugin_hello  plugin-interface.vala:2

        ...
        public interface TestPlugin : Object {
>           public abstract void hello ();
        }
        
        ...

00401C54  main.exe:00401C54  _main  main.vala.c:285

00401C9B  main.exe:00401C9B  main  main.vala:39

        ...
        }
        
>       void main () {
            var registrar = new PluginRegistrar<TestPlugin> ("plugin");
            registrar.load ();
        ...

004010B6  main.exe:004010B6
00401148  main.exe:00401148
7C817077  kernel32.dll:7C817077  RegisterWaitForInputIdle
/****************************************************/


I never used GLib or GObject before so I have no clues what the GLib warnings actually mean and what exactly 
is wrong.

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