I have been looking into FLEX-35273 [1]. This is a compiler bug where it is possible to do things that don't make sense, like:
<js:initialView> <local:MyInitialView id="view1" /> <local:MyInitialView id="view2" /> </js:initialView> or even this : <js:initialView> <js:SimpleCSSValuesImpl /> </js:initialView> Neither of the above caused compile time errors. I have a fix for both the above scenarios. For the first one, I used MXMLDuplicateChildTagProblem which seems 'close enough' "Child tag '${childTag}' bound to namespace '${childNamespace}' is already specified for element '${element}'. It will be ignored."; This renders as : Child tag 'MyInitialView' bound to namespace '*' is already specified for element 'js:initialView'. It will be ignored. <local:MyInitialView id="view2" /> ^ in the first example above. The text does not feel entirely right, but seems close enough. "It will be ignored" sounds more like a warning (as opposed to an error/failure), which I think a) it should not be and b) it is not. For the second one, I could not find any relevant 'Problem' class (I may have missed one perhaps?) So I just made a new one. I don't really know what the rules are here. These Problems seem to include an error code so I am unclear what to do if I add a new one. i.e. it is not clear what new error code I should apply (or even if the error code is important for something). For now I just added an arbitrary errorCode = 1999 on MXMLBadChildTagPropertyAssignmentProblem. The new problem renders out to : In initializer for 'js:initialView', type org.apache.flex.core.SimpleCSSValuesImpl is not assignable to target type 'org.apache.flex.core.IApplicationView'. Alex, you may be able to advise here.... are there any rules I need to follow for the CompilerProblem classes (in particular, when adding a new class). Assuming all is well above, I will commit this fix tomorrow. I was also trying to see if I could figure out how to get checkintests running, but I so far I did not. However the regular build tests are all fine with the changes I made for this. 1. https://issues.apache.org/jira/browse/FLEX-35273