bad behaviour operation and assignment multiple

[jespa007]

With this example,

class Number{
	constructor(_value){
		this.value=_value;
	}

	_andset(_value){
		return new Number(this.value&=_value)
	}
}

var a=new Number(0xff);
var b=1;
b=a&=0x0f
Console::outln("a:{0} b:{1}",a,b)

the output is the following,

a:{"value":15} b:15

b=a&=15 is performing a AND SET first and then assigns to b. 'b' should be also the object 'a'.

As a solution it should override the source of the "stackelement" slot with the latest stackelement written in the stack implemented in the virtual machine module store (i.e vm_store.cpp) .