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This bug was originally marked as duplicate of bug 174864, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans Platform Dev (Build 201102280001) VM: Java HotSpot(TM) 64-Bit Server VM, 17.1-b03-307, Java(TM) SE Runtime Environment, 1.6.0_22-b04-307-10M3261 OS: Mac OS X User Comments: dalcais10: happens randomly Stacktrace: java.lang.AssertionError at com.sun.tools.javac.jvm.Items$Item.load(Items.java:199) at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:243) at com.sun.tools.javac.jvm.Items$Item.coerce(Items.java:262) at com.sun.tools.javac.jvm.Gen.genExpr(Gen.java:842) at com.sun.tools.javac.jvm.Gen.visitTypeCast(Gen.java:2070) at com.sun.tools.javac.tree.JCTree$JCTypeCast.accept(JCTree.java:1599)
Created attachment 106887 [details] stacktrace
Hard to fix without a reproducible test case. Please reopen the issue if you are able to create a simple test case. Thanks.