2004-04-19 Arnaud Charlet <charlet@act-europe.fr>

	* 5isystem.ads: Removed, unused.

	* gnat_rm.texi: Redo 1.13 change.

2004-04-19  Robert Dewar  <dewar@gnat.com>

	* s-stoele.ads: Clean up definition of Storage_Offset (the new
	definition is cleaner, avoids the kludge of explicit Standard operator
	references, and also is consistent with a visible System.Address with
	no visible operations.

	* s-geveop.adb: Add declarations to avoid assumption of visible
	operations on type System.Address (since these might not be available
	if Address is a non-private type for which the operations
	are made abstract).

	* sem_eval.adb: Minor reformatting

	* s-carsi8.ads, s-carun8.ads, s-casi16.ads, s-casi32.ads,
	s-casi64.ads, s-caun16.ads, s-caun32.ads, s-caun64.ads: Minor
	reformatting (new function spec format).

	* s-auxdec.adb, s-carsi8.adb, s-carun8.adb, s-casi16.adb,
	s-casi32.adb, s-casi64.adb, s-caun16.adb, s-caun32.adb,
	s-caun64.adb: Add declarations to avoid assumption of visible
	operations on type System.Address (since these might not be available
	if Address is a non-private type for which the operations are made
	abstract).

	* lib.ads, lib.adb (Synchronize_Serial_Number): New procedure.

	* exp_intr.adb: Minor comment update

	* exp_aggr.adb, exp_attr.adb, exp_ch13.adb: Minor reformatting.

	* 5omastop.adb: Add declarations to avoid assumption of visible
	operations on type System.Address (since these might not be available
	if Address is a non-private type for which the operations
	are made abstract).

2004-04-19  Vincent Celier  <celier@gnat.com>

	* switch-m.adb: (Scan_Make_Switches): Process new switch -eL

	* prj-pars.ads (Parse): New Boolean parameter Process_Languages,
	defaulted to Ada.

	* prj-proc.adb (Process): New Boolean parameter Process_Languages,
	defaulted to Ada.
	Call Check with Process_Languages.
	(Check): New Boolean parameter Process_Languages. Call Recursive_Check
	with Process_Languages.
	(Recursive_Check): New Boolean parameter Process_Languages. Call
	Nmsc.Ada_Check or Nmsc.Other_Languages_Check according to
	Process_Languages.

	* prj-proc.ads (Process): New Boolean parameter Process_Languages,

	* prj-util.ads, prj-util.adb (Executable_Of): New Boolean
	parameter Ada_Main, defaulted to True.
	Check for Ada specific characteristics only when Ada_Main is True.

	* opt.ads: (Follow_Links): New Boolean flag for gnatmake

	* prj.adb: (Project_Empty): Add new Project_Data components.

	* prj.ads: New types and tables for non Ada languages.
	(Project_Data): New components Languages, Impl_Suffixes,
	First_Other_Source, Last_Other_Source, Imported_Directories_Switches,
	Include_Path, Include_Data_Set.

	* prj-env.ads, prj-env.adb: Minor reformatting

	* prj-nmsc.ads, prj-nmsc.adb: (Other_Languages_Check): New procedure
	Put subprograms in alphabetical order

	* prj-pars.adb (Parse): New Boolean parameter Process_Languages,
	defaulted to Ada; Call Prj.Proc.Process with Process_Languages and
	Opt.Follow_Links.

	* mlib-prj.adb: Back out modification in last version, as they are
	incorrect.
	(Build_Library.Check_Libs): Remove useless pragma Warnings (Off)

	* make.adb: (Mains): Moved to package Makeutl
	(Linker_Opts): Moved to package Makeutl
	(Is_External_Assignment): Moved to package Makeutl
	(Test_If_Relative_Path): Moved to package Makeutl
	(Gnatmake): Move sorting of linker options to function
	Makeutl.Linker_Options_Switches.

	* Makefile.in: Add makeutl.o to the object files for gnatmake

	* makeusg.adb: Add line for new switch -eL.

