Issue: cannot assign null to variables in some scopes from CFC
Steps to Reproduce:
1) Enable NULL support
2) Create Application.cfc having:
component {
THIS.name = "MyApp"
THIS.applicationTimeout = createTimeSpan(0,0,0,10)
THIS.sessionManagement = true
THIS.sessionTimeout = createTimeSpan(0,0,0,10)
THIS.enableNULLSupport=true
}
3) Create MyCFC.cfc having:
component {function f() {FORM.foo = null}}
4) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(FORM.foo))
</cfscript>
Actual and Expected Result: YES
5) In MyCFC.cfc, change FORM.foo to URL.foo
6) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(URL.foo))
</cfscript>
Actual and Expected Result: YES
7) In MyCFC.cfc, change URL.foo to SERVER.foo
8) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(SERVER.foo))
</cfscript>
Actual and Expected Result: YES
9) In MyCFC.cfc, change SERVER.foo to REQUEST.foo
10) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(REQUEST.foo))
</cfscript>
Actual Result: coldfusion.runtime.UndefinedElementException: Element FOO is undefined in a Java object of type class coldfusion.runtime.RequestScope.
Expected Result: YES
11) In MyCFC.cfc, change REQUEST.foo to SESSION.foo
12) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(SESSION.foo))
</cfscript>
Actual Result: coldfusion.runtime.UndefinedElementException: Element FOO is undefined in a Java object of type class coldfusion.runtime.MemorySessionScope.
Expected Result: YES
13) In MyCFC.cfc, change SESSION.foo to APPLICATION.foo
14) Run index.cfm containing:
<cfscript>
invoke("MyCFC", "f")
writeDump(isNULL(APPLICATION.foo))
</cfscript>
Actual Result: coldfusion.runtime.UndefinedElementException: Element FOO is undefined in a Java object of type class coldfusion.runtime.ApplicationScope.
Expected Result: YES
Verified in build 2018.0.01.308605 (PreRelease).
Filed as CF-4202539.
