[multiple changes]

2010-10-21  Ed Schonberg  <schonberg@adacore.com>

	* sem_ch6.adb (Enter_Overloaded_Entity): Refine warning message about
	hiding, to remove noise warnings about hiding predefined operators.

2010-10-21  Emmanuel Briot  <briot@adacore.com>

	* g-comlin.adb (Add_Switch): Fix handling of switches with no separator
	when the parameter has length 1.

2010-10-21  Jose Ruiz  <ruiz@adacore.com>

	* sem_prag.adb (Set_Ravenscar_Profile): Enforce the restrictions of no
	dependence on Ada.Execution_Time.Timers,
	Ada.Execution_Time.Group_Budget, and
	System.Multiprocessors.Dispatching_Domains which are part of the
	Ravenscar Profile.
	* impunit.adb (Non_Imp_File_Names_05): Add the file "a-etgrbu" to the
	list of Ada 2005 files for package Ada.Execution_Time.Group_Budgets.
	(Non_Imp_File_Names_12): Add the file "s-mudido" to the list of Ada 2012
	files for package System.Mutiprocessors.Dispatching_Domains.

2010-10-21  Tristan Gingold  <gingold@adacore.com>

	* ug_words, vms_data.ads: Define the VMS qualifier for -gnateE.

2010-10-21  Thomas Quinot  <quinot@adacore.com>

	* sem_ch3.ads (Process_Discriminants): Clarify cases where this is
	called for a completion.

2010-10-21  Geert Bosch  <bosch@adacore.com>

	* uintp.ads: Expand image buffer to have enough room for 128-bit values
	* urealp.ads (UR_Write): Write constants in base 16 in hexadecimal
	notation; either as fixed point literal or in canonical radix 16
	floating point form.

From-SVN: r165761

gcc/ada/ChangeLog

+2010-10-21  Ed Schonberg  <schonberg@adacore.com>
+
+	* sem_ch6.adb (Enter_Overloaded_Entity): Refine warning message about
+	hiding, to remove noise warnings about hiding predefined operators.
+
+2010-10-21  Emmanuel Briot  <briot@adacore.com>
+
+	* g-comlin.adb (Add_Switch): Fix handling of switches with no separator
+	when the parameter has length 1.
+
+2010-10-21  Jose Ruiz  <ruiz@adacore.com>
+
+	* sem_prag.adb (Set_Ravenscar_Profile): Enforce the restrictions of no
+	dependence on Ada.Execution_Time.Timers,
+	Ada.Execution_Time.Group_Budget, and
+	System.Multiprocessors.Dispatching_Domains which are part of the
+	Ravenscar Profile.
+	* impunit.adb (Non_Imp_File_Names_05): Add the file "a-etgrbu" to the
+	list of Ada 2005 files for package Ada.Execution_Time.Group_Budgets.
+	(Non_Imp_File_Names_12): Add the file "s-mudido" to the list of Ada 2012
+	files for package System.Mutiprocessors.Dispatching_Domains.
+
+2010-10-21  Tristan Gingold  <gingold@adacore.com>
+
+	* ug_words, vms_data.ads: Define the VMS qualifier for -gnateE.
+
+2010-10-21  Thomas Quinot  <quinot@adacore.com>
+
+	* sem_ch3.ads (Process_Discriminants): Clarify cases where this is
+	called for a completion.
+
+2010-10-21  Geert Bosch  <bosch@adacore.com>
+
+	* uintp.ads: Expand image buffer to have enough room for 128-bit values
+	* urealp.ads (UR_Write): Write constants in base 16 in hexadecimal
+	notation; either as fixed point literal or in canonical radix 16
+	floating point form.
+
 2010-10-21  Robert Dewar  <dewar@adacore.com>
 
