FULL PRODUCT VERSION :
javac 1.7.0_21

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
The compiler throws a NullPointerException during code generation.

This seems to happen when there is a try(){} statement nested in a foreach-loop without using braces.

The work-around is using braces.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
javac Bug.java  # Bug.java is included in this report


ERROR MESSAGES/STACK TRACES THAT OCCUR :
An exception has occurred in the compiler (1.7.0_21). 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.tree.TreeInfo.endPos(TreeInfo.java:248)
        at com.sun.tools.javac.comp.Lower.visitIterableForeachLoop(Lower.java:3285)
        at com.sun.tools.javac.comp.Lower.visitForeachLoop(Lower.java:3141)
        at com.sun.tools.javac.tree.JCTree$JCEnhancedForLoop.accept(JCTree.java:907)
        at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
        at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
        at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:70)
        at com.sun.tools.javac.tree.TreeTranslator.visitBlock(TreeTranslator.java:160)
        at com.sun.tools.javac.comp.Lower.visitBlock(Lower.java:3319)
        at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:781)
        at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
        at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
        at com.sun.tools.javac.tree.TreeTranslator.visitMethodDef(TreeTranslator.java:144)
        at com.sun.tools.javac.comp.Lower.visitMethodDefInternal(Lower.java:2627)
        at com.sun.tools.javac.comp.Lower.visitMethodDef(Lower.java:2546)
        at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:669)
        at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
        at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
        at com.sun.tools.javac.comp.Lower.visitClassDef(Lower.java:2291)
        at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:591)
        at com.sun.tools.javac.tree.TreeTranslator.translate(TreeTranslator.java:58)
        at com.sun.tools.javac.comp.Lower.translate(Lower.java:2160)
        at com.sun.tools.javac.comp.Lower.translate(Lower.java:2180)
        at com.sun.tools.javac.comp.Lower.translateTopLevelClass(Lower.java:3659)
        at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1395)
        at com.sun.tools.javac.main.JavaCompiler.desugar(JavaCompiler.java:1273)
        at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:870)
        at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:829)
        at com.sun.tools.javac.main.Main.compile(Main.java:439)
        at com.sun.tools.javac.main.Main.compile(Main.java:353)
        at com.sun.tools.javac.main.Main.compile(Main.java:342)
        at com.sun.tools.javac.main.Main.compile(Main.java:333)
        at com.sun.tools.javac.Main.compile(Main.java:76)
        at com.sun.tools.javac.Main.main(Main.java:61)

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class Bug {
public void f () throws Exception {
for (Object inputFile: (Iterable<?>) null)
try (AutoCloseable ac = (AutoCloseable) null) {
}
}
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
public class Bug {
public void f () throws Exception {
for (Object inputFile: (Iterable<?>) null) {
try (AutoCloseable ac = (AutoCloseable) null) {
}

}
}