The following mini tests cause the Java compiler(JDK 7 b76) to throw AssertionError.
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class A1 {
    public void foo() {
        for (int #"super" = 0; #"super"<2; #"super"++) {
        }
    }
}
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class A2 {
    public void foo () {
        int #"super" = 5;

        switch (#"super") {
            case 5: #"super"++; break;
            default: break;
        }
    }
}
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The compiler throws the same error if change #"super" to #"this".

stack trace for A1:

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.AssertionError: store unsupported: stack(int)
        at com.sun.tools.javac.jvm.Items$Item.store(Items.java:212)
        at com.sun.tools.javac.jvm.Items$AssignItem.drop(Items.java:715)
        at com.sun.tools.javac.jvm.Gen.visitExec(Gen.java:1628)
        at com.sun.tools.javac.tree.JCTree$JCExpressionStatement.accept(JCTree.java:1145)
        at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
        at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:718)
        at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:704)
        at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:755)
        at com.sun.tools.javac.jvm.Gen.genLoop(Gen.java:1081)
        at com.sun.tools.javac.jvm.Gen.visitForLoop(Gen.java:1050)
        at com.sun.tools.javac.tree.JCTree$JCForLoop.accept(JCTree.java:859)
        at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
        at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:718)
        at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:704)
        at com.sun.tools.javac.jvm.Gen.genStats(Gen.java:755)
        at com.sun.tools.javac.jvm.Gen.visitBlock(Gen.java:1030)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:768)
        at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
        at com.sun.tools.javac.jvm.Gen.genStat(Gen.java:718)
        at com.sun.tools.javac.jvm.Gen.genMethod(Gen.java:911)
        at com.sun.tools.javac.jvm.Gen.visitMethodDef(Gen.java:884)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:655)
        at com.sun.tools.javac.jvm.Gen.genDef(Gen.java:683)
        at com.sun.tools.javac.jvm.Gen.genClass(Gen.java:2269)
        at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:695)
        at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1393)
        at com.sun.tools.javac.main.JavaCompiler.generate(JavaCompiler.java:1361)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:851)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:810)
        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)