	* gnatls.adb (Image): New function.
	(Output_Unit): If in verbose mode, output the list of restrictions
	specified by pragmas Restrictions.

	* 5bml-tgt.adb, 5vml-tgt.adb (Build_Dynamic_Library): Do not use
	Text_IO.

	* a-calend.adb (Split): Shift the date by multiple of 56 years, if
	needed, to put it in the range 1970 (included) - 2026 (excluded).
	(Time_Of): Do not shift Unix_Min_Year (1970).
	Shift the date by multiple of 56 years, if needed, to put it in the
	range 1970 (included) - 2026 (excluded).

	* adaint.h, adaint.c (__gnat_set_executable): New function.

2004-04-19  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

	* trans.c (tree_transform, case N_Subprogram_Body): Temporarily push
	and pop GC context.
	(tree_transform, case N_Procedure_Call): Fix typo in setting TREE_TYPE.
	(tree_transform, case N_Label): Don't set LABEL_STMT_FIRST_IN_EH.
	(tree_transform, case N_Procedure_Call_Statement): Build a tree.
	(tree_transform, case N_Code_Statement): Likewise.
	(gnat_expand_stmt, case LABEL_STMT): Don't look at
	LABEL_STMT_FIRST_IN_EH.
	(gnat_expand_stmt, case ASM_STMT): New case.

	* utils2.c (build_unary_op): Properly set TREE_READONLY of
	UNCONSTRAINED_ARRAY_REF.

	* utils.c (poplevel): Temporarily push/pop GC context around inline
	function expansion.

	* decl.c (maybe_variable): Properly set TREE_READONLY of
	UNCONSTRAINED_ARRAY_REF.
	(make_packable_type): Only reference TYPE_IS_PADDING_P for RECORD_TYPE.

	* ada-tree.def: (ASM_STMT): New.

	* ada-tree.h: (LABEL_STMT_FIRST_IN_EH): Deleted.
	(ASM_STMT_TEMPLATE, ASM_STMT_OUTPUT, ASM_STMT_ORIG_OUT,
	ASM_STMT_INPUT): New.
	(ASM_STMT_CLOBBER): Likewise.

2004-04-19  Thomas Quinot  <quinot@act-europe.fr>

	* a-except.adb, s-parint.ads, s-parint.adb, types.ads, types.h: Use
	general rcheck mechanism to raise Program_Error for E.4(18), instead
	of a custom raiser in System.Partition_Interface.
	Part of general cleanup work before PolyORB integration.

	* snames.ads, snames.adb: Add new runtime library entities and names
	for PolyORB DSA.

	* sem_dist.ads, sem_dist.adb (Get_Subprogram_Id): Move from sem_dist to
	exp_dist.
	(Build_Subprogram_Id): New subprogram provided by exp_dist
	Code reorganisation in preparation for PolyORB integration.

	* exp_dist.ads, exp_dist.adb (Get_Subprogram_Id): Move from sem_dist to
	exp_dist.
	(Build_Subprogram_Id): New subprogram provided by exp_dist

	* sem_ch4.adb (Analyze_One_Call): Fix error message for mismatch in
	actual parameter types for call to dereference of an
	access-to-subprogram type.

	* rtsfind.ads: Add new runtime library entities and names for PolyORB
	DSA.

	* gnatlink.adb (Value): Remove. Use Interfaces.C.Strings.Value
	instead, which has the same behaviour here since we never pass it a
	NULL pointer.

	* link.c (run_path_option, Solaris case): Use -Wl, as for other
	platforms.

	* Makefile.in: adjust object file lists for gnatlink and gnatmake
	to account for new dependency upon Interfaces.C.Strings + link.o
	For x86 FreeBSD, use 86numaux.

	* make.adb, gnatcmd.adb: Linker_Library_Path_Option has been moved up
	from Mlib.Tgt to Mlib.

	* mlib.ads, mlib.adb (Linker_Library_Path_Option): New subprogram, now
	target-independent.

