===================================================================
@@ -1011,6 +1011,17 @@ package body Sem_Res is
It : Interp;
begin
+ -- if the context is an attribute reference that can apply to
+ -- functions, this is never a parameterless call. (RM 4.1.4 (6))
+
+ if Nkind (Parent (N)) = N_Attribute_Reference
+ and then (Attribute_Name (Parent (N)) = Name_Address
+ or else Attribute_Name (Parent (N)) = Name_Code_Address
+ or else Attribute_Name (Parent (N)) = Name_Access)
+ then
+ return False;
+ end if;
+
if not Is_Overloaded (N) then
return
Ekind (Etype (N)) = E_Subprogram_Type
@@ -1070,7 +1081,7 @@ package body Sem_Res is
-- If the entity is the name of an operator, it cannot be a call because
-- operators cannot have default parameters. In this case, this must be
-- a string whose contents coincide with an operator name. Set the kind
- -- of the node appropriately and reanalyze.
+ -- of the node appropriately.
if (Is_Entity_Name (N)
and then Nkind (N) /= N_Operator_Symbol
The prefix of certain attributes references suvh as 'Address and 'Access is never interpreted as a function call. This rule was not properly enforced when the prefix was an explicit dereference of an access_to_function value. The following must compile and execute quietly: with System; use System; with yyy; use yyy; procedure Addr is begin if Func'Address /= Func_Addr then raise Program_Error; end if; if Proc'Address /= Proc_Addr then raise Program_Error; end if; end; --- with System; use System; package Yyy is procedure Proc (Param : in Integer); function Func (Param : in Integer) return Integer; type Proc_Ptr_T is access procedure (Param : in Integer); type Func_Ptr_T is access function (Param : in Integer) return Integer; Proc_Ptr : Proc_Ptr_T := Proc'Access; Func_Ptr : Func_Ptr_T := Func'Access; Proc_Addr : System.Address := Proc_Ptr.all'Address; Func_Addr : System.Address := Func_Ptr.all'Address; end; --- package body Yyy is procedure Proc (Param : in Integer) is begin null; end; function Func (Param : in Integer) return Integer is begin return 1; end; end; Tested on x86_64-pc-linux-gnu, committed on trunk 2010-10-05 Ed Schonberg <schonberg@adacore.com> * sem_res.adb (Check_Parameterless_Call): If the prefix of 'Address is an explicit dereference of an access to function, the prefix is not interpreted as a parameterless call.