error creating GroovyPagesException if nested exception has no stack trace

[kgeis]

GroovyPageView#createGroovyPageException(..) expects the exception that it is building around to have a stack trace. It is possible for an exception not to have a stack trace. This causes a problem in the following code:

        StackTraceElement[] stackTrace = exception.getStackTrace();
        String className = stackTrace[0].getClassName();

Stack trace:

java.lang.ArrayIndexOutOfBoundsException: 0
        at org.grails.web.servlet.view.GroovyPageView.createGroovyPageException(GroovyPageView.java:118)
        at org.grails.web.servlet.view.GroovyPageView.handleException(GroovyPageView.java:112)
        at org.grails.web.servlet.view.GroovyPageView.renderTemplate(GroovyPageView.java:80)
        at org.grails.web.servlet.view.AbstractGrailsView.renderWithinGrailsWebRequest(AbstractGrailsView.java:71)
        at org.grails.web.servlet.view.AbstractGrailsView.renderMergedOutputModel(AbstractGrailsView.java:55)
        at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
        at org.grails.web.sitemesh.GrailsLayoutView.renderInnerView(GrailsLayoutView.java:150)
        at org.grails.web.sitemesh.GrailsLayoutView.obtainContent(GrailsLayoutView.java:128)
        at org.grails.web.sitemesh.GrailsLayoutView.renderTemplate(GrailsLayoutView.java:63)
        at org.grails.web.servlet.view.AbstractGrailsView.renderWithinGrailsWebRequest(AbstractGrailsView.java:71)
        at org.grails.web.servlet.view.AbstractGrailsView.renderMergedOutputModel(AbstractGrailsView.java:55)
        at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
        at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1286)
        at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1041)
        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:984)
        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
...

Steps to Reproduce

This is not an easily reproducible bug.

Expected Behaviour

I expect to see the original error in my log files or on an error page.

Actual Behaviour

The log files contain a stack trace from the process of creating a nesting exception, losing the context of the underlying problem.

Environment Information

• Operating System: Centos 6.9
• Grails Version: 3.2.1
• JDK Version: Oracle 1.8.0_171
• Container Version (If Applicable): n/a