Declare global in called table goes away following lookup?

[Fairlight]

With neither thought nor caution, Barry Wiseman blurted:
> Linux dclerk 5.0.14D4 (I know, I know)
>
> My variable is a declare global in the called table, a declare extern
> in the main table.  I am loading the variable in the main table, then
> doing the call.  All is well until the called code performs a lookup,
> following which the variable has become blank.  The following test code
> demonstrates the problem:

What happens if you reverse the global and extern, putting global in main
and extern in called?

mark->