2004-10-04 Chao-ying Fu <fu@mips.com>

[pf3gnuchains/gcc-fork.git] / gcc / ada / ChangeLog

2004-10-04  Pascal Obry  <obry@gnat.com>

        * tracebak.c: Always set LOWEST_ADDR to 0 on Win32 (as done on all
        other x86 platforms).

2004-10-04  Olivier Hainque  <hainque@act-europe.fr>

        * s-tassta.adb (Task_Wrapper): Make it Convention C, which makes sense
        in general and triggers stack alignment adjustment for thread entry
        points on targets where this is necessary.

2004-10-04  Bernard Banner  <banner@gnat.com>

        PR ada/13897

        * Makefile.in: Add section for powerpc linux
        Add variant i-vxwork-x86.ads

        * i-vxwork-x86.ads, system-linux-ppc.ads: New files.

2004-10-04  Olivier Hainque  <hainque@act-europe.fr>

        * init.c (__gnat_initialize): Call an Ada subprogram to perform the
        table registration calls when need be. Ensures no reference to the crt
        ctors symbol are issued in the SJLJ case, which avoids possible
        undefined symbol errors in the case of modules to be statically linked
        with the kernel.

2004-10-04  Javier Miranda  <miranda@gnat.com>

        * sem_ch4.adb (Try_Object_Operation): Reformat the code to expand
        in-line the code corresponding to subprogram Analyze_Actuals. In
        addition, analyze the actuals only in case of subprogram call.

2004-10-04  Ed Falis  <falis@gnat.com>

        * s-vxwork-x86.ads: (FP_CONTEXT): Defined to be correct size

2004-10-04  Sergey Rybin  <rybin@act-europe.fr>

        * g-dirope.ads (Base_Name): Clarify the meaning of the Suffix parameter
        in the documentation.

2004-10-04  Robert Dewar  <dewar@gnat.com>

        * sem_ch5.adb (Unblocked_Exit_Count): Now used for blocks as well as
        IF and CASE.
        (Analyze_Block_Statement): Add circuitry to detect following dead code
        (Check_Unreachable_Code): Handle case of block exit

2004-10-04  Robert Dewar  <dewar@gnat.com>

        * g-spipat.adb: (XMatch): Avoid warning for Logic_Error call
        (XMatchD): Avoid warning for Logic_Error call

2004-10-04  Robert Dewar  <dewar@gnat.com>

        * exp_ch4.adb (Is_Procedure_Actual): Correct so that this does not
        consider expressions buried within a procedure actual to be an actual.
        This caused some blowups with uses of packed slices within a procedure
        actual.

2004-10-04  Robert Dewar  <dewar@gnat.com>

        * exp_ch3.adb (Needs_Simple_Initialization): Modular packed arrays no
        longer need to be initialized to zero.
        (Get_Simple_Init_Val): Modular packed arrays no longer need to be
        initialized to zero.

        * checks.adb (Expr_Known_Valid): Packed arrays are now always
        considered valid, even if the representation is modular. That's correct
        now that we no longer initialize packed modular arrays to zero.

        * exp_dbug.ads: Clarify documentation on handling of PAD and JM
        suffixes. These are now documented as the only cases in which the
        debugger ignores outer records.
        Previously, the spec allowed arbitrary suffixes for this purpose.
        Change name of LJM to JM for packed array pad records
        Create separate section on packed array handling, and add a whole new
        set of comments to this section describing the situation with packed
        modular types and justification requirements depending on endianness.

2004-10-04  Robert Dewar  <dewar@gnat.com>

        * a-except.adb: Add a comment for last change

        * einfo.ads: Minor spelling correction in comment

        * exp_pakd.adb, gnatdll.adb, prj-attr.ads: Minor reformatting

        * sem_ch11.adb: Fix a case of using | instead of \ for continuation
        messages.

        * sem_util.ads: Minor comment update

2004-10-04  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch6.adb (Analyze_Subprogram_Body): Do not treat Inline as
        Inline_Always when in Configurable_Run_Time mode.

        * sem_prag.adb (Process_Convention): If entity is an inherited
        subprogram, apply convention to parent subprogram if in same scope.
        (Analyze_Pragma, case Inline): Do not treat Inline as Inline_Always
        when in Configurable_Run_Time mode.

2004-10-04  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch3.adb (Build_Derived_Record_Type): Set First/Last entity of
        class_wide type after component list has been inherited.

2004-10-04  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch12.adb (Check_Generic_Actuals): New predicate
        Denotes_Previous_Actual, to handle properly the case of a private
        actual that is also the component type of a subsequent array actual.
        The visibility status of the first actual is not affected when the
        second is installed.
        (Process_Nested_Formal): Subsidiary of Instantiate_Formal_Package, to
        make fully recursive the treatment of formals of packages declared
        with a box.
        (Restore_Nested_Formal): Subsidiary of Restore_Private_Views, to undo
        the above on exit from an instantiation.
        (Denotes_Formal_Package): When called from Restore_Private_Views, ignore
        current instantiation which is now complete.
        (Analyze_Package_Instantiation): No instantiated body is needed if the
        main unit is generic. Efficient, and avoid anomalies when a instance
        appears in a package accessed through rtsfind.

2004-10-04  Ed Schonberg  <schonberg@gnat.com>

        * exp_ch6.adb (Expand_N_Function_Call): If stack checking is enabled,
        do not generate a declaration for a temporary if the call is part of a
        library-level instantiation.

2004-10-04  Ed Schonberg  <schonberg@gnat.com>

        * sem_util.adb (Explain_Limited_Type): Ignore internal components when
        searching for a limited component to flag.

        * exp_attr.adb (Freeze_Stream_Subprogram): Subsidiary procedure to
        expansion of Input, to account for the fact that the implicit call
        generated by the attribute reference must freeze the user-defined
        stream subprogram. This is only relevant to 'Input, because it can
        appear in an object declaration, prior to the body of the subprogram.

        * sem_ch13.adb (Rep_Item_Too_Late): Make the error non-serious, so that
        expansion can proceed and further errors uncovered.
        (Minor clean up): Fix cases of using | instead of \ for continuation
        messages.

2004-10-04  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * cuintp.c, decl.c, utils2.c: Use gcc_assert and gcc_unreachable.

        * trans.c (assoc_to_constructor): Fix unused var warning if no checking.
        (gnat_gimplify_expr, case ADDR_EXPR): Fix error in last change.
        Use gcc_assert and gcc_unreachable.

        * decl.c (gnat_to_gnu_entity, case object): Check and process a
        specified alignment before validating size.
        (gnat_to_gnu_entity) <E_Modular_Integer_Subtype>: Create a
        stripped-down declaration for the type of the inner field when making
        a JM type.

        * utils.c (finish_record_type): Do not compute the size in units
        incrementally. Instead compute it once for the rep clause case.
        Use gcc_assert and gcc_unreachable.

2004-10-04  Vincent Celier  <celier@gnat.com>

        * a-dirval-mingw.adb (Invalid_Character): Add '\' as invalid character
        in file name.
        (Is_Valid_Path_Name): Take '/' as a directory separator.

2004-10-04  Vincent Celier  <celier@gnat.com>

        * prj-part.adb (Parse_Single_Project): Call Is_Extending_All
        (Extended_Project) only if Extended_Project is defined, to avoid
        assertion error.
        (Post_Parse_Context_Clause): Always call Set_Path_Name_Of with a
        resolved path.
        (Parse_Single_Project): Ditto.

        * prj-env.adb (Set_Ada_Paths.Add.Recursive_Add): Do not call
        Add_To_Project_Path for virtual projects.

2004-10-04  Vincent Celier  <celier@gnat.com>

        * mlib-tgt-tru64.adb, mlib-tgt-aix.adb, mlib-tgt-irix.adb, 
        mlib-tgt-hpux.adb, mlib-tgt-linux.adb, mlib-tgt-solaris.adb, 
        mlib-tgt-vms-alpha.adb, mlib-tgt-vms-ia64.adb, mlib-tgt-mingw.adb, 
        mlib-tgt-vxworks.adb, mlib-tgt.adb (Build_Dynamic_Library): New
        parameter Options_2.

        * mlib-prj.ads, mlib-prj.adb (Build_Library): Call
        Build_Dynamic_Library with an empty Options_2.

        * mlib-utl.ads, mlib-utl.adb (Gcc): Parameter Options_2 has no
        default anymore.

        * makegpr.adb (Get_Imported_Directories.add): Remove trailing
        directory separator, if any.
        (Gprmake): Do not allow mains on the command line for library projects.
        Do not attempt to link when the project is a library project.
        (Library_Opts): New table to store Library_Options.
        (Build_Library): If Library_Options is specified, pass these options
        when building a shared library.

