When compiling the following source:

class Test {

    Test(Integer x) {}

    void test() {
        new Test(""){};
    }
}

javac silently crashes. The crash is reproducible when the above program is compiled with the -XDdev hidden option - otherwise the only observable difference in javac's behavior is that any diagnostic following the one that is causing the crash will not be generated by javac.

Here's the javac output:

/usr/local/home/maurizio/Desktop/TestX.java:6: cannot find symbol
/usr/local/home/maurizio/Desktop/TestX.java:6: cannot find symbol
        new Test(""){};
        ^
  symbol: constructor Test(java.lang.String)
  location: class Test
/usr/local/home/maurizio/Desktop/TestX.java:6: cannot find symbol
/usr/local/home/maurizio/Desktop/TestX.java:6: cannot find symbol
        new Test(""){};
                    ^
  symbol: constructor Test()
  location: class Test
An exception has occurred in the compiler (1.7.0-ea). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1339)
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1322)
        at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:550)
        at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3346)
        at com.sun.tools.javac.code.Types.asSuper(Types.java:1319)
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1335)
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1322)
        at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:550)
        at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3346)
        at com.sun.tools.javac.code.Types.asSuper(Types.java:1319)
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1335)
        at com.sun.tools.javac.code.Types$14.visitClassType(Types.java:1322)
        at com.sun.tools.javac.code.Type$ClassType.accept(Type.java:550)
        at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:3346)
        at com.sun.tools.javac.code.Types.asSuper(Types.java:1319)
        at com.sun.tools.javac.code.Types.asOuterSuper(Types.java:1379)
        at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:2367)
        at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:1582)
        at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1344)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:394)
        at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:418)
        at com.sun.tools.javac.comp.Attr.visitExec(Attr.java:1102)
        at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1139)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:394)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:438)
        at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:454)
        at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:800)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:762)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:394)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:438)
        at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:720)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:650)
        at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:394)
        at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:438)
        at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2826)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2752)
        at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2688)
        at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1120)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:846)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:808)
        at com.sun.tools.javac.main.Main.compile(Main.java:400)
        at com.sun.tools.javac.main.Main.compile(Main.java:318)
        at com.sun.tools.javac.main.Main.compile(Main.java:309)
        at com.sun.tools.javac.Main.compile(Main.java:82)
        at com.sun.tools.javac.Main.main(Main.java:67)
Java Result: 4