[xmlvm-users] Try catch crashes

[Markus H. <ma...@ti...>]

Hi,

I have the following java code:

        if(args==null){
                   System.out.println(1);
        }else{
            try{
                System.out.println(2);

            }   catch(Exception e){
                System.out.println(3);

            }
        }

It gets converted to the following ObjectiveC code (only relevant part here)

    if (_op1.o != [NSNull null]) goto label0;
    _op1.o = [java_lang_System _GET_out];
    _stack[_sp++].o = _op1.o;
    _stack[_sp++].i = 1;
    _sp -= 2;
    [((java_io_PrintStream*) _stack[_sp].o) println___int:_stack[_sp + 1].i];
    goto label1;
    @try {
    label0:;
    _op1.o = [java_lang_System _GET_out];
    _stack[_sp++].o = _op1.o;
    _stack[_sp++].i = 2;
    _sp -= 2;
    [((java_io_PrintStream*) _stack[_sp].o) println___int:_stack[_sp + 1].i];
    } @catch (java_lang_Exception* _ex) {
        _stack[_sp++].o = _ex;
        goto label7;
    }

This code crashes. The label0 is inside the try and the code jumps into it from the outside. This seems not to be allowed in ObjectiveC. if I move the label0:; before the try manually, it works. The xsl would need to be changed, so that if there is a jvm:label directly after a jvm:catch, they have to be swapped. I tried but wasn't able to do this myself. Don't know if it has any side effects, too :/

Markus