2004-10-04  Jose Ruiz  <ruiz@act-europe.fr>

        * s-tposen.adb (Service_Entry): The object must be always unlocked at
        the end of this procedure now that the unlock operation was inserted
        by the expander.

2004-10-04  Jose Ruiz  <ruiz@act-europe.fr>

        * targparm.ads, targparm.adb (Targparm_Tags): Add PAS value
        corresponding to the Preallocated_Stacks flags in System.
        (Get_Target_Parameters): Including the processing for
        Preallocated_Stacks.

        * system.ads, system-vxworks-x86.ads, system-darwin-ppc.ads, 
        system-vms_64.ads, system-unixware.ads, system-linux-ia64.ads, 
        system-freebsd-x86.ads, system-lynxos-ppc.ads, system-lynxos-x86.ads, 
        system-linux-x86_64.ads, system-tru64.ads, system-aix.ads, 
        system-vxworks-sparcv9.ads, system-vxworks-xscale.ads, 
        system-solaris-x86.ads, system-irix-o32.ads, system-irix-n32.ads, 
        system-hpux.ads, system-vxworks-m68k.ads, system-linux-x86.ads, 
        system-vxworks-mips.ads, system-os2.ads, system-interix.ads, 
        system-solaris-sparc.ads, system-solaris-sparcv9.ads, system-vms.ads, 
        system-mingw.ads, system-vms-zcx.ads, system-vxworks-ppc.ads, 
        system-vxworks-alpha.ads: Add the flag Preallocated_Stacks, that is
        used to signal whether the compiler creates the required stacks and
        descriptors for the different tasks (when True) or it is done by the
        underlying operating system at run time (when False).
        It is initially set to False in all targets.

        * exp_ch9.adb (Expand_N_Task_Type_Declaration): Create the task stack
        if it is supported by the target.
        (Make_Task_Create_Call): Pass the stack address if it has been
        previously created. Otherwise pass a Null_Address.

        * snames.adb: Add _stack.

        * snames.ads: Add Name_uStack. Required to allow the expander to
        statically allocated task stacks.

        * s-tarest.ads, s-tarest.adb (Create_Restricted_Task): Add
        Stack_Address argument.
        Check that its value is equal to Null_Address because this target does
        not support the static stack allocation.

2004-10-04  Thomas Quinot  <quinot@act-europe.fr>

        * usage.adb: Change "pragma inline" to "pragma Inline" in information
        and error messages

2004-10-04  Thomas Quinot  <quinot@act-europe.fr>

        * exp_dist.adb: Split declaration of asynchronous flag out of
        Add_RACW_Read_Attribute.
        Minor reformatting for better alignment with PolyORB version.
        Store the entity for the asynchronous flag of an RACW, rather than the
        expression, in the asynchronous flags table. This will allow this flag
        to be used in other subprograms beside Add_RACW_Read_Attribute.

2004-10-04  Thomas Quinot  <quinot@act-europe.fr>

        * g-socket.ads, g-socket.adb, g-socthi.adb, socket.c,
        g-soccon-aix.ads, g-soccon-irix.ads, g-soccon-hpux.ads, 
        g-soccon-interix.ads, g-soccon-solaris.ads, g-soccon-vms.adb, 
        g-soccon-mingw.ads, g-soccon-vxworks.ads, g-soccon-freebsd.ads, 
        g-soccon.ads, g-soccon-unixware.ads, g-soccon-tru64.ads:  Add new
        sockets constant MSG_NOSIGNAL (Linux-specific).
        Add new sockets constant MSG_Forced_Flags, list of flags to be set on
        all Send operations.
        For Linux, set MSG_NOSIGNAL on all send operations to prevent them
        from trigerring SIGPIPE.
        Rename components to avoid clash with Ada 2005 possible reserved
        word 'interface'.
        (Check_Selector): When the select system call returns with an error
        condition, propagate Socket_Error to the caller.

2004-10-01  Jan Hubicka  <jh@suse.cz>

        * misc.c (gnat_expand_body): Update call of tree_rest_of_compilation.

2004-09-23  Robert Dewar  <dewar@gnat.com>

        PR ada/17540

        * sem_prag.adb (Process_Import_Or_Interface): Don't set Is_Public here,
        instead do this at freeze time (we won't do it if there is an address
        clause).
        Change "pragma inline" to "pragma Inline" in information and error
        messages.
        Minor reformatting.

        * freeze.adb (Check_Address_Clause): Remove previous change, not the
        right way of doing things after all.
        (Freeze_Entity): For object, set Is_Public for imported entities
        unless there is an address clause present.

2004-09-21  Olivier Hainque  <hainque@act-europe.fr>

        * decl.c (gnat_to_gnu_entity) <E_General_Access_Type>: Check for a
        dummy designated type via TYPE_MODE instead of COMPLETE_TYPE_P. This
        ensures proper handling of types with rep clauses, which might have
        their TYPE_SIZE set already.

2004-09-21  Robert Dewar  <dewar@gnat.com>

        * decl.c (gnat_to_gnu_type, case E_Modular_Integer_Type): Wrap modular
        packed array types in both little- and big-endian cases. This change
        ensures that we no longer count on the unused bits being initialized
        for such types (and in particular ensures that equality testing will
        only read the relevant bits).
        Change name TYPE_LEFT_JUSTIFIED_MODULAR_P to TYPE_JUSTIFIED_MODULAR_P
        These changes mean that we no longer need to initialize small packed
        arrays.
        (gnat_to_gnu_entity) <E_Record_Subtype>: Apply the same
        optimization to an LJM field as to its parent field.

        * ada-tree.h, trans.c, utils.c, utils2.c:
        Change name TYPE_LEFT_JUSTIFIED_MODULAR_P to TYPE_JUSTIFIED_MODULAR_P

2004-09-20  Jan Hubicka  <jh@suse.cz>

        * utils.c (gnat_finalize): Remove.
        (end_subprog_body): Directly call cgraph_finalize_function;
        do not lower the nested functions.

2004-09-20  Robert Dewar  <dewar@gnat.com>

        PR ada/17540

        * freeze.adb (Check_Address_Clause): Reset Is_Imported and Is_Public
        if an address clause is present, since that means that the Import
        should be ignored.

2004-09-20  Arnaud Charlet  <charlet@act-europe.fr>

        * 5tsystem.ads: Removed, no longer used.

2004-09-17  Jeffrey D. Oldham  <oldham@codesourcery.com>
            Zack Weinberg  <zack@codesourcery.com>

        * ada-tree.def: Use tree_code_class enumeration constants
        instead of code letters.
        * ada-tree.h, decl.c, misc.c, trans.c, utils.c, utils2.c:
        Update for new tree-class enumeration constants.

2004-09-17  Vincent Celier  <celier@gnat.com>

        * prj-attr-pm.ads, prj-attr-pm.adb: New files, to split some private
        capabilities of the general project manager.

2004-09-09  Vincent Celier  <celier@gnat.com>

        * a-direct.ads: Add pragma Ada_05
        (Directory_Entry_Type): Give default value to component Kind to avoid
        not initialized warnings.

        * a-direct.adb (Current_Directory): Remove directory separator at the
        end.
        (Delete_Directory, Delete_Tree): Raise Name_Error if Directory is not
        an existing directory.
        (Fetch_Next_Entry): Give default value to variable Kind to avoid warning
        (Size (String)): Function C_Size returns Long_Integer, not File_Size.
        Convert the result to File_Size.

        * prj.ads: (Project_Error): New exception

        * prj-attr.adb: Except in procedure Initialize, Fail comes from
        Prj.Com, not from Osint.
        (Attrs, Package_Attributes): Tables moved to private part of spec
        (Add_Attribute, Add_Unknown_Package): Moved to new child package
        Prj.Attr.PM.
        (Register_New_Package (Name, Attributes), Register_New_Attribute): Raise
        Prj.Project_Error after call to Fail.
        (Register_New_Package (Name, Id)): Set Id to Empty_Package after calling
        Fail. Check that package name is not already in use.

        * prj-attr.ads: Comment updates to indicate that all subprograms may be
        used by tools, not only by the project manager, and to indicate that
        exception Prj.Prj_Error may be raised in case of problem.
        (Add_Unknown_Package, Add_Attribute): Moved to new child package
        Prj.Attr.PM.
        (Attrs, Package_Attributes): Table instantiations moved from the body to
        the private part to be accessible from Prj.Attr.PM body.

        * prj-dect.adb (Parse_Package_Declaration): Call Add_Unknown_Package
        from new package Prj.Attr.PM.
        (Parse_Attribute_Declaration): Call Add_Attribute from new package
        Prj.Attr.PM.

