The compiler as of JDK 7 b32 failed with the output below.
All goes fine with b31, it's a regression.

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.StringIndexOutOfBoundsException: String index out of range: 71
	at java.lang.String.charAt(String.java:694)
	at com.sun.tools.javac.util.Log.printErrLine(Log.java:251)
	at com.sun.tools.javac.util.Log.writeDiagnostic(Log.java:343)
	at com.sun.tools.javac.util.Log.report(Log.java:306)
	at com.sun.tools.javac.util.AbstractLog.warning(AbstractLog.java:116)
	at com.sun.tools.javac.util.MandatoryWarningHandler.logMandatoryWarning(MandatoryWarningHandler.java:246)
	at com.sun.tools.javac.util.MandatoryWarningHandler.report(MandatoryWarningHandler.java:129)
	at com.sun.tools.javac.comp.Check.warnDeprecated(Check.java:153)
	at com.sun.tools.javac.comp.Attr.checkId(Attr.java:2167)
	at com.sun.tools.javac.comp.Attr.visitIdent(Attr.java:1823)
	at com.sun.tools.javac.tree.JCTree$JCIdent.accept(JCTree.java:1679)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribType(Attr.java:402)
	at com.sun.tools.javac.comp.Attr.visitNewClass(Attr.java:1397)
	at com.sun.tools.javac.tree.JCTree$JCNewClass.accept(JCTree.java:1346)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:389)
	at com.sun.tools.javac.comp.Attr.visitVarDef(Attr.java:732)
	at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:709)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:425)
	at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:764)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:765)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.visitIf(Attr.java:1058)
	at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1115)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.visitIf(Attr.java:1060)
	at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1115)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:425)
	at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:764)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:765)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.visitTry(Attr.java:930)
	at com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1023)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:425)
	at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:764)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:765)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:683)
	at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:653)
	at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:372)
	at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:409)
	at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:2745)
	at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2671)
	at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:2607)
	at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1057)
	at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:786)
	at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:751)
	at com.sun.tools.javac.main.Main.compile(Main.java:386)
	at com.sun.tools.javac.main.Main.compile(Main.java:312)
	at com.sun.tools.javac.main.Main.compile(Main.java:303)
	at com.sun.tools.javac.Main.compile(Main.java:82)
	at com.sun.tools.javac.Main.main(Main.java:67)