a-tasatt.adb: Add a comment at the beginning of the package explaining why in general...

    gcc/ada/
	* a-tasatt.adb: Add a comment at the beginning of the package
	explaining why in general 'Unchecked_Access must be used instead
	of 'Access.

From-SVN: r130139

gcc/ada/ChangeLog

+2007-11-13  Samuel Tardieu  <sam@rfc1149.net>
+
+	* a-tasatt.adb: Add a comment at the beginning of the package
+	explaining why in general 'Unchecked_Access must be used instead
+	of 'Access.
+
 2007-11-10  Samuel Tardieu  <sam@rfc1149.net>
 
 	* a-tasatt.adb: Revert previous change for this file as it will

gcc/ada/a-tasatt.adb

@@ -217,6 +217,10 @@
 --  "passed" in via access discriminants. GNAT was having trouble with access
 --  discriminants, so all this work was moved to the package body.
 
+--  Note that references to objects declared in this package body must in
+--  general use 'Unchecked_Access instead of 'Access as the package can be
+--  instantiated from within a local context.
+
 with System.Error_Reporting;
 --  Used for Shutdown;