        * Makefile.in: Add prj-attr-pm.o to gnatmake object list

        * gnatbind.adb (Gnatbind): Correct warning message (Elaboration_Check
        instead of Elaboration_Checks).

        * a-calend.adb: Minor reformatting

2004-09-09  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * gigi.h (maybe_pad_type): New declaration.
        (create_subprog_type): New arg RETURNS_BY_TARGET_PTR.

        * ada-tree.h: (TYPE_RETURNS_BY_TARGET_PTR_P): New macro.

        * cuintp.c: Convert to use buildN.

        * decl.c (maybe_pad_type): No longer static.
        (gnat_to_gnu_entity, case E_Function): Handle case of returning by
        target pointer.
        Convert to use buildN.

        * trans.c (call_to_gnu): Add arg GNU_TARGET; support
        TYPE_RETURNS_BY_TARGET_PTR_P.  All callers changed.
        (gnat_to_gnu, case N_Assignment_Statement): Call call_to_gnu if call on
        RHS.
        (gnat_to_gnu, case N_Return): Handle TYPE_RETURN_BY_TARGET_PTR_P.
        (gnat_gimplify_expr, case ADDR_EXPR): New case.
        Convert to use buildN.

        * utils2.c (gnat_build_constructor): Also set TREE_INVARIANT and
        TREE_READONLY for const.
        Convert to use buildN.

        * utils.c (create_subprog_type): New operand RETURNS_BY_TARGET_PTR.
        (create_var_decl): Refine when TREE_STATIC is set.
        Convert to use buildN.

2004-09-09  Gary Dismukes  <dismukes@gnat.com>

        * gnat_ugn.texi: Delete text relating to checking of ali and object
        consistency.

        * a-except.adb (Rcheck_*): Add pragmas No_Return for each of these
        routines.

2004-09-09  Jose Ruiz  <ruiz@act-europe.fr>

        * gnat_ugn.texi: Add Detect_Blocking to the list of configuration
        pragmas recognized by GNAT.

        * gnat_rm.texi: Document pragma Detect_Blocking.

        * s-solita.adb (Timed_Delay_T): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation.

        * s-taprob.adb (Lock): When pragma Detect_Blocking is active increase
        the protected action nesting level.
        (Lock_Read_Only): When pragma Detect_Blocking is active increase the
        protected action nesting level.
        (Unlock): When pragma Detect_Blocking is active decrease the protected
        action nesting level.

        * s-taskin.adb (Initialize_ATCB): Initialize to 0 the
        Protected_Action_Nesting.

        * s-taskin.ads: Adding the field Protected_Action_Nesting to the
        Common_ATCB record. It contains the dynamic level of protected action
        nesting for each task. It is needed for checking whether potentially
        blocking operations are called from protected operations.
        (Detect_Blocking): Adding a Boolean constant reflecting whether pragma
        Detect_Blocking is active or not in the partition.

        * s-tasren.adb (Call_Simple): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation.
        (Task_Entry_Call): When pragma Detect_Blocking is active, raise
        Program_Error if called from a protected operation.
        (Timed_Task_Entry_Call): When pragma Detect_Blocking is active, raise
        Program_Error if called from a protected operation.

        * s-tassta.adb (Abort_Tasks): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation.

        * s-tpoben.adb (Lock_Entries): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation, and increase
        the protected action nesting level.
        (Lock_Read_Only_Entries): When pragma Detect_Blocking is active, raise
        Program_Error if called from a protected operation, and increase the
        protected action nesting level.
        (Unlock_Entries): When pragma Detect_Blocking is active decrease the
        protected action nesting level.

        * s-tposen.adb (Lock_Entry): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation, and increase
        the protected action nesting level.
        (Lock_Read_Only_Entry): When pragma Detect_Blocking is active, raise
        Program_Error if called from a protected operation, and increase the
        protected action nesting level.
        (Protected_Single_Entry_Call): When pragma Detect_Blocking is active,
        raise Program_Error if called from a protected operation.
        (Timed_Protected_Single_Entry_Call): When pragma Detect_Blocking is
        active, raise Program_Error if called from a protected operation.
        (Unlock_Entry): When pragma Detect_Blocking is active decrease the
        protected action nesting level.

        * sem_util.adb (Check_Potentially_Blocking_Operation): Remove the
        insertion of the statement raising Program_Error. The run time
        contains the required machinery for handling that.

        * sem_util.ads: Change comment associated to procedure
        Check_Potentially_Blocking_Operation.
        This procedure does not insert a call for raising the exception because
        that is currently done by the run time.

        * raise.h (__gnat_set_globals): Pass the detect_blocking parameter.

        * init.c: Add the global variable __gl_detect_blocking that indicates
        whether pragma Detect_Blocking is active (1) or not (0). Needed for
        making the pragma available at run time.
        (__gnat_set_globals): Pass and update the detect_blocking parameter.

        * lib-writ.adb (Write_ALI): Set the DB flag in the ali file if
        pragma Detect_Blocking is active.

        * lib-writ.ads: Document the Detect_Blocking flag (DB) in ali files.

        * ali.adb (Scan_ALI): Set the Detect_Blocking value to true if the flag
        DB is found in the ali file. Any unit compiled with pragma
        Detect_Blocking active forces its effect in the whole partition.

        * a-retide.adb (Delay_Until): Raise Program_Error if pragma
        Detect_Blocking is active and delay is called from a protected
        operation.

        * bindgen.adb (Gen_Adainit_Ada): When generating the call to
        __gnat_set_globals, pass 1 as Detect_Blocking parameter if pragma
        Detect_Blocking is active (0 otherwise).
        (Gen_Adainit_C): When generating the call to __gnat_set_globals, pass 1
        as Detect_Blocking parameter if pragma Detect_Blocking is active (0
        otherwise).

2004-09-09  Thomas Quinot  <quinot@act-europe.fr>

        * gnat_rm.texi: Rename GNAT.Perfect_Hash.Generators to
        GNAT.Perfect_Hash_Generators, and remove the empty GNAT.Perfect_Hash
        package.

        * s-parint.ads, s-parint.adb (Get_RAS_Info): New subprogram.
        (Register_Receiving_Stub): Add Subp_Info formal parameter.
        Update API in placeholder implemetation of s-parint to reflect changes
        in distribution runtime library.

        * sem_ch3.adb (Expand_Derived_Record): Rename to
        Expand_Record_Extension.

        * sem_disp.adb (Check_Controlling_Formals): Improve error message for
        primitive operations of potentially distributed object types that have
        non-controlling anonymous access formals.

        * sem_dist.ads, sem_dist.adb (Build_RAS_Primitive_Specification): New
        subprogram.
        New implementation of expansion for remote access-to-subprogram types,
        based on the RACW infrastructure.
        This version of sem_dist is compatible with PolyORB/DSA as well as
        GLADE.

        * sem_prag.adb (Analyze_Pragma, case Pragma_Asynchronous): For a pragma
        Asynchrronous that applies to a remote access-to-subprogram type, mark
        the underlying RACW type as asynchronous.

        * link.c: FreeBSD uses GNU ld: set __gnat_objlist_file_supported and
         __gnat_using_gnu_linker to 1.

        * Makefile.rtl, impunit.adb, g-perhas.ads, g-pehage.ads,
        g-pehage.adb: Rename GNAT.Perfect_Hash.Generators to
        GNAT.Perfect_Hash_Generators, and remove the empty
        GNAT.Perfect_Hash package.

        * atree.adb: Minor reformatting

        * exp_ch3.adb (Expand_Derived_Record): Rename to
        Expand_Record_Extension.
        (Build_Record_Init_Proc.Build_Assignment): The default expression in
        a component declaration must remain attached at that point in the
        tree so New_Copy_Tree copies it if the enclosing record type is derived.
        It is therefore necessary to take a copy of the expression when building
        the corresponding assignment statement in the init proc.
        As a side effect, in the case of a derived record type, we now see the
        original expression, without any rewriting that could have occurred
        during expansion of the ancestor type's init proc, and we do not need
        to go back to Original_Node.

        * exp_ch3.ads (Expand_Derived_Record): Rename to
        Expand_Record_Extension.

        * exp_dist.ads, exp_dist.adb (Underlying_RACW_Type): New subprogram.
        Returns the RACW type used to implement a remote access-to-subprogram
        type.
        (Add_RAS_Proxy_And_Analyze, Build_Remote_Subprogram_Proxy_Type):
        New subprograms. Used to create a proxy tagged object for a remote
        subprogram. The proxy object is used as the designated object
        for RAS values on the same partition (unless All_Calls_Remote applies).
        (Build_Get_Unique_RP_Call): New subprogram. Build a call to
        System.Partition_Interface.Get_Unique_Remote_Pointer.
        (Add_RAS_Access_TSS, Add_RAS_Dereference_TSS):
        Renamed from Add_RAS_*_Attribute.
        (Add_Receiving_Stubs_To_Declarations): Generate a table of local
        subprograms.
        New implementation of expansion for remote access-to-subprogram types,
        based on the RACW infrastructure.

