[Ada] Code clean ups and comments updates

2020-06-09  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

	* exp_ch3.adb, exp_ch4.adb, exp_ch6.adb, exp_ch9.adb,
	exp_disp.adb, exp_util.adb: Add comments related to errors that
	should be moved to semantic analysis. Also replace "?" with "??"
	in warning messages.

6 files changed, 17 insertions, 4 deletions

diff --git a/gcc/ada/exp_ch3.adb b/gcc/ada/exp_ch3.adb
index 6aaa475..381e4f1 100644
--- a/gcc/ada/exp_ch3.adb
+++ b/gcc/ada/exp_ch3.adb
@@ -4456,6 +4456,8 @@ package body Exp_Ch3 is
 
       procedure Check_Attr (Nam : Name_Id; TSS_Nam : TSS_Name_Type) is
       begin
+         --  Move this check to sem???
+
          if not Stream_Attribute_Available (Etype (Comp), TSS_Nam) then
             Error_Msg_Name_1 := Nam;
             Error_Msg_N
@@ -9039,6 +9041,8 @@ package body Exp_Ch3 is
                   end loop;
 
                   pragma Assert (Present (Comp));
+
+                  --  Move this check to sem???
                   Error_Msg_Node_2 := Comp;
                   Error_Msg_NE
                     ("parent type & with dynamic component & cannot be parent"
diff --git a/gcc/ada/exp_ch4.adb b/gcc/ada/exp_ch4.adb
index d9a96a5..bd8360f 100644
--- a/gcc/ada/exp_ch4.adb
+++ b/gcc/ada/exp_ch4.adb
@@ -4486,7 +4486,7 @@ package body Exp_Ch4 is
                        and then Nkind (Associated_Node_For_Itype (PtrT)) =
                                   N_Object_Declaration)
       then
-         Error_Msg_N ("?use of an anonymous access type allocator", N);
+         Error_Msg_N ("??use of an anonymous access type allocator", N);
       end if;
 
       --  RM E.2.2(17). We enforce that the expected type of an allocator
diff --git a/gcc/ada/exp_ch6.adb b/gcc/ada/exp_ch6.adb
index 4f8b4717..e948580 100644
--- a/gcc/ada/exp_ch6.adb
+++ b/gcc/ada/exp_ch6.adb
@@ -1960,7 +1960,7 @@ package body Exp_Ch6 is
          then
             if Comes_From_Source (N) then
                Error_Msg_N
-                 ("?atomic actual passed by copy (RM C.6(19))", Actual);
+                 ("??atomic actual passed by copy (RM C.6(19))", Actual);
             end if;
             return True;
          end if;
@@ -1971,7 +1971,7 @@ package body Exp_Ch6 is
          then
             if Comes_From_Source (N) then
                Error_Msg_N
-                 ("?volatile actual passed by copy (RM C.6(19))", Actual);
+                 ("??volatile actual passed by copy (RM C.6(19))", Actual);
             end if;
             return True;
          end if;
@@ -3921,6 +3921,8 @@ package body Exp_Ch6 is
             if Present (Ass)
               and then Is_Class_Wide_Type (Etype (Name (Ass)))
             then
+               --  Move the error messages below to sem???
+
                if Is_Access_Type (Etype (Call_Node)) then
                   if Designated_Type (Etype (Call_Node)) /=
                     Root_Type (Etype (Name (Ass)))
@@ -4115,6 +4117,8 @@ package body Exp_Ch6 is
 
          Set_Entity (Name (Call_Node), Parent_Subp);
 
+         --  Move this check to sem???
+
          if Is_Abstract_Subprogram (Parent_Subp)
            and then not In_Instance
          then
diff --git a/gcc/ada/exp_ch9.adb b/gcc/ada/exp_ch9.adb
index 2efa6d1..4c2af03 100644
--- a/gcc/ada/exp_ch9.adb
+++ b/gcc/ada/exp_ch9.adb
@@ -11168,6 +11168,7 @@ package body Exp_Ch9 is
                then
                   null;
                else
+                  --  Move this check to sem???
                   Error_Msg_NE (
                     "& is not a time type (RM 9.6(6))",
                        Expression (Delay_Statement (Alt)), Time_Type);
diff --git a/gcc/ada/exp_disp.adb b/gcc/ada/exp_disp.adb
index a812556..c897574 100644
--- a/gcc/ada/exp_disp.adb
+++ b/gcc/ada/exp_disp.adb
@@ -3836,6 +3836,7 @@ package body Exp_Disp is
       --  tagged type, when one of its primitive operations has a type in its
       --  profile whose full view has not been analyzed yet. More complex cases
       --  involve composite types that have one private unfrozen subcomponent.
+      --  Move this check to sem???
 
       procedure Export_DT (Typ : Entity_Id; DT : Entity_Id; Index : Nat := 0);
       --  Export the dispatch table DT of tagged type Typ. Required to generate
@@ -8150,6 +8151,7 @@ package body Exp_Disp is
             --  We exclude Input and Output stream operations because
             --  Limited_Controlled inherits useless Input and Output stream
             --  operations from Root_Controlled, which can never be overridden.
+            --  Move this check to sem???
 
             if not Is_TSS (Prim, TSS_Stream_Input)
                  and then
diff --git a/gcc/ada/exp_util.adb b/gcc/ada/exp_util.adb
index 91d5c81..7fce77a 100644
--- a/gcc/ada/exp_util.adb
+++ b/gcc/ada/exp_util.adb
@@ -1296,6 +1296,7 @@ package body Exp_Util is
                --  of the type. In the case of an inherited condition for an
                --  overriding operation, both the operation and the function
                --  are given by primitive wrappers.
+               --  Move this check to sem???
 
                if Ekind (New_E) = E_Function
                  and then Is_Primitive_Wrapper (New_E)
@@ -1326,6 +1327,7 @@ package body Exp_Util is
 
             --  Check that there are no calls left to abstract operations if
             --  the current subprogram is not abstract.
+            --  Move this check to sem???
 
             if Nkind (Parent (N)) = N_Function_Call
               and then N = Name (Parent (N))
@@ -3012,7 +3014,7 @@ package body Exp_Util is
             if Produced_Component_Check and then Has_Unchecked_Union (T) then
                Error_Msg_NE
                  ("invariants cannot be checked on components of "
-                  & "unchecked_union type &?", Comp_Id, T);
+                  & "unchecked_union type &??", Comp_Id, T);
             end if;
          end Process_Record_Component;