random "Duplicate local variable _jspx_temp0" error under concurrent compilations

Duplicate local variable _jspx_temp0 . This error is sometimes reported when multiple threads compile JSP pages concurrently.

This seems to be a Jasper error already reported and fixed a long time ago in Tomcat: [https://issues.apache.org/bugzilla/show_bug.cgi?id=45691](https://issues.apache.org/bugzilla/show_bug.cgi?id=45691)

The above link also contains a full war to replicate, and the patch that was created to fix it.

Is Glassfish Jasper patched the same way as reported in the fix for Tomcat 6.0.19? It seems not...
#### Environment
Linux, Windows
#### Affected Versions
[current]