The following stacktrace shows that Symbol.outmostClass is being called on a PackageSymbol.

The NPE is a result of an edit in outermostClass that checks the kind of the result.

If outermostClass is supposed to be valid on a PackageSymbol, and return null, it should be documented as such.

    [javac] java.lang.NullPointerException
    [javac] at com.sun.tools.javac.code.Symbol.outermostClass(Symbol.java:305)
    [javac] at com.sun.tools.javac.comp.Check.checkDeprecated(Check.java:2503)
    [javac] at com.sun.tools.javac.comp.Attr.checkId(Attr.java:2617)
    [javac] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:2383)
    [javac] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1809)
    [javac] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:445)
    [javac] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:432)
    [javac] at com.sun.tools.javac.comp.Attr.attribType(Attr.java:487)
    [javac] at com.sun.tools.javac.comp.Attr.attribType(Attr.java:480)
    [javac] at com.sun.tools.javac.comp.MemberEnter.attribImportType(MemberEnter.java:732)
    [javac] at com.sun.tools.javac.comp.MemberEnter.visitImport(MemberEnter.java:573)