        * exp_dist.ads (Copy_Specification): Update comment to note that this
        function can copy the specification from either a subprogram
        specification or an access-to-subprogram type definition.

2004-09-09  Ed Schonberg  <schonberg@gnat.com>

        * sem_type.adb (Disambiguate): Handle properly an accidental ambiguity
        in an instance, between an explicit subprogram an one inherited from a
        type derived from an actual.

        * exp_ch6.adb (Expand_N_Subprogram_Body): If polling is enabled, do not
        add a polling call if the subprogram is to be inlined by the back-end,
        to avoid repeated calls with multiple inlinings.

        * checks.adb (Apply_Alignment_Check): If the expression in the address
        clause is a call whose name is not a static entity (e.g. a dispatching
        call), treat as dynamic.

2004-09-09  Robert Dewar  <dewar@gnat.com>

        * g-trasym.ads: Minor reformatting

        * exp_ch3.adb (Component_Needs_Simple_Initialization): Don't except
        packed arrays, since unused bits are expected to be zero for a
        comparison.

2004-09-09  Eric Botcazou  <ebotcazou@act-europe.fr>

        * exp_pakd.ads: Fix an inacurracy and a couple of typos in the head
        comment.

2004-09-09  Pascal Obry  <obry@gnat.com>

        * mdll.ads, mdll.adb (Build_Dynamic_Library): New parameter Map_File to
        enable map file generation. Add the right option to generate the map
        file if Map_File is set to True.

        * gnatdll.adb (Gen_Map_File): New variable.
        (Syntax): Add info about new -m (Map_File) option.
        (Parse_Command_Line): Add support for -m option.
        (gnatdll): Pass Gen_Map_File to Build_Dynamic_Library calls.
        Minor reformatting.

2004-09-09  Laurent Pautet  <pautet@act-europe.fr>

        * gnatls.adb: Add a very verbose mode -V. Such mode is required by the
        new gnatdist implementation.
        Define a subpackage isolating the output routines specific to this
        verbose mode.

2004-09-09  Joel Brobecker  <brobecker@gnat.com>

        * Makefile.rtl: (GNATRTL_NONTASKING_OBJS): Add g-dynhta.

        * gnat_ugn.texi (Main Subprograms): Fix typo. Deduced, not deducted.

2004-09-09  Cyrille Comar  <comar@act-europe.fr>

        * opt.adb (Set_Opt_Config_Switches): Use Ada_Version_Runtime to compile
        internal unit.

        * opt.ads: Add Ada_Version_Runtime constant used to decide which
        version of the language is used to compile the run time.

2004-09-09  Arnaud Charlet  <charlet@act-europe.fr>

        * sem_util.adb (Requires_Transient_Scope): Re-enable handling
        of variable length temporaries for function return now that the
        back-end and gigi support it.

2004-09-01  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * misc.c (gnat_print_type): Use TYPE_RM_SIZE_NUM.

        * trans.c (struct stmt_group): Delete field GLOBAL.
        (gnat_init_stmt_group): Do not initialize it.
        (call_to_gnu): Use save_expr, not protect_multiple_eval.
        (Exception_Handler_to_gnu_sjlj): Call build_int_cst, not build_int_2
        (gnat_to_gnu, case N_Character_Literal, N_String_Literal): Likewise.
        (gnat_to_gnu, case N_Compilation_Unit): Do not set GLOBAL in stmt group.
        (start_stmt_group): Likewise.
        (add_stmt, add_decl_expr): Rework handling of global DECL_EXPRs.

        * utils2.c (ggc.h): Include.
        (build_call_raise): Call build_int_cst, not build_int_2.

        * utils.c (gnat_init_decl_processing): Fix arg to
        build_common_tree_nodes.
        (create_subprog_type): Do not use SET_TYPE_CI_CO_LIST.
        (gnat_define_builtin): Set built_in_decls.
        (init_gigi_decls): Call build_int_cst, not build_int_2.

        * ada-tree.h (struct lang_decl, struct lang_type): Field is type tree.
        (GET_TYPE_LANG_SPECIFIC, SET_TYPE_LANG_SPECIFIC): New macros.
        (GET_DECL_LANG_SPECIFIC, SET_DECL_LANG_SPECIFIC): Likewise.
        (TYPE_CI_CO_LIST, SET_TYPE_CI_CO_LIST, TYPE_MODULE,
        SET_TYPE_MODULE): Use them.
        (TYPE_INDEX_TYPE, SET_TYPE_INDEX_TYPE, TYPE_DIGITS_VALUE): Likewise.
        (SET_TYPE_DIGITS_VALUE, TYPE_UNCONSTRAINED_ARRAY): Likewise.
        (SET_TYPE_UNCONSTRAINED_ARRAY, TYPE_ADA_SIZE,
        SET_TYPE_ADA_SIZE): Likewise.
        (TYPE_ACTUAL_BOUNDS, SET_TYPE_ACTUAL_BOUNDS): Likewise.
        (DECL_CONST_CORRESPONDING_VAR,
        SET_DECL_CONST_CORRESPONDING_VAR): Likewise.
        (DECL_ORIGINAL_FIELD, SET_DECL_ORIGINAL_FIELD): Likewise.
        (TYPE_RM_SIZE_INT, TYPE_RM_SIZE_ENUM, SET_TYPE_RM_SIZE_ENUM): Deleted.
        (TYPE_RM_SIZE_NUM): New macro.
        (TYPE_RM_SIZE): Modified to use above.

        * cuintp.c: (build_cst_from_int): New function.
        (UI_To_gnu): Use it.

        * decl.c (gnat_to_gnu_entity): Use TYPE_RM_SIZE_NUM.
        (make_type_from_size): Avoid changing TYPE_UNSIGNED of a type.
        (gnat_substitute_in_type, case ARRAY_TYPE): If old had a
        MIN_EXPR for the size, copy it into new.

2004-09-01  Robert Dewar  <dewar@gnat.com>

        * exp_ch6.adb (Expand_Call): Properly handle validity checks for
        packed indexed component where array is an IN OUT formal. This
        generated garbage code previously.

        * gnat_ugn.texi: Document -fverbose-asm

        * gnat-style.texi: Minor updates (note that boolean constants and
        variables are joined with AND/OR rather than short circuit forms).

2004-09-01  Ed Schonberg  <schonberg@gnat.com>

        * exp_util.adb (Safe_Unchecked_Type_Conversion): Conversion is safe if
        it is an upward conversion of an untagged type with no representation
        change.

2004-09-01  Thomas Quinot  <quinot@act-europe.fr>

        * rtsfind.ads: Move RCI_Subp_Info and RCI_Subp_Info_Array to
        System.Partition_Interface.

        * checks.adb (Apply_Access_Checks): Do not generate checks when
        expander is not active (but check for unset reference to prefix of
        dereference).

        * sem_prag.adb (Analyze_Pragma, case Pragma_Debug): Uniformly rewrite
        pragma Debug as an if statement with a constant condition, for
        consistent treatment of entity references contained within the
        enclosed procedure call.

2004-09-01  Vincent Celier  <celier@gnat.com>

        * bindgen.adb: (Set_EA_Last): New procedure
        (Gen_Exception_Table_Ada, Gen_Exception_Table_C): Use new procedure
        Set_EA_Last.
        (Gen_Adafinal_Ada): If no finalization, adafinal does nothing
        (Gen_Output_File_Ada): Always call Gen_Adafinal_Ada, so that SAL can be
        linked without errors.
        (Gen_Exception_Table_Ada): Correct bugs when generating code for arrays
        ST and EA.
        (Gen_Exception_Table_C): Correct same bugs

        * vms_data.ads: Add new qualifier /VERBOSE_ASM to GCC_Switches

        * g-os_lib.adb (Normalize_Pathname.Get_Directory): When Dir is empty,
        on Windows, make sure that the drive letter is in upper case.

        * g-os_lib.ads (Normalize_Pathname): Add a comment to indicate that on
        Windows, when the drive letter is added and Case_Sensitive is True, the
        drive letter is forced to upper case.

        * mlib-tgt-irix.adb (Build_Dynamic_Library): Transfer all -lxxx options
        to Options_2 for the call to MLib.Utl.Gcc.

        * bld.adb (Put_Include_Project): Use '/', not '\' on Windows as
        directory separator when defining BASE_DIR.