 	* a-cgaaso.ads, a-tags.ads, exp_ch3.adb, exp_attr.adb, exp_ch4.adb,

gcc/ada/g-comlin.adb

@@ -2109,14 +2109,21 @@ package body GNAT.Command_Line is
          Index     : Integer)
       is
          pragma Unreferenced (Index);
+         Sep : Character;
 
       begin
+         if Separator = "" then
+            Sep := ASCII.NUL;
+         else
+            Sep := Separator (Separator'First);
+         end if;
+
          if Cmd.Expanded = null then
             Cmd.Expanded := new Argument_List'(1 .. 1 => new String'(Simple));
 
             if Param /= "" then
                Cmd.Params :=
-                 new Argument_List'(1 .. 1 => new String'(Separator & Param));
+                 new Argument_List'(1 .. 1 => new String'(Sep & Param));
             else
                Cmd.Params := new Argument_List'(1 .. 1 => null);
             end if;
@@ -2137,7 +2144,7 @@ package body GNAT.Command_Line is
                    ((Cmd.Params (C) = null and then Param = "")
                      or else
                        (Cmd.Params (C) /= null
-                         and then Cmd.Params (C).all = Separator & Param))
+                         and then Cmd.Params (C).all = Sep & Param))
                  and then
                    ((Cmd.Sections (C) = null and then Section = "")
                      or else
@@ -2156,7 +2163,7 @@ package body GNAT.Command_Line is
             if Param /= "" then
                Add
                  (Cmd.Params,
-                  new String'(Separator & Param),
+                  new String'(Sep & Param),
                   Add_Before);
             else
                Add

gcc/ada/impunit.adb

@@ -394,6 +394,7 @@ package body Impunit is
      "a-disedf",    -- Ada.Dispatching.EDF
      "a-dispat",    -- Ada.Dispatching
      "a-envvar",    -- Ada.Environment_Variables
+     "a-etgrbu",    -- Ada.Execution_Time.Group_Budgets
      "a-exetim",    -- Ada.Execution_Time
      "a-extiti",    -- Ada.Execution_Time.Timers
      "a-izteio",    -- Ada.Integer_Wide_Wide_Text_IO
@@ -504,7 +505,8 @@ package body Impunit is
    --  The following units should be used only in Ada 2012 mode
 
    Non_Imp_File_Names_12 : constant File_List := (
-     0 => "s-multip");   -- System.Mutiprocessors
+     "s-multip",    -- System.Multiprocessors
+     "s-mudido");   -- System.Multiprocessors.Dispatching_Domains
 
    -----------------------
    -- Alternative Units --

gcc/ada/sem_ch3.ads

@@ -277,6 +277,10 @@ package Sem_Ch3 is
    --  Process the discriminants contained in an N_Full_Type_Declaration or
    --  N_Incomplete_Type_Decl node N. If the declaration is a completion,
    --  Prev is entity on the partial view, on which references are posted.
+   --  However, note that Process_Discriminants is called for a completion only
+   --  if partial view had no discriminants (else we just check conformance
+   --  between the two views and do not call Process_Discriminants again for
+   --  the completion).
 
    function Replace_Anonymous_Access_To_Protected_Subprogram
      (N : Node_Id) return Entity_Id;

gcc/ada/sem_ch6.adb

@@ -5914,15 +5914,30 @@ package body Sem_Ch6 is
             E := Homonym (E);
             exit when No (E);
 
-            --  Warn unless genuine overloading
+            --  Warn unless genuine overloading. Do not emit warning on
+            --  hiding predefined operators in Standard (these are either an
+            --  (artifact of our implicit declarations, or simple noise) but
+            --  keep warning on a operator defined on a local subtype, because
+            --  of the real danger that different operators may be applied in
+            --  various parts of the program.
 
             if (not Is_Overloadable (E) or else Subtype_Conformant (E, S))
                   and then (Is_Immediately_Visible (E)
                               or else
                             Is_Potentially_Use_Visible (S))
             then
-               Error_Msg_Sloc := Sloc (E);
-               Error_Msg_N ("declaration of & hides one#?", S);
+               if Scope (E) /= Standard_Standard then
+                  Error_Msg_Sloc := Sloc (E);
+                  Error_Msg_N ("declaration of & hides one#?", S);
+
+               elsif Nkind (S) = N_Defining_Operator_Symbol
+                 and then
+                   Scope (
+                     Base_Type (Etype (First_Formal (S)))) /= Scope (S)
+               then
+                  Error_Msg_N
+                    ("declaration of & hides predefined operator?", S);
+               end if;
             end if;
          end loop;
       end if;

gcc/ada/sem_prag.adb

@@ -5410,7 +5410,20 @@ package body Sem_Prag is
 
       --    Set required restrictions (see System.Rident for detailed list)
 
