****** Warning: Actually, `Void' has no accurate type. Keep in
mind that `Void' is just a way to denote the default value for
a type or to denote the lack of an object. One can use `Void'
as the right-hand-side of an assignment or to replace some actual
argument. (See "http://wiki.liberty-eiffel.org/index.php/Void"
for details.) At time being, the type ANY will be used for this
occurrence `Void'. Please update your code with a more accurate
expression, may be by adding an extra non-initialized local variable.

Line 12 column 32 in BAD_AGENT24 (/home/et/Liberty/test/language/error_warning_msg/bad_agent24.e):
         (agent proc(?)).call([Void])
                               ^     
------
****** Warning: Using `Void' as an item of a manifest TUPLE is
not good practice because `Void' has no accurate type. You can
work around by using an extra non-initialized local variable of
some accurate type. Another work around is to use an explicit
creation of the TUPLE. As an example `create {TUPLE[STRING,ANY]}.make_2(Void,Void)'
can be used to create a TUPLE[STRING,ANY] with default values.

Line 12 column 32 in BAD_AGENT24 (/home/et/Liberty/test/language/error_warning_msg/bad_agent24.e):
         (agent proc(?)).call([Void])
                               ^     
------
****** Fatal Error: Cannot pass `[Void]' which is of type TUPLE[ANY]
into formal type TUPLE[CHARACTER].

The source lines relevant to this message are the following:

Line 12 column 31 in BAD_AGENT24 (/home/et/Liberty/test/language/error_warning_msg/bad_agent24.e):
         (agent proc(?)).call([Void])
                              ^      
Line 13 column 24 in PROCEDURE (/home/et/Liberty/src/lib/kernel/procedure.e):
   call alias "()" (o: O_)
                       ^  
------