2004-09-01  Pascal Obry  <obry@gnat.com>

        * gprcmd.adb (Extend): Do not output trailing directory separator. This
        is not needed and it confuses Windows GNU/make which does not report
        directory terminated by a slash as a directory.
        (gprcmd): Idem for "pwd" internal command.

        * Makefile.generic: Use __GPRCOLON__ instead of pipe character in
        target names rewrite to fix regressions with recent version of
        GNU/make. Starting with GNU/make 3.80 the pipe character was not
        handled properly anymore.

2004-09-01  Andreas Schwab  <schwab@suse.de>

        * Make-lang.in (EXTRA_GNATBIND_OBJS): Revert last change.
        * raise.c [!IN_RTS]: Undef abort.

2004-08-27  Nathan Sidwell  <nathan@codesourcery.com>

        * utils2.c (build_allocator): Use ssize_int.

        * utils.c (gnat_init_decl_processing): Ada has a signed sizetype.

2004-08-27  Andreas Schwab  <schwab@suse.de>

        * Make-lang.in (EXTRA_GNATBIND_OBJS): Add errors.o.

2004-08-25  Nathan Sidwell  <nathan@codesourcery.com>
            Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * ada-tree.h (TYPE_RM_SIZE_INT): Use TYPE_LANG_SLOT_1.

2004-08-25  Nathan Sidwell  <nathan@codesourcery.com>

        * cuintp.c (UI_To_gnu): Adjust build_int_cst calls.
        * trans.c (Exception_Handler_to_gnu_sjlj, gnat_to_gnu): Likewise.
        * utils.c (init_gigi_decls): Likewise.
        * utils2.c (build_call_raise, build_allocator): Likewise.

2004-08-24  Nathan Sidwell  <nathan@codesourcery.com>

        * utils.c (gnat_init_decl_processing): Adjust
        build_common_tree_nodes call.

2004-08-20  Nathan Sidwell  <nathan@codesourcery.com>

        * utils2.c (build_allocator): Use build_int_cst for negative
        size types.

2004-08-18  Richard Henderson  <rth@redhat.com>

        * misc.c (LANG_HOOKS_HONOR_READONLY): Remove.

2004-08-16  Nathan Sidwell  <nathan@codesourcery.com>

        * cuintp.c (UI_To_gnu): Be more conservative with build_int_cst
        call.s
        * trans.c (Exception_Handler_to_gnu_sjlj): Likewise.
        (gnat_to_gnu): Likewise.

2004-08-16  Pascal Obry  <obry@gnat.com>

        * adaint.c (__gnat_prj_add_obj_files): Set to 0 only on Win32 for GCC
        backend prior to GCC 3.4. With GCC 3.4 we are using the GCC's shared
        option and not mdll anymore. Update comment.

2004-08-16  Pascal Obry  <obry@gnat.com>

        * bld.adb (Put_Include_Project): Properly handle directory separators
        on Windows.

2004-08-16  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch4.adb (Try_Object_Operation): Restructure code. Optimize by
        decreasing the number of allocated junk nodes while searching for the
        appropriate subprogram.

2004-08-15  Nathan Sidwell  <nathan@codesourcery.com>

        * cuintp.c (UI_To_gnu): Use build_int_cst..
        * trans.c (Exception_Handler_to_gnu_sjlj, gnat_to_gnu): Likewise.
        * utils.c (init_gigi_decls): Likewise.
        * utils2.c (build_call_raise): Likewise.

2004-08-13  Olivier Hainque  <hainque@act-europe.fr>

        * decl.c (gnat_to_gnu_entity) <E_Variable>: When building an allocator
        for a global aliased object with a variable size and an unconstrained
        nominal subtype, pretend there is no initializer if the one we have is
        incomplete, and avoid referencing an inexistant component in there. The
        part we have will be rebuilt anyway and the reference may confuse
        further operations.

2004-08-13  Thomas Quinot  <quinot@act-europe.fr>

        * einfo.ads: Minor reformatting

        * lib-writ.adb (Output_Main_Program_Line): Do not set parameter
        restrictions in the ALI if we only want to warn about violations.

2004-08-13  Vincent Celier  <celier@gnat.com>

        * ali.adb (Scan_ALI): Initialize component Body_Needed_For_SAL to False
        when creating a new Unit_Record in table Units.

        * gnatls.adb (Output_Unit): In verbose mode, output the restrictions
        that are violated, if any.

        * prj-nmsc.adb (Ada_Check.Get_Path_Names_And_Record_Sources): Do not
        add directory separator if path already ends with a directory separator.

2004-08-13  Ed Schonberg  <schonberg@gnat.com>

        * rtsfind.adb (Entity_Not_Defined): If the error ocurrs in a predefined
        unit, this is an attempt to inline a construct that is not available in
        the current restricted mode, so abort rather than trying to continue.

        * sem_ch3.adb (Build_Underlying_Full_View): If the new type has
        discriminants that rename those of the parent, recover names of
        original discriminants for the constraint on the full view of the
        parent.
        (Complete_Private_Subtype): Do not create a subtype declaration if the
        subtype is an itype.

        * gnat_rm.texi: Added section on implementation of discriminated
        records with default values for discriminants.

2004-08-13  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15601
        * sem_res.adb (Make_Call_Into_Operator): Handle properly the case where
        the second operand is overloaded.

2004-08-10  Richard Henderson  <rth@redhat.com>

        * utils.c (gnat_install_builtins): Remove __builtin_stack_alloc,
        add __builtin_alloca.

2004-08-10  Richard Henderson  <rth@redhat.com>

        * config-lang.in (boot_language): Yes.

2004-08-09  Thomas Quinot  <quinot@act-europe.fr>

        * g-socket.adb (Abort_Selector): Initialize Buf to prevent valgrind
        from complaining on potential uninitialized reference.
        Change calls to GNAT.Sockets.Thin.Is_Socket_In_Set to account for
        new specification and test explicitly for non-zero return value.

        * g-socthi.ads (Is_Socket_In_Set): Declare imported function as
        returning C.int, to avoid using a derived boolean type.

        * exp_ch5.adb (Make_Tag_Ctrl_Assignments): Use
        Duplicate_Subexpr_No_Checks in preference to direct use of
        Remove_Side_Effects and New_Copy_Tree.
        Clear Comes_From_Source on prefix of 'Size attribute reference.

        * g-socthi.adb, g-socthi-vms.adb, g-socthi-mingw.adb,
        g-socthi-vxworks.adb: Change calls to
        GNAT.Sockets.Thin.Is_Socket_In_Set to account for new specification
        and test explicitly for non-zero return value.

        * g-socthi-vms.ads, g-socthi-mingw.ads, g-socthi-vxworks.ads:
        (Is_Socket_In_Set): Declare imported function as returning C.int, to
        avoid using a derived boolean type.

2004-08-09  Albert Lee  <lee@gnat.com>

        * system-irix-n32.ads: Refine tasking priority constants for IRIX.

2004-08-09  Pascal Obry  <obry@gnat.com>

        * gnat_ugn.texi: Document new way to build DLLs on Windows using
        GCC's -shared option.

        * mlib-tgt-mingw.adb (Build_Dynamic_Library): Pass GCC's options into
        Options_2 parameter (options put after object files).

2004-08-09  Olivier Hainque  <hainque@act-europe.fr>

        * decl.c (gnat_to_gnu_entity) <E_Array_Subtype>: Adjust condition to
        ignore overflows on low and high bounds of an index to also account for
        differences in signedness between sizetype and gnu_index_subtype.
        These are as legitimate as the ones caused by a lower TYPE_PRECISION
        on sizetype.

2004-08-09  Robert Dewar  <dewar@gnat.com>

        * s-solita.ads, s-solita.adb: Minor reformatting

        * gnat_rm.texi: Add documentation for pragma Profile (Restricted)
        Move pragma Restricted_Run_Time, No_Run_Time, Ravenscar to new
        obsolescent section
        Add note that No_Implicit_Conditionals does not suppress
        run time constraint checks.

        * vms_conv.ads: Minor reformatting

        * s-secsta.adb: Use SS_Ptr instead of Mark_Id as stack pointer (cleanup
        and necessary for following change).
        (Mark): Return new format Mark_Id containing sec stack address
        (Release): Use sec stack address from Mark_Id avoiding Self call

        * s-secsta.ads: Define SS_Ptr to be used instead of Mark_Id as stack
        pointer (cleanup and necessary for following change).
        Define Mark_Id as record containing address of secondary stack, that way
        Release does not need to find the stack again, decreasing the number of
        calls to Self and improving efficiency.

        * sem_util.ads: Add a ??? comment for Is_Local_Variable_Reference

        * sem_ch5.adb (Analyze_Case_Statement): Add circuitry to track value of
        case variable into the individual case branches when possible.