+      --    Set the No_Dependence rules
+      --      No_Dependence => Ada.Asynchronous_Task_Control
+      --      No_Dependence => Ada.Calendar
+      --      No_Dependence => Ada.Execution_Time.Group_Budget
+      --      No_Dependence => Ada.Execution_Time.Timers
+      --      No_Dependence => Ada.Task_Attributes
+      --      No_Dependence => System.Multiprocessors.Dispatching_Domains
+
       procedure Set_Ravenscar_Profile (N : Node_Id) is
+         Prefix_Entity   : Entity_Id;
+         Selector_Entity : Entity_Id;
+         Prefix_Node     : Node_Id;
+         Node            : Node_Id;
+
       begin
          --  pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
 
@@ -5459,6 +5472,106 @@ package body Sem_Prag is
 
          Set_Profile_Restrictions
            (Ravenscar, N, Warn => Treat_Restrictions_As_Warnings);
+
+         --  Set the No_Dependence restrictions
+
+         --  The following No_Dependence restrictions:
+         --    No_Dependence => Ada.Asynchronous_Task_Control
+         --    No_Dependence => Ada.Calendar
+         --    No_Dependence => Ada.Task_Attributes
+         --  are already set by previous call to Set_Profile_Restrictions.
+
+         --  Set the following restrictions which were added to Ada 2005:
+         --    No_Dependence => Ada.Execution_Time.Group_Budget
+         --    No_Dependence => Ada.Execution_Time.Timers
+
+         if Ada_Version >= Ada_2005 then
+            Name_Buffer (1 .. 3) := "ada";
+            Name_Len := 3;
+
+            Prefix_Entity := Make_Identifier (Loc, Name_Find);
+
+            Name_Buffer (1 .. 14) := "execution_time";
+            Name_Len := 14;
+
+            Selector_Entity := Make_Identifier (Loc, Name_Find);
+
+            Prefix_Node :=
+              Make_Selected_Component
+                (Sloc          => Loc,
+                 Prefix        => Prefix_Entity,
+                 Selector_Name => Selector_Entity);
+
+            Name_Buffer (1 .. 13) := "group_budgets";
+            Name_Len := 13;
+
+            Selector_Entity := Make_Identifier (Loc, Name_Find);
+
+            Node :=
+              Make_Selected_Component
+                (Sloc          => Loc,
+                 Prefix        => Prefix_Node,
+                 Selector_Name => Selector_Entity);
+
+            Set_Restriction_No_Dependence
+              (Unit    => Node,
+               Warn    => Treat_Restrictions_As_Warnings,
+               Profile => Ravenscar);
+
+            Name_Buffer (1 .. 6) := "timers";
+            Name_Len := 6;
+
+            Selector_Entity := Make_Identifier (Loc, Name_Find);
+
+            Node :=
+              Make_Selected_Component
+                (Sloc          => Loc,
+                 Prefix        => Prefix_Node,
+                 Selector_Name => Selector_Entity);
+
+            Set_Restriction_No_Dependence
+              (Unit    => Node,
+               Warn    => Treat_Restrictions_As_Warnings,
+               Profile => Ravenscar);
+         end if;
+
+         --  Set the following restrictions which was added to Ada 2012 (see
+         --  AI-0171):
+         --    No_Dependence => System.Multiprocessors.Dispatching_Domains
+
+         if Ada_Version >= Ada_2012 then
+            Name_Buffer (1 .. 6) := "system";
+            Name_Len := 6;
+
+            Prefix_Entity := Make_Identifier (Loc, Name_Find);
+
+            Name_Buffer (1 .. 15) := "multiprocessors";
+            Name_Len := 15;
+
+            Selector_Entity := Make_Identifier (Loc, Name_Find);
+
+            Prefix_Node :=
+              Make_Selected_Component
+                (Sloc          => Loc,
+                 Prefix        => Prefix_Entity,
+                 Selector_Name => Selector_Entity);
+
+            Name_Buffer (1 .. 19) := "dispatching_domains";
+            Name_Len := 19;
+
+            Selector_Entity := Make_Identifier (Loc, Name_Find);
+
+            Node :=
+              Make_Selected_Component
+                (Sloc          => Loc,
+                 Prefix        => Prefix_Node,
+                 Selector_Name => Selector_Entity);
+
+            Set_Restriction_No_Dependence
+              (Unit    => Node,
+               Warn    => Treat_Restrictions_As_Warnings,
+               Profile => Ravenscar);
+         end if;
       end Set_Ravenscar_Profile;
 
