2007-04-06 Javier Miranda <miranda@adacore.com>

	    Matt Heaney  <heaney@adacore.com>
	    Robert Dewar  <dewar@adacore.com>

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	a-ztexio.adb, a-ztexio.ads: Addition of null-exclusion to anonymous
	access types.
	Update documentation.
	Minor rewording.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@123538 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 18 insertions, 13 deletions

diff --git a/gcc/ada/s-taprop-solaris.adb b/gcc/ada/s-taprop-solaris.adb
index 9da267ec477..c17bf6d958f 100644
--- a/gcc/ada/s-taprop-solaris.adb
+++ b/gcc/ada/s-taprop-solaris.adb
@@ -168,8 +168,8 @@ package body System.Task_Primitives.Operations is
 
    procedure Abort_Handler
      (Sig     : Signal;
-      Code    : access siginfo_t;
-      Context : access ucontext_t);
+      Code    : not null access siginfo_t;
+      Context : not null access ucontext_t);
    --  Target-dependent binding of inter-thread Abort signal to
    --  the raising of the Abort_Signal exception.
    --  See also comments in 7staprop.adb
@@ -259,8 +259,8 @@ package body System.Task_Primitives.Operations is
 
    procedure Abort_Handler
      (Sig     : Signal;
-      Code    : access siginfo_t;
-      Context : access ucontext_t)
+      Code    : not null access siginfo_t;
+      Context : not null access ucontext_t)
    is
       pragma Unreferenced (Sig);
       pragma Unreferenced (Code);
@@ -535,7 +535,7 @@ package body System.Task_Primitives.Operations is
 
    procedure Initialize_Lock
      (Prio : System.Any_Priority;
-      L    : access Lock)
+      L    : not null access Lock)
    is
       Result : Interfaces.C.int;
 
@@ -555,7 +555,7 @@ package body System.Task_Primitives.Operations is
    end Initialize_Lock;
 
    procedure Initialize_Lock
-     (L     : access RTS_Lock;
+     (L     : not null access RTS_Lock;
       Level : Lock_Level)
    is
       Result : Interfaces.C.int;
@@ -575,7 +575,7 @@ package body System.Task_Primitives.Operations is
    -- Finalize_Lock --
    -------------------
 
-   procedure Finalize_Lock (L : access Lock) is
+   procedure Finalize_Lock (L : not null access Lock) is
       Result : Interfaces.C.int;
 
    begin
@@ -584,7 +584,7 @@ package body System.Task_Primitives.Operations is
       pragma Assert (Result = 0);
    end Finalize_Lock;
 
-   procedure Finalize_Lock (L : access RTS_Lock) is
+   procedure Finalize_Lock (L : not null access RTS_Lock) is
       Result : Interfaces.C.int;
 
    begin
@@ -597,7 +597,9 @@ package body System.Task_Primitives.Operations is
    -- Write_Lock --
    ----------------
 
-   procedure Write_Lock (L : access Lock; Ceiling_Violation : out Boolean) is
+   procedure Write_Lock
+     (L : not null access Lock; Ceiling_Violation : out Boolean)
+   is
       Result : Interfaces.C.int;
 
    begin
@@ -637,7 +639,7 @@ package body System.Task_Primitives.Operations is
    end Write_Lock;
 
    procedure Write_Lock
-     (L          : access RTS_Lock;
+     (L          : not null access RTS_Lock;
      Global_Lock : Boolean := False)
    is
       Result : Interfaces.C.int;
@@ -667,7 +669,8 @@ package body System.Task_Primitives.Operations is
    -- Read_Lock --
    ---------------
 
-   procedure Read_Lock (L : access Lock; Ceiling_Violation : out Boolean) is
+   procedure Read_Lock
+     (L : not null access Lock; Ceiling_Violation : out Boolean) is
    begin
       Write_Lock (L, Ceiling_Violation);
    end Read_Lock;
@@ -676,7 +679,7 @@ package body System.Task_Primitives.Operations is
    -- Unlock --
    ------------
 
-   procedure Unlock (L : access Lock) is
+   procedure Unlock (L : not null access Lock) is
       Result  : Interfaces.C.int;
 
    begin
@@ -700,7 +703,9 @@ package body System.Task_Primitives.Operations is
       end if;
    end Unlock;
 
-   procedure Unlock (L : access RTS_Lock; Global_Lock : Boolean := False) is
+   procedure Unlock
+     (L : not null access RTS_Lock; Global_Lock : Boolean := False)
+   is
       Result : Interfaces.C.int;
    begin
       if not Single_Lock or else Global_Lock then