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Posted to dev@velocity.apache.org by "Sam Chang (JIRA)" <de...@velocity.apache.org> on 2007/02/07 00:24:05 UTC

[jira] Updated: (VELOCITY-514) Rendering a template with inline macro concurrently causes VM error : Null AST

     [ https://issues.apache.org/jira/browse/VELOCITY-514?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sam Chang updated VELOCITY-514:
-------------------------------

    Attachment: nullAST.log
                macroSlammer.jar

Attached macroSlammer.jar which reproduces the errors by queuing up multiple threads to render from a velocity template file.
Also attached nullAST.log with the errors

Requirements:
Java 1.5
Multiple CPU's

To run:
java -jar macroSlammer.jar

This will create velocity.log which contains the error. You may need to run it several times to reproduce.
(I found it to be reproduceable atleast 1 in 2 tries)


> Rendering a template with inline macro concurrently causes VM error : Null AST
> ------------------------------------------------------------------------------
>
>                 Key: VELOCITY-514
>                 URL: https://issues.apache.org/jira/browse/VELOCITY-514
>             Project: Velocity
>          Issue Type: Bug
>          Components: Engine
>    Affects Versions: 1.4
>            Reporter: Sam Chang
>         Attachments: macroSlammer.jar, nullAST.log
>
>
> If a template with inline macro is rendered concurrently it prints the following errors in the log:
> ERROR [velocity] VM #myInlineMacro: error : too few arguments to macro. Wanted 3 got 0
> ERROR [velocity] VM error : myInlineMacro. Null AST
> and where the expected output of the inline macro is, it has the string values of the arguments passed to the macro in brackets
> eg:  
> #myInlineMacro('Arg1' 'arg2' 'arg3')
> gives the following on above error
> (Arg1 arg2 arg3)

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