    --  Start of processing for Analyze_Pragma

gcc/ada/ug_words

@@ -59,6 +59,7 @@ gcc -c          ^ GNAT COMPILE
 -gnatDG         ^ /XDEBUG /EXPAND_SOURCEA
 -gnatD          ^ /XDEBUG
 -gnatec         ^ /CONFIGURATION_PRAGMAS_FILE
+-gnateE         ^ /EXTRA_EXCEPTION_INFORMATION
 -gnateD         ^ /SYMBOL_PREPROCESSING
 -gnatef         ^ /FULL_PATH_IN_BRIEF_MESSAGES
 -gnateG         ^ /GENERATE_PROCESSED_SOURCE

gcc/ada/uintp.ads

@@ -261,7 +261,7 @@ package Uintp is
    --  or decimal format. Auto, the default setting, lets the routine make
    --  a decision based on the value.
 
-   UI_Image_Max    : constant := 32;
+   UI_Image_Max    : constant := 48; -- Enough for a 128-bit number
    UI_Image_Buffer : String (1 .. UI_Image_Max);
    UI_Image_Length : Natural;
    --  Buffer used for UI_Image as described below

gcc/ada/urealp.adb

@@ -1323,48 +1323,8 @@ package body Urealp is
       if Val.Num = 0 then
          Write_Str ("0.0");
 
-      --  Constants in base 10 can be written in normal Ada literal style
-
-      elsif Val.Rbase = 10 then
-
-         --  Use fixed-point format for small scaling values
-
-         if Val.Den = 0 then
-            UI_Write (Val.Num, Decimal);
-            Write_Str (".0");
-
-         elsif Val.Den = 1 then
-            UI_Write (Val.Num / 10, Decimal);
-            Write_Char ('.');
-            UI_Write (Val.Num mod 10, Decimal);
-
-         elsif Val.Den = 2 then
-            UI_Write (Val.Num / 100, Decimal);
-            Write_Char ('.');
-            UI_Write (Val.Num mod 100 / 10, Decimal);
-            UI_Write (Val.Num mod 10, Decimal);
-
-         elsif Val.Den = -1 then
-            UI_Write (Val.Num, Decimal);
-            Write_Str ("0.0");
-
-         elsif Val.Den = -2 then
-            UI_Write (Val.Num, Decimal);
-            Write_Str ("00.0");
-
-         --  Else use exponential format
-
-         else
-            UI_Write (Val.Num / 10, Decimal);
-            Write_Char ('.');
-            UI_Write (Val.Num mod 10, Decimal);
-            Write_Char ('E');
-            UI_Write (1 - Val.Den, Decimal);
-         end if;
-
-      --  If we have a constant in a base other than 10, and the denominator
-      --  is zero, then the value is simply the numerator value, since we are
-      --  dividing by base**0, which is 1.
+      --  For constants with a denominator of zero, the value is simply the
+      --  numerator value, since we are dividing by base**0, which is 1.
 
       elsif Val.Den = 0 then
          UI_Write (Val.Num, Decimal);
@@ -1411,6 +1371,96 @@ package body Urealp is
             Write_Str (".0");
          end if;
 
