“Random” (as in: I don’t know how to reproduce) NullPointerException when building a Spoofax project.

Might have to do with instances of Spoofax/316 occurring during reload, and causing e.g.

An internal error occurred during: "Report parse errors".

and

Exception in post-parse events

to appear in the error log, although those were for an editor for a different language.

Once it happened it seemed to repeat (one such error) every build of that project.

Could not update derived editor for L/…

java.lang.NullPointerException
at org.strategoxt.imp.runtime.services.StrategoBuilderListener.update(StrategoBuilderListener.java:136)
at org.strategoxt.imp.runtime.services.StrategoBuilderListener.update(StrategoBuilderListener.java:115)
at org.eclipse.imp.editor.ParserScheduler.notifyModelListeners(ParserScheduler.java:136)
at org.eclipse.imp.editor.ParserScheduler.run(ParserScheduler.java:88)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Submitted by Tobi Vollebregt on 10 December 2010 at 16:23

Missing null check. Fixed in r21493.