tracker issue : CF-3218452

Problem Description:

When a cfthread tag is used inside a custom tag, if the thread is not joined back to the calling custom tag, then the thread does not property execute.

Steps to Reproduce:

Create the following three files, all in the same directory.

Application.cfc:

component
{
    this.name = "CFThreadCustomTagTest";
}

ThePage.cfm:

<cfthread action="run" name="ThreadTestInPage">
    <cflog log="Application" text="The thread in the page successfully ran" type="information" />
</cfthread>
<cf_ThreadTag />

ThreadTag.cfm:

<cfif thisTag.ExecutionMode EQ "start">
    <cfthread action="run" name="ThreadTest">
        <cflog log="Application" text="The thread within the tag successfully ran" type="information" />
    </cfthread>
</cfif>

Actual Result:

When viewing the logs, I see the following entries:

"Severity","ThreadID","Date","Time","Application","Message"
"Information","ajp-bio-8012-exec-1","06/19/12","07:18:11",,"C:\ColdFusion10\cfusion\logs\application.log initialized"
"Information","cfthread-11","06/19/12","07:18:15","CFTHREADCUSTOMTAGTEST","The thread in the page successfully ran"
"Error","cfthread-9","06/19/12","07:18:15",,"THREADTEST: Variable _cffunccfthread_cfThreadTag2ecfm16902001291 is undefined. "

Expected Result:

I expect to see two log entries, one for the thread processing in the page, and one for the thread processing in the tag. 

Any Workarounds:

If I change ThreadTag.cfm to the following code:

<cfif thisTag.ExecutionMode EQ "start">
    <cfthread action="run" name="ThreadTest">
        <cflog log="Application" text="The thread within the tag successfully ran" type="information" />
    </cfthread>
    <cfthread action="join" name="ThreadTest" timeout="10" />
    <cfdump var="#cfthread#">

</cfif>

Then I get the two log entries that I expect. However, I need to be able to run a thread without waiting for it to finish.

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3218452

Keywords:
FixTested


External Customer Info:
External Company:  
External Customer Name: webshorts
External Customer Email:  
External Test Config: My Hardware and Environment details:



Windows Server 2008, IIS 7 using the default ColdFusion 10 install. I have updated the JVM to u32 in order to be compatible with Microsoft's JDBC SQL Server driver. You can see my development server settings here:



https://dl.dropbox.com/u/2586403/serversettings.pdf



I see this on three separate ColdFusion 10 installations, and can reproduce the problem every single time.

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