        * sem_ch11.adb: Minor reformatting

        * prj.ads: Correct spelling of suffixs

        * prj-nmsc.adb: Minor reformatting
        Correct spelling suffixs throughout (also in identifiers)

        * freeze.adb: Minor spelling correction

        * exp_ch2.adb: Cleanups to handling of Current_Value
        (no functional effect).

        * bld.adb: Correct spelling of suffixs

        * einfo.adb (Enclosing_Dynamic_Scope): Defend against junk argument

2004-08-09  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15408

        * sem_ch7.adb (Install_Private_Declarations): In the body of the
        package or of a child, private entities are both immediately_visible
        and not hidden.

2004-08-09  Ed Schonberg  <schonberg@gnat.com>

        * sem_eval.adb (Eval_Integer_Literal): If the context is Any_Integer,
        there are no range checks on the value of the literal.

        * exp_ch7.adb (Insert_Actions_In_Scope_Around): If the node being
        wrapped is the triggering alternative of an asynchronous select, action
        statements mustbe inserted before the select itself.

        * sem_attr.adb (Analyze_Attribute, case 'Size): Handle properly the
        case where the prefix is a protected function call.
        (Resolve_Attribute, case 'Access): The attribute reference on a
        subprogram is legal in a generic body if the subprogram is declared
        elsewhere.

2004-08-09  Vincent Celier  <celier@gnat.com>

        * makegpr.adb (Build_Library): Link with g++ if C++ is one of the
        languages, otherwise building the library may fail with unresolved
        symbols.
        (Compile_Sources): Do not build libraries if -c switch is used

        * gnatlink.adb (Process_Args): New switches -M and -Mmap
        (Write_Usage): If map file creation is supported, output new switches
        -M and -Mmap.
        (Gnatlink): When -M is specified, add the necessary switch(es) to the
        gcc call, when supported.

        * Makefile.in: Added indepsw.o to the object list for gnatlink
        Specified the AIX, GNU/Linux and Windows versions of indepsw.adb

        * indepsw-aix.adb, indepsw-linux.adb, indepsw-mingw.adb,
        indepsw.adb, indepsw.ads: New files.

2004-08-09  Bernard Banner  <banner@gnat.com>

        * system-vxworks-x86.ads, s-vxwork-x86.ads: New files.

        * Makefile.in: add section for vxworks x86

2004-08-09  Hristian Kirtchev  <kirtchev@gnat.com>

        * exp_ch3.adb (Build_Init_Statements): Add extra condition to deal with
        per-object constrained components where the discriminant is of an
        Access type.
        (Build_Record_Init_Proc): Add condition to prevent the inheritance of
        the parent initialization procedure for derived Unchecked_Unions.
        Instead, derived Unchecked_Unions build their own initialization
        procedure.
        (Build_Variant_Record_Equality): Implement Unchecked_Union equality.
        Check the body of the subprogram for details.
        (Freeze_Record_Type): Prevent the inheritance of discriminant checking
        functions for derived Unchecked_Union types by introducing a condition.
        Allow the creation of TSS equality functions for Unchecked_Unions.
        (Make_Eq_Case): Rename formal parameter Node to E in function signature.
        Add formal parameter Discr to function signature. Discr is used to
        control the generated case statement for Unchecked_Union types.
        (Make_Eq_If): Rename formal parameter Node to E in function signature.

        * exp_ch4.adb (Build_Equality_Call): Implement equality calls for
        Unchecked_Unions.
        Check the body of the subprogram for details.
        (Expand_Composite_Equality): Augment composite type equality to include
        correct handling of Unchecked_Union components.
        (Expand_N_In): Add condition to detect illegal membership tests when the
        subtype mark is a constrained Unchecked_Union and the expression lacks
        inferable discriminants, and build a Raise_Program_Error node.
        (Expand_N_Op_Eq): Add function Has_Unconstrained_UU_Component. Used
        to detect types that contain components of unconstrained Unchecked_Union
        subtype. Add condition to detect equality between types that have an
        unconstrained Unchecked_Union component, and build a Raise_Program_Error
        node. Add condition to detect equality between Unchecked_Union types
        that lack inferable discriminants, and build a Raise_Program_Error node.
        Otherwise build a TSS equality function call.
        (Expand_N_Type_Conversion): Add condition to detect illegal conversions
        from a derived Unchecked_Union to an unconstrained non-Unchecked_Union
        with the operand lacking inferable discriminants, and build a Raise_
        Program_Error node.
        (Expand_Record_Equality): Remove guard that prevents Unchecked_Union
        composite equality.
        (Has_Inferable_Discriminants): Implement new predicate for objects and
        expressions of Unchecked_Union type. Check the body of subprogram for
        details.
        (Has_Unconstrained_UU_Components): Add function
        Component_Is_Unconstrained_UU. It is used to detect whether a single
        component is of an unconstrained Unchecked_Union subtype. Add function
        Variant_Is_Unconstrained_UU. It is used to detect whether a single
        component inside a variant is of an unconstrained Unchecked_Union type.

        * exp_ch5.adb (Expand_Assign_Record): Add condition to copy the
        inferred discriminant values. Add condition to generate a case
        statement with an inferred discriminant as the switch.
        (Make_Component_List_Assign): Introduce a Boolean flag that determines
        the behaviour of the subprogram in the presence of an Unchecked_Union.
        Add condition to trigger the usage of the inferred discriminant value
        as the generated case statement switch.
        (Make_Field_Assign): Introduce a Boolean flag that determines the
        behaviour of the subprogram in the presence of an Unchecked_Union. Add
        condition to trigger the usage of the inferred discriminant value as
        the right-hand side of the generated assignment.

        * exp_ch6.adb (Expand_Call): Add condition to skip extra actual
        parameter generation when dealing with Unchecked_Unions.

        * checks.adb (Apply_Discriminant_Check): Do not apply discriminant
        checks for Unchecked_Unions.

        * einfo.ads: Update comment on usage of flag Has_Per_Object_Constraint

        * exp_attr.adb (Expand_N_Attribute_Reference): Produce
        Raise_Program_Error nodes for the execution of Read and Write
        attributes of Unchecked_Union types and the execution of Input and
        Output attributes of Unchecked_Union types that lack default
        discriminant values.

        * sem_prag.adb (Analyze_Pragma): Remodel the analysis of pragma
        Unchecked_Union. Add procedure Check_Component. It is used to inspect
        per-object constrained components of Unchecked_Unions for being
        Unchecked_Unions themselves. Add procedure Check_Variant. It is used to
        check individual components withing a variant.

        * sem_res.adb (Resolve_Comparison_Op): Remove guard that prevents
        comparison of Unchecked_Unions.
        (Resolve_Equality_OP): Remove guard that prevents equality between
        Unchecked_Unions.

        * sem_util.adb (Build_Component_Subtype): Add guard to prevent creation
        of component subtypes for Unchecked_Union components.
        (Get_Actual_Subtype): Add condition that returs the Unchecked_Union type
        since it is the actual subtype.

        * sem_ch12.adb (Instantiate_Type): Add condition to detect the correct
        pass of Unchecked_Union subtypes as generic actuals to formal types
        that lack known_discriminant_parts or that are derived Unchecked_Union
        types, and do nothing. In any other case, produce an error message.

        * sem_ch3.adb (Analyze_Component_Declaration): Add function
        Contains_POC. It determines whether a constraint uses the discriminant
        of an enclosing record type.
        Add condition to detect per-object constrained component and set the
        appropriate flag.
        (Derived_Type_Declaration): Remove guard that prevents derivation from
        Unchecked_Union types.
        (Process_Subtype): Remove quard that prevents the creation of Unchecked_
        Union subtypes.

        * sem_ch4.adb (Analyze_Selected_Component): Correct the detection of
        references to Unchecked_Union discriminants.

        * sem_ch6.adb (Create_Extra_Formals): Add condition to skip extra
        formal generation when dealing with Unchecked_Unions.
        (Set_Actual_Subtypes): Add condition to prevent generation of actual
        subtypes for Unchecked_Unions.

        * sem_ch7.adb (Analyze_Package_Specification): Add procedure
        Inspect_Unchecked_Union_Completion. It is used to detect incorrect
        completions of discriminated partial views by Unchecked_Unions and
        produce an error message.

