* s-atacco.ads, a-direio.adb: Protect use of 'Constrained by warnings

	on/off, since this is an obsolescent feature, for which we now generate
	a warning.

	* sem_attr.adb (Analyze_Attribute, case Constrained): Issue warning if
	warning mode is set and obsolescent usage of this attribute occurs.
	(Resolve_Access, case 'Access): Note that GNAT uses the context type to
	disambiguate overloaded prefixes, in accordance with AI-235. GNAT code
	predates, and partly motivates, the adoption of the AI.
	Implement new Ada 2005 attribute Mod

	* exp_attr.adb (Expand_N_Attribute_Reference): Implement Ada 2005
	attribute Mod.

	* par-ch4.adb (P_Name): In Ada 2005 mode, recognize new attribute Mod

	* snames.h, snames.ads, snames.adb: Add entry for No_Dependence for
	pragma restrictions.
	New entry for Ada 2005 attribute Mod.

	* par-prag.adb:
	Add recognition of new pragma Restrictions No_Dependence
	Recognize restriction No_Obsolescent_Features at parse time

	* bcheck.adb: Add circuitry for checking for consistency of
	No_Dependence restrictions.

	* lib-writ.ads, lib-writ.adb: Output new R lines for No_Dependence
	restrictions.

	* restrict.ads, restrict.adb: Add subprograms to deal with
	No_Dependence restrictions.

	* rtsfind.adb: Check that implicit with's do not violate No_Dependence
	restrictions.

	* sem_ch3.adb, sem_ch11.adb, sem_ch13.adb, lib-xref.adb,
	sem_attr.adb: Add check for new restriction No_Obsolescent_Features

	* scn.ads, prj-err.ads, prj-err.adb, ali-util.adb, gprep.adb: Add new
	dummy parameter to scng instantiation.
	Needed for new restriction No_Obsolescent_Features

	* scn.adb: (Obsolescent_Check): New procedure
	Needed for new restriction No_Obsolescent_Features

	* scng.ads, scng.adb: Always allow wide characters in Ada 2005 mode, as
	specified by AI-285, needed for implementation of AI-388 (adding greek
	pi to Ada.Numerics).
	Add new generic formal to scng, needed for new restriction
	No_Obsolescent_Features.

	* s-rident.ads: Add new restriction No_Obsolescent_Features.

	* ali.ads, ali.adb: Adjustments for reading new No_Dependence
	restrictions lines.
	(Scan_ALI): When finding an unexpected character on an R line, raise
	exception Bad_R_Line, instead of calling Fatal_Error, so that, when
	Ignore_Errors is True, default restrictions are set and scanning of the
	ALI file continues with the next line. Also, when Bad_R_Line is raised
	and Ignore_Errors is True, skip to the end of le line.

	* sem_ch10.adb: Check that explicit with's do not violate
	No_Dependence restrictions.
	(Install_Withed_Unit): Add code to implement AI-377 and diagnose
	illegal context clauses containing child units of instance.

	* sem_prag.adb: Processing and checking for new No_Dependence
	restrictions.
	(Analyze_Pragma, case Psect_Object): Call Check_Arg_Is_External_Name to
	analyze and check the External argument.

	* a-numeri.ads: Add greek letter pi as alternative spelling of Pi


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@92829 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 14 insertions, 2 deletions

diff --git a/gcc/ada/a-direio.adb b/gcc/ada/a-direio.adb
index 3c5743bc439..0c01d1a6d4b 100644
--- a/gcc/ada/a-direio.adb
+++ b/gcc/ada/a-direio.adb
@@ -6,7 +6,7 @@
 --                                                                          --
 --                                 B o d y                                  --
 --                                                                          --
---          Copyright (C) 1992-2003 Free Software Foundation, Inc.          --
+--          Copyright (C) 1992-2004 Free Software Foundation, Inc.          --
 --                                                                          --
 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
 -- terms of the  GNU General Public License as published  by the Free Soft- --
@@ -183,9 +183,15 @@ package body Ada.Direct_IO is
       --  For a non-constrained variant record type, we read into an
       --  intermediate buffer, since we may have the case of discriminated
       --  records where a discriminant check is required, and we may need
-      --  to assign only part of the record buffer originally written
+      --  to assign only part of the record buffer originally written.
 
+      --  Note: we have to turn warnings on/off because this use of
+      --  the Constrained attribute is an obsolescent feature.
+
+      pragma Warnings (Off);
       if not Element_Type'Constrained then
+         pragma Warnings (On);
+
          declare
             Buf : Element_Type;
 
@@ -205,7 +211,13 @@ package body Ada.Direct_IO is
    begin
       --  Same processing for unconstrained case as above
 
+      --  Note: we have to turn warnings on/off because this use of
+      --  the Constrained attribute is an obsolescent feature.
+
+      pragma Warnings (Off);
       if not Element_Type'Constrained then
+         pragma Warnings (On);
+
          declare
             Buf : Element_Type;