	* mlib-tgt.ads, mlib-tgt.adb (Linker_Library_Path_Option): Remove
	target-specific versions of this subprogram, now implemented as a
	target-independent function in Mlib.

	* 5aml-tgt.adb, 5bml-tgt.adb, 5gml-tgt.adb, 5hml-tgt.adb, 5lml-tgt.adb,
	5sml-tgt.adb, 5vml-tgt.adb, 5zml-tgt.adb, 5wml-tgt.adb
	(Linker_Library_Path_Option): Remove target-specific versions of this
	subprogram, now implemented as a target-independent function in Mlib.

	* atree.adb: (Allocate_Initialize_Node): New subprogram.
	Factors out node table slots allocation.
	(Fix_Parents): New subprogram.
	Encapsulate the pattern of fixing up parent pointers for syntactic
	children of a rewritten node.
	(New_Copy_Tree): Use New_Copy to copy non-entity nodes.
	(Rewrite): Use New_Copy when creating saved copy of original node.
	(Replace): Use Copy_Node to copy nodes.

2004-04-19  Javier Miranda  <miranda@gnat.com>

	* sprint.adb (Sprint_Node_Actual): Give support to the new
	Access_To_Subprogram node available in Access_Definition nodes. In
	addition, give support to the AI-231 node fields: null-exclusion,
	all-present, constant-present.

	* sem_util.ads, sem_util.adb: (Has_Declarations): New subprogram

	* sinfo.ads, sinfo.adb:
	New field Access_To_Subprogram_Definition in Access_Definition nodes

	* sem_ch6.adb (Process_Formals): Move here the code that creates and
	decorates internal subtype declaration corresponding to the
	null-excluding formal. This code was previously in Set_Actual_Subtypes.
	In addition, carry out some code cleanup on this code. In case of
	access to protected subprogram call
	Replace_Anonymous_Access_To_Protected_Subprogram.
	(Set_Actual_Subtypes): Code cleanup.

	* sem_ch8.adb (Analyze_Object_Renaming): Remove un-necessary call to
	Find_Type in case of anonymous access renamings. Add warning in case of
	null-excluding attribute used in anonymous access renaming.

	* sem_ch3.ads (Replace_Anonymous_Access_To_Protected_Subprogram): New
	subprogram

	* sem_ch3.adb (Replace_Anonymous_Access_To_Protected_Subprogram): New
	subprogram.
	(Access_Definition): In case of anonymous access to subprograms call
	the corresponding semantic routine to decorate the node.
	(Access_Subprogram_Declaration): Addition of some comments indicating
	some code that probably should be added here. Detected by comparison
	with the access_definition subprogram.
	(Analyze_Component_Declaration): In case of access to protected
	subprogram call Replace_Anonymous_Access_To_Protected.
	(Array_Type_Declaration): In case of access to protected subprogram call
	Replace_Anonymous_Access_To_Protected_Subprogram.
	(Process_Discriminants): In case of access to protected subprogram call
	Replace_Anonymous_Access_To_Protected_Subprogram.

	* par.adb (P_Access_Definition): New formal that indicates if the
	null-exclusion part was present.
	(P_Access_Type_Definition): New formal that indicates if the caller has
	already parsed the null-excluding part.

	* par-ch3.adb (P_Subtype_Declaration): Code cleanup.
	(P_Identifier_Declarations): Code cleanup and give support to renamings
	of anonymous access to subprogram types.
	(P_Derived_Type_Def_Or_Private_Ext_Decl): Code cleanup.
	(P_Array_Type_Definition): Give support to AI-254.
	(P_Component_Items): Give support to AI-254.
	(P_Access_Definition): New formal that indicates if the header was
	already parsed by the caller.
	(P_Access_Type_Definition): New formal that indicates if the caller has
	already parsed the null-excluding part.

	* par-ch6.adb (P_Formal_Part): Add the null-excluding parameter to the
	call to P_Access_Definition.