2004-08-09  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * trans.c (struct stmt_group): New field, GLOBAL.
        (global_stmt_group, gnu_elab_proc_decl, build_unit_elab): Deleted.
        (struct elab_info): New struct.
        (elab_info_list, gnu_elab_proc_stack): New variables.
        (Compilation_Unit_to_gnu): New procedure.
        (gigi): Call it and also handle elaboration procs we've saved.
        (gnat_init_stmt_group): Don't set global_stmt_group; instead initialize
        global field from parent.
        (gnat_to_gnu): Get decl from gnu_elab_proc_stack.
        (gnat_to_gnu, case N_Compilation_Unit): Call Compilation_Unit_to_gnu.
        (start_stmt_group): Initialize global field from parent.
        (add_decl_expr): Set to global for current statement group.
        (gnat_gimplify_expr, case NULL_EXPR): Add operand 0 to pre list, not
        post.

        * utils.c (global_bindings_p): True when no current_function_decl; no
        longer check current_binding_level.

2004-08-09  Ben Brosgol  <brosgol@gnat.com>

        * xgnatugn.adb: Added logic to deal with @ifset/@ifclear for edition
        choice.

        * gnat_rm.texi, gnat_ugn.texi: Added edition conditionalization logic.

2004-08-06  Andreas Schwab  <schwab@suse.de>

        * utils.c (gnat_define_builtin): Remove second parameter of
        make_decl_rtl.
        (begin_subprog_body): Likewise.

2004-07-26  Arnaud Charlet  <charlet@act-europe.fr>

        * sem_util.adb (Requires_Transient_Scope): Temporarily disable
        optimization, not supported by the tree-ssa back-end.

2004-07-26  Olivier Hainque  <hainque@act-europe.fr>

        * s-mastop-irix.adb: Update comments.

        * a-except.adb (Exception_Information): Raise Constraint_Error if
        exception Id is Null_Id.
        This is required behavior, which is more reliably and clearly checked
        at the top level interface level.

2004-07-26  Javier Miranda  <miranda@gnat.com>

        * exp_aggr.adb (Build_Array_Aggr_Code): Do not build the initialization
        call if a component has no default_expression and the box is used.

        * sem_aggr.adb (Resolve_Array_Aggregate): If a component has no
        default_expression and you use box, it behaves as if you had declared a
        stand-alone object.
        (Resolve_Record_Aggregate): If a component has no default_expression and
        you use box, it behaves as if you had declared a stand-alone object.

        * sem_ch10.adb (Install_Siblings): Do not make visible the private
        entities of private-with siblings.

2004-07-26  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch3.adb (Build_Underlying_Full_View): If this is the full view
        for a component of an itype, set the parent pointer for analysis,
        there is no list in which to insert it.

        * sem_res.adb (Resolve): Call Rewrite_Renamed_Operator only for
        bona-fide renamings, not for inherited operations.

        * exp_ch4.adb (Expand_Allocator_Expression): If the allocator is an
        actual for a formal that is an access parameter, create local
        finalization list even if the expression is not an aggregate.

2004-07-26  Ed Schonberg  <schonberg@gnat.com>

        PR ada/16213
        * sem_ch8.adb (Attribute_Renaming, Check_Library_Level_Renaming):
        Diagnose properly illegal subprogram renamings that are library units.

2004-07-26  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15588
        * sem_util.adb (Is_OK_Variable_For_Out_Formal): If actual is a type
        conversion rewritten as an unchecked conversion, check that original
        expression is a variable.

        * exp_ch4.adb (Expand_N_Type_Conversion): If rewriting as an
        unchecked_conversion, create new node rather than rewriting in place,
        to preserve original construct.

2004-07-26  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * gigi.h (gnat_expand_body): Deleted.

        * Make-lang.in: (trans.o): Depends on function.h.

        * misc.c: (gnat_expand_body): Moved to here.

        * trans.c (gnat_expand_body_1): Deleted.
        (gnat_expand_body): Moved from here.
        (gnat_to_gnu): N_Implicit_Label_Declaration forces being in elab proc.
        (add_stmt): Check for marked visited with global_bindings_p.
        (gnat_gimplify_expr, case COMPONENT_REF): New case.
        (gnat_gimplify_expr, case NULL_EXPR): Set TREE_NO_WARNING for temp.

        * utils2.c (build_binary_op, case MODIFY_EXPR): Put LHS in a
        VIEW_CONVERT_EXPR if not operation type.

        * utils.c (update_pointer_to): Set DECL_ORIGINAL_FIELD for
        fat pointer.

        * decl.c, cuintp.c, gigi.h, misc.c, trans.c, utils.c, utils2.c: Minor
        changes: reformatting of negation operators, removing unneeded
        inequality comparison with zero, converting equality comparisons with
        zero to negations, changing int/0/1 to bool/false/true, replace calls
        to gigi_abort with abort, and various other similar changes.

2004-07-26  Vincent Celier  <celier@gnat.com>

        * gnatcmd.adb (GNATCmd): Add processing for new built-in command
        "setup".

        * make.adb (Gnatmake): Fail when a library is not present and there is
        no object directory.

        * mlib-prj.adb (Check_Library): No need to check if the library needs
        to be rebuilt if there is no object directory, hence no object files
        to build the library.

        * opt.ads (Setup_Projects): New Boolean flag.

        * prj-nmsc.adb (Locate_Directory): New parameter Project, Kind and
        Location.
        Create directory when Kind /= "" and in "gnat setup". Report error if
        directory cannot be created.
        (Ada_Check): Create library interface copy dir if it does not exist
        and we are in "gnat setup".
        (Find_Sources): No error if in "gnat setup" and no Ada sources were
        found.
        (Language_Independent_Check): Create object directory, exec directory
        and/or library directory if they do not exist and we are in
        "gnat setup".

        * vms_conv.ads: (Command_Type): New command Setup.

        * vms_conv.adb (Initialize): Add Setup component of Cammand_List.

        * vms_data.ads: Add qualifiers/switches for new built-in command
        "setup".

2004-07-25  Richard Henderson  <rth@redhat.com>

        * utils.c (create_subprog_decl): Set DECL_ARTIFICIAL and
        DECL_IGNORED_P on RESULT_DECL.

2004-07-20  Olivier Hainque  <hainque@act-europe.fr>

        * a-elchha.adb (Last_Chance_Handler): Remove the bogus buffer dynamic
        allocation and potentially overflowing update with
        Tailored_Exception_Information. Use the sec-stack free procedural
        interface to output Exception_Information instead.

        * a-except.adb (To_Stderr): New subprogram for character, and string
        version moved from a-exextr to be visible from other separate units.
        (Tailored_Exception_Information): Remove the procedural version,
        previously used by the default Last_Chance_Handler and not any more.
        Adjust various comments.

        * a-exexda.adb: Generalize the exception information procedural
        interface, to minimize the use of secondary stack and the need for
        local buffers when the info is to be output to stderr:
        (Address_Image): Removed.
        (Append_Info_Character): New subprogram, checking for overflows and
        outputing to stderr if buffer to fill is of length 0.
        (Append_Info_String): Output to stderr if buffer to fill is of length 0.
        (Append_Info_Address, Append_Info_Exception_Name,
        Append_Info_Exception_Message, Append_Info_Basic_Exception_Information,
        Append_Info_Basic_Exception_Traceback,
        Append_Info_Exception_Information): New subprograms.
        (Append_Info_Nat, Append_Info_NL): Use Append_Info_Character.
        (Basic_Exception_Info_Maxlength, Basic_Exception_Tback_Maxlength,
        Exception_Info_Maxlength, Exception_Name_Length,
        Exception_Message_Length): New subprograms.
        (Exception_Information): Use Append_Info_Exception_Information.
        (Tailored_Exception_Information): Use
        Append_Info_Basic_Exception_Information.
        Export services for the default Last_Chance_Handler.

        * a-exextr.adb (To_Stderr): Remove. Now in a-except to be usable by
        other separate units.

2004-07-20  Vincent Celier  <celier@gnat.com>

        * clean.adb, mlib-utl.adb, osint.adb, makegpr.adb: Minor reformatting.

2004-07-20  Ed Schonberg  <schonberg@gnat.com>

        * freeze.adb (Freeze_Entity): If entity is a discriminated record type,
        emit itype references for the designated types of component types that
        are declared outside of the full record declaration, and that may
        denote a partial view of that record type.

2004-07-20  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15607
        * sem_ch3.adb (Build_Discriminated_Subtype): Do not attach a subtype
        which is the designated type in an access component declaration, to the
        list of incomplete dependents of the parent type, to avoid elaboration
        issues with out-of-scope subtypes.
        (Complete_Private_Subtype): Recompute Has_Unknown_Discriminants from the
        full view of the parent.

2004-07-20  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15610
        * sem_ch8.adb (Find_Expanded_Name): If name is overloaded, reject
        entities that are hidden, such as references to generic actuals
        outside an instance.

2004-07-20  Javier Miranda  <miranda@gnat.com>

        * sem_ch4.adb (Try_Object_Operation): New subprogram that gives
        support to the new notation.
        (Analyze_Selected_Component): Add call to Try_Object_Operation.

