tracker issue | What iT iS dESign studios

Title:

[regression] "Variable ___IMPLICITARRYSTRUCTVAR2 is undefined."

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Status/Resolution/Reason: Closed/Fixed/Fixed

Reporter/Name(from Bugbase): / ext-user (Anit Kumar Panda)

Created: 08/29/2016

Components: Language

Versions: 2016

Failure Type: Non Functioning

Found In Build/Fixed In Build: 299076 / 303894

Priority/Frequency: Major / Few users will encounter

Locale/System: English / Linux All,Mac 10 All,Solaris All,Win XP All

Vote Count: 5

Problem: "Variable ___IMPLICITARRYSTRUCTVAR2 is undefined."

Method: Try the below code:-

<cfscript>
writeOutput("#server.coldfusion.productVersion#<br>");

st = {};
k = "key";
try {
	st[k] = st[k] ?: {};
} catch (any e){
	writeOutput("#e.message#<br>");
} finally {
	writeDump(st);
}

try {
	st[k] = st.keyExists(k) ? st[k] : {};
} catch (any e){
	writeOutput("#e.message#<br>");
} finally {
	writeDump(st);
}
</cfscript>

Result: "Variable ___IMPLICITARRYSTRUCTVAR2 is undefined."

Expected: It should work.

Workaround: It creates an array in 2016,0,01,298513, not a struct.

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

Watson Bug ID:	4184965

External Customer Info:
External Company:  
External Customer Name:  
External Customer Email:

Attachments:

Comments:

no, it doesn't *work* in  2016,0,01,298513. In that version it creates an array, not a struct.

Comment by External U.

1929 | August 29, 2016 09:18:52 AM GMT

I have made the corrections. Thanks Adam.

Comment by Anit K.

1930 | August 29, 2016 09:29:49 AM GMT

A more concise repro case is:

foo={}; 
foo.bar = foo.bar ?: {};

This is a pretty nasty bug.  Is there an ETA on when it will be fixed?

Comment by External U.

1931 | October 01, 2016 09:34:02 PM GMT

Ran Elvis Regression , breaks following cases:
<cf_qatest id="t5">
<cftry>
<cfscript>
function myfunc2(myinput)
{
	//writedump(myinput);
	//writeOutput("calling func2");
	return myinput;
}
function myfunct1(id)
{ 
           //writeOutput("calling func1");
	        return javacast("null","");
}
function getById(id){
	 
	 return myfunct1(id) ?: myfunc2({name="suchi",id="1234"});
	
}
</cfscript>
<cfset myobj=getById("suchi")>
<cfoutput>#myobj.name#</cfoutput>

<cfcatch>
<cfdump var="#cfcatch#">
</cfcatch>
</cftry>
<cf_expectedresults>
suchi
</cf_expectedresults>
</cf_qatest>
<hr>
<h3>Bug CF-3951221 :Elvis operator issue when the third operand is a function or variable</h3>
<cf_qatest id="t6">
<cftry>
<cfscript>

function myfunc(myinput)
{
if (myinput=="suchi")
return javacast("null","") ;
else
return myinput;
}

function getById1( id ){
	 y = 10;
	 //writeOutput(id);
         return myfunc(id) ?: y?:myfunc(90990);
         }
</cfscript>
<cfset myobj=getById1("suchi")>
<!---<cfdump var="#myobj#">--->
<cfoutput>#myobj#</cfoutput>
<cfcatch>
<cfdump var=#cfcatch#>
<cfoutput>#cfcatch.message#</cfoutput>
</cfcatch>
</cftry>
<cf_expectedresults>
10
</cf_expectedresults>
</cf_qatest>
<hr>

Comment by Suchika S.

1932 | October 03, 2016 07:22:45 AM GMT

An additional case of the same error is as follows, either of those lines break

<cfscript>
variables.metaextends = mystructdoesnotexist ?: {};
variables.myarray = myarraydoesnotexist ?: [];
</cfscript>

<cfdump var="#variables#">

Comment by External U.

1933 | October 24, 2016 03:21:17 PM GMT

It makes elivis operator unusable but also [] is busted too see my comment not just {}

Vote by External U.

1935 | October 25, 2016 03:21:51 PM GMT

Any news on this or any kind of indicative ETA ?

We rely on fixes from the latest Updater 3 but then this one being a regression means we would need to rewrite big swathes of code to deal with this issue

Comment by External U.

1934 | November 14, 2016 11:36:50 AM GMT

tracker issue : CF-4184965

[regression] "Variable ___IMPLICITARRYSTRUCTVAR2 is undefined."