2004-04-19  Geert Bosch  <bosch@gnat.com>

	* checks.adb (Apply_Float_Conversion_Check): New procedure to implement
	the delicate semantics of floating-point to integer conversion.
	(Apply_Type_Conversion_Checks): Use Apply_Float_Conversion_Check.

	* eval_fat.adb (Machine_Mantissa): Moved to spec.
	(Machine_Radix): New function.

	* eval_fat.ads (Machine_Mantissa): Moved from body for use in
	conversion checks.
	(Machine_Radix): New function also for use in conversion checks.

2004-04-19  Ed Schonberg  <schonberg@gnat.com>

	* par-prag.adb (Source_File_Name_Project): Fix typo in error message.

	* exp_ch9.adb (Expand_Access_Protected_Subprogram_Type): Call analyze
	to decorate the access-to-protected subprogram and the equivalent type.

	* checks.adb (Null_Exclusion_Static_Checks): Code cleanup. Give support
	to anonymous access to subprogram types.

	* exp_ch4.adb (Expand_N_In): Preserve Static flag before
	constant-folding, for legality checks in contexts that require an RM
	static expression.

	* exp_ch6.adb (Expand_N_Function_Call): If call may generate large
	temporary but stack checking is not enabled, increment serial number
	to so that symbol generation is consistent with and without stack
	checking.

	* exp_util.ads, exp_util.adb (May_Generate_Large_Temp): Predicate is
	independent on whether stack checking is enabled, caller must check
	the corresponding flag.

	* sem_ch3.adb (Constrain_Index): Index bounds given by attributes need
	range checks.
	(Build_Derived_Concurrent_Type): Inherit Is_Constrained flag from
	parent if it has discriminants.
	(Build_Derived_Private_Type): Constructed full view does
	not come from source.
	(Process_Discriminants): Default discriminants on a tagged type are
	legal if this is the internal completion of a private untagged
	derivation.

	* sem_ch6.adb (Set_Actual_Subtypes): The generated declaration needs
	no constraint checks, because it corresponds to an existing object.

	* sem_prag.adb (Process_Convention): Pragma applies
	only to subprograms in the same declarative part, i.e. the same unit,
	not the same scope.

	* sem_res.adb (Valid_Conversion): In an instance or inlined body,
	ignore type mismatch on a numeric conversion if expression comes from
	expansion.

2004-04-19  Sergey Rybin  <rybin@act-europe.fr>

	* sem_elim.adb (Process_Eliminate_Pragma): Remove the processing for
	Homonym_Number parameter, add processing for Source_Location parameter
	corresponding.
	(Check_Eliminated): Remove the check for homonym numbers, add the check
	for source location traces.

	* sem_elim.ads (Process_Eliminate_Pragma): Replace Arg_Homonym_Number
	with Arg_Source_Location corresponding to the changes in the format of
	the pragma.

	* sem_prag.adb: (Analyze_Pragma): Changes in the processing of
	Eliminate pragma corresponding to the changes in the format of the
	pragma: Homonym_Number is replaced with Source_Location, two ways of
	distinguishing homonyms are mutially-exclusive.

2004-04-19  Joel Brobecker  <brobecker@gnat.com>

	* get_targ.ads (Get_No_Dollar_In_Label): Remove.

	* exp_dbug.adb (Output_Homonym_Numbers_Suffix): Remove use of
	No_Dollar_In_Label, no longer necessary, as it is always True.
	(Strip_Suffixes): Likewise.

2004-04-19  Gary Dismukes  <dismukes@gnat.com>

	* s-stalib.ads (type Exception_Code): Use Integer'Size for exponent of
	modulus for compatibility with size clause on targets with 16-bit
	Integer.

	* layout.adb (Discrimify): In the case of private types, set Vtyp to
	full type to fix type mismatches on calls to size functions for
	discriminant-dependent array components.

2004-04-19  Jerome Guitton  <guitton@act-europe.fr>

	* Makefile.in (gnatlib-zcx): New target, for building a ZCX run-time
	lib.

