Fatal mx2cc error, why?

[MikeHartParticipant]

What should this compiler error tell me?

Mx2cc version 1.1.01

***** Building app ‘C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.monkey2’ *****

Parsing…
Semanting…
Translating…
Compiling…
Build error: System command ‘g++ -I”C:/Monkey2/modules/” -I”C:/Monkey2/modules/monkey/native” -I”C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/” -std=c++11 -m32 -I”C:/Monkey2/modules/freetype/freetype-2.6.3/include/” -I”C:/Monkey2/modules/openal/openal-soft/include/” -I”C:/Monkey2/modules/gles20/angle/include/” -I”C:/Monkey2/modules/sdl2/SDL/include/” -c -o “C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/build/_1include_2_0r.cpp.o” “C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/include/_r.cpp”‘ failed.

g++ -I”C:/Monkey2/modules/” -I”C:/Monkey2/modules/monkey/native” -I”C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/” -std=c++11 -m32 -I”C:/Monkey2/modules/freetype/freetype-2.6.3/include/” -I”C:/Monkey2/modules/openal/openal-soft/include/” -I”C:/Monkey2/modules/gles20/angle/include/” -I”C:/Monkey2/modules/sdl2/SDL/include/” -c -o “C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/build/_1include_2_0r.cpp.o” “C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/include/_r.cpp”

In file included from C:/Monkey2/modules/monkey/native/bbmonkey.h:12:0,

from C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/include/_r.cpp:1:

C:/Monkey2/modules/monkey/native/bbgc.h: In instantiation of ‘void bbGCVar<T>::enqueue() [with T = t_fantomX2_cftObject_ftObject]’:

C:/Monkey2/modules/monkey/native/bbgc.h:229:10: required from ‘bbGCVar<T>::bbGCVar(T*) [with T = t_fantomX2_cftObject_ftObject]’

C:/Monkey2/modules/fantomX2/examples/Objects/Hierachy/ParentChild/ParentChild.buildv1.1.01/windows_debug/include/ParentChild_ParentChild.h:41:85: required from here

C:/Monkey2/modules/monkey/native/bbgc.h:221:18: error: cannot dynamic_cast ‘((bbGCVar<t_fantomX2_cftObject_ftObject>*)this)->bbGCVar<t_fantomX2_cftObject_ftObject>::_ptr’ (of type ‘struct t_fantomX2_cftObject_ftObject*’) to type ‘struct bbGCNode*’ (source is a pointer to incomplete type)

bbGC::enqueue( dynamic_cast<bbGCNode*>( _ptr ) );

^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

***** Fatal mx2cc error *****

Internal mx2cc build error

[MikeHartParticipant]

Ok, found it. This NULL assigment to an object declaration was causing it:

Monkey

Field parent:ftObject = Null

1	Field parent:ftObject = Null

Make it

Monkey

Field parent:ftObject

1	Field parent:ftObject

and it works.

[therevillsParticipant]

Looks like a bug to me. Could you post it on GitHub?

[MikeHartParticipant]

I am not sure. I think it is by design. For whatever odd reason it might be.

[JesseParticipant]

It’s a bug. Monkey2 should have caught it.

[MikeHartParticipant]

ok. No problem. I can work around it.

[therevillsParticipant]

Can you recreate it in a simple example?

This compile okay using v1.1.01:

Monkey

Namespace myapp #Import "<std>" Using std.. Class MyObject Field x:Int End Class MyTest Field test:MyObject = Null Method New() test = New MyObject test.x = 100 End End Function Main() Local t := New MyTest Print t.test.x End

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23

Namespace myapp   #Import "<std>"   Using std..   Class MyObject Field x:Int End   Class MyTest Field test:MyObject = Null Method New() test = New MyObject test.x  = 100 End End Function Main() Local t := New MyTest Print t.test.x End

[MikeHartParticipant]

I will see what I can do.

[MikeHartParticipant]

Here you go. Offending line is #15:

Monkey

Namespace bugtest #Import "<std>" #Import "<mojo>" Using std.. Using mojo.. ' The _g variable holds an instance to the cGame class Global _g:cGame Class myObject2 Field x:Float Field y:Float Field subObj2:List<myObject> = Null End Class myObject Field x:Float Field y:Float Field subObj:myObject2 = Null End '*************************************** ' The cGame class controls the app Class cGame Extends Window ' Create a field to store the instance of the cEngine class, which is an instance ' of the ftEngine class itself Field mo:myObject = Null '------------------------------------------ Method New() 'Super.New("fantomX2 Test",App.DesktopSize.X,App.DesktopSize.Y,Null) Super.New("Test",640,480,Null) ClearColor=New Color( 0,0,0 ) mo = New myObject End '------------------------------------------ Method OnRender:void(canvas:Canvas) Override App.RequestRender() canvas.DrawText("xxxx", 320,240) End End '*************************************** Function Main() New AppInstance _g = New cGame App.Run() End

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61

Namespace bugtest   #Import "<std>" #Import "<mojo>"   Using std.. Using mojo..   ' The _g variable holds an instance to the cGame class Global _g:cGame   Class myObject2 Field x:Float Field y:Float Field subObj2:List<myObject> = Null End   Class myObject Field x:Float Field y:Float Field subObj:myObject2 = Null End     '*************************************** ' The cGame class controls the app Class cGame Extends Window ' Create a field to store the instance of the cEngine class, which is an instance ' of the ftEngine class itself Field mo:myObject = Null   '------------------------------------------ Method New() 'Super.New("fantomX2 Test",App.DesktopSize.X,App.DesktopSize.Y,Null) Super.New("Test",640,480,Null) ClearColor=New Color( 0,0,0 ) mo = New myObject End   '------------------------------------------ Method OnRender:void(canvas:Canvas) Override App.RequestRender() canvas.DrawText("xxxx", 320,240) End   End     '*************************************** Function Main() New AppInstance _g = New cGame App.Run() End

[Mark SiblyKeymaster]

Thanks for posting sample code!

It appears to be fixed now (due to fixes to related stuff) although only in the develop branch which I wouldn’t recommended using just yet.

[MikeHartParticipant]

Thanks!

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