diff -r 3a2f57a44b57 -r d6f09ae68eab langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/file/Locations.java
--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/file/Locations.java	Tue Nov 29 11:51:01 2016 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/file/Locations.java	Thu Dec 01 11:16:45 2016 +0000
@@ -1091,7 +1091,8 @@
                     }
 
                     // finally clean up the module name
-                    mn =  mn.replaceAll("[^A-Za-z0-9]", ".")  // replace non-alphanumeric
+                    mn =  mn.replaceAll("(\\.|\\d)*$", "")    // remove trailing version
+                            .replaceAll("[^A-Za-z0-9]", ".")  // replace non-alphanumeric
                             .replaceAll("(\\.)(\\1)+", ".")   // collapse repeating dots
                             .replaceAll("^\\.", "")           // drop leading dots
                             .replaceAll("\\.$", "");          // drop trailing dots