2004-04-19  Pascal Obry  <obry@gnat.com>

	* mdll-utl.adb (Locate): New version is idempotent.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@80856 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 84 insertions, 70 deletions

diff --git a/gcc/ada/sem_ch6.adb b/gcc/ada/sem_ch6.adb
index bd2a07fcd10..4fe8cdbcea7 100644
--- a/gcc/ada/sem_ch6.adb
+++ b/gcc/ada/sem_ch6.adb
@@ -4881,15 +4881,94 @@ package body Sem_Ch6 is
                  Parameter_Type (Param_Spec), Formal_Type);
             end if;
 
+            --  Ada 0Y (AI-231): Create and decorate an internal subtype
+            --  declaration corresponding to the null-excluding type of the
+            --  formal in the enclosing scope. In addition, replace the
+            --  parameter type of the formal to this internal subtype.
+
+            if Null_Exclusion_Present (Param_Spec) then
+               declare
+                  Loc   : constant Source_Ptr := Sloc (Param_Spec);
+
+                  Anon  : constant Entity_Id :=
+                            Make_Defining_Identifier (Loc,
+                              Chars => New_Internal_Name ('S'));
+
+                  Curr_Scope : constant Scope_Stack_Entry :=
+                                 Scope_Stack.Table (Scope_Stack.Last);
+
+                  Ptype : constant Node_Id := Parameter_Type (Param_Spec);
+                  Decl  : Node_Id;
+                  P     : Node_Id := Parent (Parent (Related_Nod));
+
+               begin
+                  Set_Is_Internal (Anon);
+
+                  Decl :=
+                    Make_Subtype_Declaration (Loc,
+                      Defining_Identifier      => Anon,
+                        Null_Exclusion_Present => True,
+                        Subtype_Indication     =>
+                          New_Occurrence_Of (Etype (Ptype), Loc));
+
+                  --  Propagate the null-excluding attribute to the new entity
+
+                  if Null_Exclusion_Present (Param_Spec) then
+                     Set_Null_Exclusion_Present (Param_Spec, False);
+                     Set_Can_Never_Be_Null (Anon);
+                  end if;
+
+                  Mark_Rewrite_Insertion (Decl);
+
+                  --  Insert the new declaration in the nearest enclosing scope
+
+                  while not Has_Declarations (P) loop
+                     P := Parent (P);
+                  end loop;
+
+                  Prepend (Decl, Declarations (P));
+
+                  Rewrite (Ptype, New_Occurrence_Of (Anon, Loc));
+                  Mark_Rewrite_Insertion (Ptype);
+
+                  --  Analyze the new declaration in the context of the
+                  --  enclosing scope
+
+                  Scope_Stack.Decrement_Last;
+                  Analyze (Decl);
+                  Scope_Stack.Append (Curr_Scope);
+
+                  Formal_Type := Anon;
+               end;
+            end if;
+
+            --  Ada 0Y (AI-231): Static checks
+
+            if Null_Exclusion_Present (Param_Spec)
+              or else Can_Never_Be_Null (Entity (Ptype))
+            then
+               Null_Exclusion_Static_Checks (Param_Spec);
+            end if;
+
          --  An access formal type
 
          else
             Formal_Type :=
               Access_Definition (Related_Nod, Parameter_Type (Param_Spec));
+
+            --  Ada 0Y (AI-254)
+
+            if Present (Access_To_Subprogram_Definition
+                         (Parameter_Type (Param_Spec)))
+              and then Protected_Present (Access_To_Subprogram_Definition
+                                           (Parameter_Type (Param_Spec)))
+            then
+               Formal_Type :=
+                 Replace_Anonymous_Access_To_Protected_Subprogram (Param_Spec);
+            end if;
          end if;
 
