-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2011, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2012, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
with Sinfo; use Sinfo;
with Snames; use Snames;
with Tbuild; use Tbuild;
+with Uintp; use Uintp;
package body Sem_Ch4 is
end if;
end Analyze_Membership_Op;
+ -----------------
+ -- Analyze_Mod --
+ -----------------
+
+ procedure Analyze_Mod (N : Node_Id) is
+ begin
+ -- A special warning check, if we have an expression of the form:
+ -- expr mod 2 * literal
+ -- where literal is 64 or less, then probably what was meant was
+ -- expr mod 2 ** literal
+ -- so issue an appropriate warning.
+
+ if Warn_On_Suspicious_Modulus_Value
+ and then Nkind (Right_Opnd (N)) = N_Integer_Literal
+ and then Intval (Right_Opnd (N)) = Uint_2
+ and then Nkind (Parent (N)) = N_Op_Multiply
+ and then Nkind (Right_Opnd (Parent (N))) = N_Integer_Literal
+ and then Intval (Right_Opnd (Parent (N))) <= Uint_64
+ then
+ Error_Msg_N
+ ("suspicious MOD value, was '*'* intended'??", Parent (N));
+ end if;
+
+ -- Remaining processing is same as for other arithmetic operators
+
+ Analyze_Arithmetic_Op (N);
+ end Analyze_Mod;
+
----------------------
-- Analyze_Negation --
----------------------
elsif Is_Record_Type (Prefix_Type) then
-- Find component with given name
+ -- In an instance, if the node is known as a prefixed call, do
+ -- not examine components whose visibility may be accidental.
- while Present (Comp) loop
+ while Present (Comp) and then not Is_Prefixed_Call (N) loop
if Chars (Comp) = Chars (Sel)
and then Is_Visible_Component (Comp)
then
return;
end if;
- -- If we have infix notation, the operator must be usable.
- -- Within an instance, if the type is already established we
- -- know it is correct.
+ -- If we have infix notation, the operator must be usable. Within
+ -- an instance, if the type is already established we know it is
+ -- correct. If an operand is universal it is compatible with any
+ -- numeric type.
+
-- In Ada 2005, the equality on anonymous access types is declared
-- in Standard, and is always visible.
elsif In_Open_Scopes (Scope (Bas))
or else Is_Potentially_Use_Visible (Bas)
or else In_Use (Bas)
- or else (In_Use (Scope (Bas))
- and then not Is_Hidden (Bas))
+ or else (In_Use (Scope (Bas)) and then not Is_Hidden (Bas))
or else (In_Instance
- and then First_Subtype (T1) = First_Subtype (Etype (R)))
+ and then
+ (First_Subtype (T1) = First_Subtype (Etype (R))
+ or else
+ (Is_Numeric_Type (T1)
+ and then Is_Universal_Numeric_Type (Etype (R)))))
or else Ekind (T1) = E_Anonymous_Access_Type
then
null;
and then Base_Type (Etype (R)) /= Universal_Integer
then
if Ada_Version >= Ada_2012
- and then Is_Dimensioned_Type (Etype (L))
+ and then Has_Dimension_System (Etype (L))
then
Error_Msg_NE
("exponent for dimensioned type must be a rational" &
Rewrite (N, Indexing);
Analyze (N);
- -- The return type of the indexing function is a reference type, so
- -- add the dereference as a possible interpretation.
+ -- If the return type of the indexing function is a reference type,
+ -- add the dereference as a possible interpretation. Note that the
+ -- indexing aspect may be a function that returns the element type
+ -- with no intervening implicit dereference.
- Disc := First_Discriminant (Etype (Func));
- while Present (Disc) loop
- if Has_Implicit_Dereference (Disc) then
- Add_One_Interp (N, Disc, Designated_Type (Etype (Disc)));
- exit;
- end if;
+ if Has_Discriminants (Etype (Func)) then
+ Disc := First_Discriminant (Etype (Func));
+ while Present (Disc) loop
+ if Has_Implicit_Dereference (Disc) then
+ Add_One_Interp (N, Disc, Designated_Type (Etype (Disc)));
+ exit;
+ end if;
- Next_Discriminant (Disc);
- end loop;
+ Next_Discriminant (Disc);
+ end loop;
+ end if;
else
Indexing := Make_Function_Call (Loc,
-- Add implicit dereference interpretation
- Disc := First_Discriminant (Etype (It.Nam));
- while Present (Disc) loop
- if Has_Implicit_Dereference (Disc) then
- Add_One_Interp
- (N, Disc, Designated_Type (Etype (Disc)));
- exit;
- end if;
+ if Has_Discriminants (Etype (It.Nam)) then
+ Disc := First_Discriminant (Etype (It.Nam));
+ while Present (Disc) loop
+ if Has_Implicit_Dereference (Disc) then
+ Add_One_Interp
+ (N, Disc, Designated_Type (Etype (Disc)));
+ exit;
+ end if;
- Next_Discriminant (Disc);
- end loop;
+ Next_Discriminant (Disc);
+ end loop;
+ end if;
exit;
end if;
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