[multiple changes]

2010-06-17  Robert Dewar  <dewar@adacore.com>

	* sem_warn.adb (Test_Ref): Abandon scan if access subprogram parameter
	found.

2010-06-17  Vincent Celier  <celier@adacore.com>

	* back_end.adb: Minor comment updates
	* switch-c.adb: Remove dependencies on gcc C sources
        * gcc-interface/Make-lang.in: Add a-comlin.o to the object file list
	for the compiler.

From-SVN: r160884

gcc/ada/ChangeLog

+2010-06-17  Robert Dewar  <dewar@adacore.com>
+
+	* sem_warn.adb (Test_Ref): Abandon scan if access subprogram parameter
+	found.
+
+2010-06-17  Vincent Celier  <celier@adacore.com>
+
+	* back_end.adb: Minor comment updates
+	* switch-c.adb: Remove dependencies on gcc C sources
+        * gcc-interface/Make-lang.in: Add a-comlin.o to the object file list
+	for the compiler.
+
 2010-06-17  Ed Schonberg  <schonberg@adacore.com>
 
 	* sem_ch12.adb: propagate Pragma_Enabled flag to generic.

gcc/ada/back_end.adb

@@ -48,15 +48,15 @@ package body Back_End is
 
    flag_stack_check : Int;
    pragma Import (C, flag_stack_check);
-   --  Indicates if stack checking is enabled, imported from toplev.c
+   --  Indicates if stack checking is enabled, imported from decl.c
 
    save_argc : Nat;
    pragma Import (C, save_argc);
-   --  Saved value of argc (number of arguments), imported from toplev.c
+   --  Saved value of argc (number of arguments), imported from misc.c
 
    save_argv : Arg_Array_Ptr;
    pragma Import (C, save_argv);
-   --  Saved value of argv (argument pointers), imported from toplev.c
+   --  Saved value of argv (argument pointers), imported from misc.c
 
    function Len_Arg (Arg : Pos) return Nat;
    --  Determine length of argument number Arg on original gnat1 command line
@@ -284,7 +284,7 @@ package body Back_End is
                Opt.No_Stdlib := True;
 
             elsif Is_Front_End_Switch (Argv) then
-               Scan_Front_End_Switches (Argv, Next_Arg);
+               Scan_Front_End_Switches (Argv, Integer (Next_Arg));
 
             --  All non-front-end switches are back-end switches
 

gcc/ada/gcc-interface/Make-lang.in

@@ -120,6 +120,7 @@ GNAT1_C_OBJS = ada/b_gnat1.o ada/adadecode.o ada/adaint.o ada/cstreams.o \
 GNAT_ADA_OBJS =	\
  ada/a-charac.o	\
  ada/a-chlat1.o	\
+ ada/a-comlin.o \
  ada/a-elchha.o	\
  ada/a-except.o	\
  ada/a-ioexce.o	\

gcc/ada/sem_warn.adb

@@ -539,6 +539,22 @@ package body Sem_Warn is
                return Abandon;
             end if;
 
+            --  If any of the arguments are of type access to subprogram, then
+            --  we may have funny side effects, so no warning in this case.
+
+            declare
+               Actual : Node_Id;
+            begin
+               Actual := First_Actual (N);
+               while Present (Actual) loop
+                  if Is_Access_Subprogram_Type (Etype (Actual)) then
+                     return Abandon;
+                  else
+                     Next_Actual (Actual);
+                  end if;
+               end loop;
+            end;
+
          --  Declaration of the variable in question
 
          elsif Nkind (N) = N_Object_Declaration

gcc/ada/switch-c.adb

@@ -23,6 +23,8 @@
 --                                                                          --
 ------------------------------------------------------------------------------
 
+with Ada.Command_Line; use Ada.Command_Line;
+
 with Debug;    use Debug;
 with Lib;      use Lib;
 with Osint;    use Osint;
@@ -38,27 +40,12 @@ with System.WCh_Con; use System.WCh_Con;
 
 package body Switch.C is
 
-   type Arg_Array is array (Nat) of Big_String_Ptr;
-   type Arg_Array_Ptr is access Arg_Array;
-   --  Types to access compiler arguments
-
-   save_argc : Nat;
-   pragma Import (C, save_argc);
-   --  Saved value of argc (number of arguments), imported from toplev.c
-
-   save_argv : Arg_Array_Ptr;
-   pragma Import (C, save_argv);
-   --  Saved value of argv (argument pointers), imported from toplev.c
-
    RTS_Specified : String_Access := null;
    --  Used to detect multiple use of --RTS= flag
 
-   function Len_Arg (Arg : Pos) return Nat;
-   --  Determine length of argument number Arg on original gnat1 command line
-
    function Switch_Subsequently_Cancelled
      (C        : String;
-      Arg_Rank : Pos)
+      Arg_Rank : Positive)
       return Boolean;
    --  This function is called from Scan_Front_End_Switches. It determines if
    --  the switch currently being scanned is followed by a switch of the form
@@ -66,28 +53,13 @@ package body Switch.C is
    --  and Scan_Front_End_Switches will cancel the effect of the switch. If
    --  no such switch is found, False is returned.
 
-   -------------
-   -- Len_Arg --
-   -------------
-
-   function Len_Arg (Arg : Pos) return Nat is
-   begin
-      for J in 1 .. Nat'Last loop
-         if save_argv (Arg).all (Natural (J)) = ASCII.NUL then
-            return J - 1;
-         end if;
-      end loop;
-
-      raise Program_Error;
-   end Len_Arg;
-
    -----------------------------
    -- Scan_Front_End_Switches --
    -----------------------------
 
    procedure Scan_Front_End_Switches
      (Switch_Chars : String;
-      Arg_Rank     : Pos)
+      Arg_Rank     : Positive)
    is
       First_Switch : Boolean := True;
       --  False for all but first switch
@@ -1126,19 +1098,16 @@ package body Switch.C is
 
    function Switch_Subsequently_Cancelled
      (C        : String;
-      Arg_Rank : Pos)
+      Arg_Rank : Positive)
       return Boolean
    is
-      Arg : Pos;
-
+      Arg : Positive;
+      Max : constant Natural := Argument_Count;
    begin
       Arg := Arg_Rank + 1;
-      while Arg < save_argc loop
+      while Arg < Max loop
          declare
-            Argv_Ptr : constant Big_String_Ptr := save_argv (Arg);
-            Argv_Len : constant Nat            := Len_Arg (Arg);
-            Argv     : constant String         :=
-                         Argv_Ptr (1 .. Natural (Argv_Len));
+            Argv : constant String := Argument (Arg);
          begin
             if Argv = "-gnat-" & C then
                return True;

gcc/ada/switch-c.ads

@@ -33,7 +33,7 @@ package Switch.C is
 
    procedure Scan_Front_End_Switches
      (Switch_Chars : String;
-      Arg_Rank     : Pos);
+      Arg_Rank     : Positive);
    --  Procedures to scan out front end switches stored in the given string.
    --  The first character is known to be a valid switch character, and there
    --  are no blanks or other switch terminator characters in the string, so