          Set_Etype (Formal, Formal_Type);
-
          Default := Expression (Param_Spec);
 
          if Present (Default) then
@@ -4948,19 +5027,6 @@ package body Sem_Ch6 is
 
                   Apply_Scalar_Range_Check (Default, Formal_Type);
                end if;
-
-            end if;
-
-            --  Ada 0Y (AI-231): Static checks
-
-            Ptype := Parameter_Type (Param_Spec);
-
-            if Extensions_Allowed
-              and then Nkind (Ptype) /= N_Access_Definition
-              and then (Null_Exclusion_Present (Parent (Formal))
-                        or else Can_Never_Be_Null (Entity (Ptype)))
-            then
-               Null_Exclusion_Static_Checks (Param_Spec);
             end if;
          end if;
 
@@ -5010,7 +5076,6 @@ package body Sem_Ch6 is
       T              : Entity_Id;
       First_Stmt     : Node_Id := Empty;
       AS_Needed      : Boolean;
-      Null_Exclusion : Boolean := False;
 
    begin
       --  If this is an emtpy initialization procedure, no need to create
@@ -5065,17 +5130,6 @@ package body Sem_Ch6 is
          then
             AS_Needed := True;
 
-         --  Ada 0Y (AI-231)
-
-         elsif Extensions_Allowed
-           and then Is_Access_Type (T)
-           and then Null_Exclusion_Present (Parent (Formal))
-           and then Nkind (Parameter_Type (Parent (Formal)))
-                    /= N_Access_Definition
-         then
-            AS_Needed      := True;
-            Null_Exclusion := True;
-
          --  All other cases do not need an actual subtype
 
          else
@@ -5086,40 +5140,7 @@ package body Sem_Ch6 is
          --  unconstrained discriminated records.
 
          if AS_Needed then
-
-            --  Ada 0Y (AI-231): Generate actual null-excluding subtype
-
-            if Extensions_Allowed
-              and then Null_Exclusion
-            then
-               declare
-                  Loc      : constant Source_Ptr := Sloc (Formal);
-                  Anon     : constant Entity_Id :=
-                               Make_Defining_Identifier (Loc,
-                                 New_Internal_Name ('S'));
-                  Ptype    : constant Node_Id
-                               := Parameter_Type (Parent (Formal));
-               begin
-                  --  T == Etype (Formal)
-                  Set_Is_Internal (Anon);
-                  Decl :=
-                    Make_Subtype_Declaration (Loc,
-                      Defining_Identifier      => Anon,
-                        Null_Exclusion_Present => True,
-                        Subtype_Indication     =>
-                          New_Occurrence_Of (Etype (Ptype), Loc));
-                  Mark_Rewrite_Insertion (Decl);
-                  Prepend (Decl, Declarations (Parent (N)));
-
-                  Rewrite (Ptype, New_Occurrence_Of (Anon, Loc));
-                  Mark_Rewrite_Insertion (Ptype);
-                  --   Set_Scope (Anon, Scope (Scope (Formal)));
-
-                  Set_Etype (Formal, Anon);
-                  Set_Null_Exclusion_Present (Parent (Formal), False);
-               end;
-
-            elsif Nkind (N) = N_Accept_Statement then
+            if Nkind (N) = N_Accept_Statement then
 
                --  If expansion is active, The formal is replaced by a local
                --  variable that renames the corresponding entry of the
@@ -5151,17 +5172,10 @@ package body Sem_Ch6 is
                Mark_Rewrite_Insertion (Decl);
             end if;
 
-            Analyze (Decl);
-
-            --  Ada 0Y (AI-231): Previous analysis leaves the entity of the
-            --  null-excluding subtype declaration associated with the internal
-            --  scope; because this declaration has been inserted before the
-            --  subprogram we associate it now with the enclosing scope.
+            --  The declaration uses the bounds of an existing object,
+            --  and therefore needs no constraint checks.
 
-            if Null_Exclusion then
-               Set_Scope (Defining_Identifier (Decl),
-                          Scope (Scope (Formal)));
-            end if;
+            Analyze (Decl, Suppress => All_Checks);
 
             --  We need to freeze manually the generated type when it is
             --  inserted anywhere else than in a declarative part.