+      --  Constants in base 2, 10 or 16 can be written in normal Ada literal
+      --  style, as long as they fit in the UI_Image_Buffer. Using hexadecimal
+      --  notation, 4 bytes are required for the 16# # part, and every fifth
+      --  character is an underscore. So, a buffer of size N has room for
+
+      --     ((N - 4) - (N - 4) / 5) * 4 bits
+
+      --   or at least
+
+      --     N * 16 / 5 - 12 bits
+
+      elsif (Val.Rbase = 10 or else Val.Rbase = 16)
+        and then Num_Bits (Val.Num) < UI_Image_Buffer'Length * 16 / 5 - 12
+      then
+         declare
+            Format : UI_Format := Decimal;
+            Scale  : Uint;
+
+         begin
+            if Val.Rbase = 16 then
+               Write_Str ("16#");
+               Format := Hex;
+            end if;
+
+            --  Use fixed-point format for small scaling values
+
+            if Val.Den = 1 then
+               UI_Write (Val.Num / Val.Rbase, Format);
+               Write_Char ('.');
+               UI_Write (Val.Num mod Val.Rbase, Format);
+
+            elsif Val.Den = 2 then
+               UI_Write (Val.Num / Val.Rbase**Uint_2, Format);
+               Write_Char ('.');
+               UI_Write (Val.Num mod Val.Rbase**Uint_2 / Val.Rbase, Format);
+               UI_Write (Val.Num mod Val.Rbase, Format);
+
+            elsif Val.Den = -1 then
+               UI_Write (Val.Num, Format);
+               Write_Str ("0.0");
+
+            elsif Val.Den = -2 then
+               UI_Write (Val.Num, Format);
+               Write_Str ("00.0");
+
+            --  Else use exponential format
+
+            else
+               UI_Image (Val.Num, Format);
+               Scale := UI_From_Int (Int (UI_Image_Length));
+
+               if Format = Decimal then
+
+                  --  Write decimal constants with a non-zero unit digit. This
+                  --  matches usual scientific notation.
+
+                  Write_Char (UI_Image_Buffer (1));
+                  Write_Char ('.');
+
+                  if UI_Image_Length = 1 then
+                     Write_Char ('0');
+                  else
+                     Write_Str (UI_Image_Buffer (2 .. UI_Image_Length));
+                  end if;
+
+                  Scale := Scale - 1; -- First digit is at unit position
+               else
+                  pragma Assert (Format = Hex);
+
+                  --  Write hexadecimal constants with a zero unit digit. This
+                  --  matches the Ada canonical form for binary floating point
+                  --  numbers, and also ensures that the underscores end up in
+                  --  the correct place.
+
+                  Write_Str ("0.");
+                  Write_Str (UI_Image_Buffer (4 .. UI_Image_Length));
+                  Scale := Scale - 4;         -- Subtract 16# #
+                  Scale := Scale - Scale / 5; -- Subtract underscores;
+               end if;
+
+               Write_Char ('E');
+               Format := Decimal;
+               UI_Write (Scale - Val.Den, Decimal);
+            end if;
+
+            if Format = Hex then
+               Write_Char ('#');
+            end if;
+         end;
+
       --  Constants in a base other than 10 can still be easily written
       --  in normal Ada literal style if the numerator is one.
 

gcc/ada/vms_data.ads

@@ -1543,6 +1543,15 @@ package VMS_Data is
                                             "-gnatm999999";
    --  NODOC (see /ERROR_LIMIT)
 
+   S_GCC_Except  : aliased constant S := "/EXTRA_EXCEPTION_INFORMATION "   &
+                                            "-gnateE";
+   --        /EXTRA_EXCEPTION_INFORMATION
+   --
+   --   Generate extra information in exception messages, in particular
+   --   display extra column information and the value and range associated
+   --   with index and range check failures, and extra column information for
+   --   access checks.
+
    S_GCC_Expand  : aliased constant S := "/EXPAND_SOURCE "                 &
                                             "-gnatG";
    --        /NOEXPAND_SOURCE (D)
@@ -3522,6 +3531,7 @@ package VMS_Data is
                      S_GCC_ErrorX  'Access,
                      S_GCC_Expand  'Access,
                      S_GCC_Lexpand 'Access,
+                     S_GCC_Except  'Access,
                      S_GCC_Extend  'Access,
                      S_GCC_Ext     'Access,
                      S_GCC_File    'Access,