[multiple changes]

2011-08-31  Robert Dewar  <dewar@adacore.com>

	* sem_ch4.adb: Minor reformatting.
	* sem_ch6.adb: Minor code reorganization (use Ekind_In).

2011-08-31  Thomas Quinot  <quinot@adacore.com>

	* scos.ads: Minor documentation clarification.
	* put_scos.adb: Do not generate SCO unit header line for a unit that
	has no SCO lines.

From-SVN: r178367

gcc/ada/ChangeLog

 2011-08-31  Robert Dewar  <dewar@adacore.com>
 
+	* sem_ch4.adb: Minor reformatting.
+	* sem_ch6.adb: Minor code reorganization (use Ekind_In).
+
+2011-08-31  Thomas Quinot  <quinot@adacore.com>
+
+	* scos.ads: Minor documentation clarification.
+	* put_scos.adb: Do not generate SCO unit header line for a unit that
+	has no SCO lines.
+
+2011-08-31  Robert Dewar  <dewar@adacore.com>
+
 	* a-rbtgbo.adb, alfa_test.adb: Minor reformatting.
 
 2011-08-31  Tristan Gingold  <gingold@adacore.com>

gcc/ada/put_scos.adb

@@ -28,7 +28,11 @@ with SCOs;    use SCOs;
 with Snames;  use Snames;
 
 procedure Put_SCOs is
-   Ctr : Nat;
+   Current_SCO_Unit : SCO_Unit_Index := 0;
+   --  Initial value must not be a valid unit index
+
+   procedure Write_SCO_Initiate (SU : SCO_Unit_Index);
+   --  Start SCO line for unit SU, also emitting SCO unit header if necessary
 
    procedure Output_Range (T : SCO_Table_Entry);
    --  Outputs T.From and T.To in line:col-line:col format
@@ -72,10 +76,34 @@ procedure Put_SCOs is
       end loop;
    end Output_String;
 
+   ------------------------
+   -- Write_SCO_Initiate --
+   ------------------------
+
+   procedure Write_SCO_Initiate (SU : SCO_Unit_Index) is
+      SUT : SCO_Unit_Table_Entry renames SCO_Unit_Table.Table (SU);
+   begin
+      if Current_SCO_Unit /= SU then
+         Write_Info_Initiate ('C');
+         Write_Info_Char (' ');
+         Write_Info_Nat (SUT.Dep_Num);
+         Write_Info_Char (' ');
+
+         Output_String (SUT.File_Name.all);
+
+         Write_Info_Terminate;
+
+         Current_SCO_Unit := SU;
+      end if;
+
+      Write_Info_Initiate ('C');
+   end Write_SCO_Initiate;
+
 --  Start of processing for Put_SCOs
 
 begin
-   --  Loop through entries in SCO_Unit_Table
+   --  Loop through entries in SCO_Unit_Table. Note that entry 0 is by
+   --  convention present but unused.
 
    for U in 1 .. SCO_Unit_Table.Last loop
       declare
@@ -88,19 +116,6 @@ begin
          Start := SUT.From;
          Stop  := SUT.To;
 
-         --  Write unit header (omitted if no SCOs are generated for this unit)
-
-         if Start <= Stop then
-            Write_Info_Initiate ('C');
-            Write_Info_Char (' ');
-            Write_Info_Nat (SUT.Dep_Num);
-            Write_Info_Char (' ');
-
-            Output_String (SUT.File_Name.all);
-
-            Write_Info_Terminate;
-         end if;
-
          --  Loop through SCO entries for this unit
 
          loop
@@ -111,6 +126,9 @@ begin
                T            : SCO_Table_Entry renames SCO_Table.Table (Start);
                Continuation : Boolean;
 
+               Ctr          : Nat;
+               --  Counter for statement entries
+
             begin
                case T.C1 is
 
@@ -127,7 +145,7 @@ begin
                         end if;
 
                         if Ctr = 0 then
-                           Write_Info_Initiate ('C');
+                           Write_SCO_Initiate (U);
                            if not Continuation then
                               Write_Info_Char ('S');
                               Continuation := True;
@@ -204,7 +222,7 @@ begin
                      --  For all other cases output decision line
 
                      else
-                        Write_Info_Initiate ('C');
+                        Write_SCO_Initiate (U);
                         Write_Info_Char (T.C1);
 
                         if T.C1 /= 'X' then

gcc/ada/scos.ads

@@ -458,8 +458,8 @@ package SCOs is
 
    --  This table keeps track of the units and the corresponding starting and
    --  ending indexes (From, To) in the SCO table. Note that entry zero is
-   --  unused, it is for convenience in calling the sort routine. Thus the
-   --  real lower bound for active entries is 1.
+   --  present but unused, it is for convenience in calling the sort routine.
+   --  Thus the lower bound for real entries is 1.
 
    type SCO_Unit_Index is new Int;
    --  Used to index values in this table. Values start at 1 and are assigned

gcc/ada/sem_ch4.adb

@@ -277,7 +277,8 @@ package body Sem_Ch4 is
    --  the call may be overloaded with both interpretations.
 
    function Try_Object_Operation
-     (N : Node_Id; CW_Test_Only : Boolean := False) return Boolean;
+     (N            : Node_Id;
+      CW_Test_Only : Boolean := False) return Boolean;
    --  Ada 2005 (AI-252): Support the object.operation notation. If node N
    --  is a call in this notation, it is transformed into a normal subprogram
    --  call where the prefix is a parameter, and True is returned. If node
@@ -1763,6 +1764,9 @@ package body Sem_Ch4 is
    --  Start of processing for Analyze_Explicit_Dereference
 
    begin
+      --  If source node, check SPARK restriction. We guard this with the
+      --  source node check, because ???
+
       if Comes_From_Source (N) then
          Check_SPARK_Restriction ("explicit dereference is not allowed", N);
       end if;
@@ -4185,7 +4189,8 @@ package body Sem_Ch4 is
                --  Duplicate the call. This is required to avoid problems with
                --  the tree transformations performed by Try_Object_Operation.
 
-              and then Try_Object_Operation
+              and then
+                Try_Object_Operation
                   (N            => Sinfo.Name (New_Copy_Tree (Parent (N))),
                    CW_Test_Only => True)
             then
@@ -4194,6 +4199,7 @@ package body Sem_Ch4 is
          end if;
 
          if Etype (N) = Any_Type and then Is_Protected_Type (Prefix_Type) then
+
             --  Case of a prefix of a protected type: selector might denote
             --  an invisible private component.
 

gcc/ada/sem_ch6.adb

@@ -1355,8 +1355,7 @@ package body Sem_Ch6 is
 
          for J in reverse 0 .. Scope_Stack.Last loop
             Result := Scope_Stack.Table (J).Entity;
-            exit when Ekind (Result) /= E_Block
-              and then Ekind (Result) /= E_Loop
+            exit when not Ekind_In (Result, E_Block, E_Loop)
               and then Chars (Result) /= Name_uPostconditions;
          end loop;