2004-07-20  Jose Ruiz  <ruiz@act-europe.fr>

        * s-taprob.adb: Adding the elaboration code required for initializing
        the tasking soft links that are common to the full and the restricted
        run times.

        * s-tarest.adb (Init_RTS): Tasking soft links that are shared with the
        restricted run time has been moved to the package
        System.Soft_Links.Tasking.

        * s-tasini.adb (Init_RTS): Tasking soft links that are shared with the
        restricted run time has been moved to the package
        System.Soft_Links.Tasking.

        * Makefile.rtl: Add entry for s-solita.o in run-time library list.

        * s-solita.ads, s-solita.adb: New files.

2004-07-20  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * trans.c (Identifier_to_gnu, Pragma_to_gnu, Attribute_to_gnu,
        Case_Statement_to_gnu): Split off from gnat_to_gnu.
        (Loop_Statement_to_gnu, Subprogram_Body_to_gnu, call_to_gnu,
        Handled_Sequence_Of_Statements_to_gnu, Exception_Handler_to_gnu_sjlj,
        Exception_Handler_to_gnu_zcx): Likewise.

2004-07-17  Joseph S. Myers  <jsm@polyomino.org.uk>

        * gigi.h (builtin_function): Declare.

2004-07-15  Robert Dewar  <dewar@gnat.com>

        * makegpr.adb, s-secsta.ads, sem_ch3.adb, sem_case.adb: Minor
        reformatting

        * gnat_ugn.texi: Add instantiation of direct_io or sequential_io with
        access values as an example of a warning.

        * gnat_rm.texi: Document new attribute Has_Access_Values

        * gnat-style.texi: Document that box comments belong on nested
        subprograms

        * sem_util.ads (Has_Access_Values): Improved documentation

        * s-finimp.ads, s-finimp.adb: Fix spelling error in comment

        * sem_prag.adb (Check_Duplicated_Export_Name): New procedure
        (Process_Interface_Name): Call to this new procedure
        (Set_Extended_Import_Export_External_Name): Call to this new procedure

        * s-mastop-x86.adb, 9drpc.adb: Fix spelling error in comment

        * a-direio.ads, a-sequio.ads: Warn if Element_Type has access values

        * einfo.ads: Minor comment typo fixed

2004-07-15  Jose Ruiz  <ruiz@act-europe.fr>

        * snames.adb: Add _atcb.

        * snames.ads: Add Name_uATCB.

        * s-tarest.adb (Create_Restricted_Task): ATCBs are always preallocated
        (in the expanded code) when using the restricted run time.

        * s-tarest.ads (Create_Restricted_Task): Created_Task transformed into
        a in parameter in order to allow ATCBs to be preallocated (in the
        expanded code).

        * s-taskin.adb (Initialize_ATCB): T converted into a in parameter in
        order to allow ATCBs to be preallocated. In case of error, the ATCB is
        deallocated in System.Tasking.Stages.

        * s-taskin.ads (Initialize_ATCB): T converted into a in parameter in
        order to allow ATCBs to be preallocated.

        * s-tassta.adb (Create_Task): In case of error the ATCB is deallocated
        here. It was previously done in Initialize_ATCB.

        * rtsfind.ads: Make the Ada_Task_Control_Block visible.

        * exp_ch9.adb: Preallocate the Ada_Task_Control_Block when using the
        Restricted run time.

        * exp_ch3.adb: When using the Restricted run time, pass the
        preallocated Ada_Task_Control_Block when creating a task.

2004-07-15  Ed Schonberg  <schonberg@gnat.com>

        * sem_util.adb (Normalize_Actuals): If there are no actuals on a
        function call that is itself an actual in an enclosing call, diagnose
        problem here rather than assuming that resolution will catch it.

        * sem_ch7.adb (Analyze_Package_Specification): If the specification is
        the local copy of a generic unit for a formal package, and the generic
        is a child unit, install private part of ancestors before compiling
        private part of spec.

        * sem_cat.adb (Validate_Categorization_Dependency): Simplify code to
        use scope entities rather than tree structures, to handle properly
        parent units that are instances rewritten as bodies for inlining
        purposes.

        * sem_ch10.adb (Get_Parent_Entity, Implicit_With_On_Parent,
        Remove_Parents): Handle properly a parent unit that is an
        instantiation, when the unit has been rewritten as a body for inlining
        purposes.

        * par.adb (Goto_List): Global variable to collect goto statements in a
        given unit, for use in detecting natural loops.

        * par-ch5.adb (P_Goto_Statement): Add goto to global Goto_List, for
        use in detecting natural loops.

        * par-labl.adb (Find_Natural_Loops): Recognize loops create by
        backwards goto's, and rewrite as a infinite loop, to improve locality
        of temporaries.

        * exp_util.adb (Force_Evaluation): Recognize a left-hand side
        subcomponent that includes an indexed reference, to prevent the
        generation of copies that would miscompile the desired assignment
        statement.
        (Build_Task_Image_Decls): Add a numeric suffix to
        generated name for string variable, to avoid spurious conflicts with
        the name of the type of a single protected object.

        * exp_ch4.adb (Expand_Array_Equality): If indices are distinct, use a
        loop with an explicit exit statement, to avoid generating an
        out-of-range value with 'Succ leading to spurious constraint_errors
        when compiling with -gnatVo.

2004-07-15  Thomas Quinot  <quinot@act-europe.fr>

        * sem_ch4.adb (Analyze_Slice): Always call Analyze on the prefix: it
        might not be analyzed yet, even if its Etype is already set (case of an
        unchecked conversion built using Unchecked_Convert_To, for example).
        If the prefix has already been analyzed, this will be a nop anyway.

        * exp_ch5.adb (Make_Tag_Ctrl_Assignment): For an assignment of a
        controller type, or an assignment of a record type with controlled
        components, copy only user data, and leave the finalization chain
        pointers untouched.

2004-07-15  Vincent Celier  <celier@gnat.com>

        * make.adb (Collect_Arguments): Improve error message when attempting
        to compile a source not part of any project, when -x is not used.

        * prj.ads: (Defined_Variable_Kind): New subtype

        * prj-attr.adb (Register_New_Package): Two new procedures to register
        a package with or without its attributes.
        (Register_New_Attribute): Mew procedure to register a new attribute in a
        package.
        New attribute oriented subprograms: Attribute_Node_Id_Of,
        Attribute_Kind_Of, Set_Attribute_Kind_Of, Attribute_Name_Of,
        Variable_Kind_Of, Set_Variable_Kind_Of, Optional_Index_Of,
        Next_Attribute.
        New package oriented subprograms: Package_Node_Id_Of,
        Add_Unknown_Package, First_Attribute_Of, Add_Attribute.

        * prj-attr.ads (Attribute_Node_Id): Now a private, self initialized
        type.
        (Package_Node_Id): Now a private, self initialized type
        (Register_New_Package): New procedure to register a package with its
        attributes.
        New attribute oriented subprograms: Attribute_Node_Id_Of,
        Attribute_Kind_Of, Set_Attribute_Kind_Of, Attribute_Name_Of,
        Variable_Kind_Of, Set_Variable_Kind_Of, Optional_Index_Of,
        Next_Attribute.
        New package oriented subprograms: Package_Node_Id_Of,
        Add_Unknown_Package, First_Attribute_Of, Add_Attribute.

        * prj-dect.adb (Parse_Attribute_Declaration,
        Parse_Package_Declaration): Adapt to new spec of Prj.Attr.

        * prj-makr.adb (Make): Parse existing project file before creating
        other files. Fail if there was an error during parsing.

        * prj-proc.adb (Add_Attributes, Process_Declarative_Items): Adapt to
        new spec of Prj.Attr.

        * prj-strt.adb (Attribute_Reference, Parse_Variable_Reference): Adapt
        to new spec of Prj.Attr.

2004-07-15  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * utils2.c: Fix typo in comment.

2004-07-14  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * trans.c (add_decl_expr): Clear TREE_READONLY if clear DECL_INITIAL.
        * utils.c (unchecked_convert): Don't do two VIEW_CONVERT_EXPRs.

2004-07-14  Andreas Schwab  <schwab@suse.de>

        * trans.c (gnat_init_stmt_group): Remove duplicate definition.

2004-07-13  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * decl.c: (gnat_to_gnu_entity, object case): Convert initializer to
        object type.
        (gnat_to_gnu_entity, case E_Record_Subtype): Properly set
        TYPE_STUB_DECL.

        * misc.c (gnat_types_compatible_p): New function.
        (LANG_HOOKS_TYPES_COMPATIBLE_P): New hook, to use it.
        (LANG_HOOKS_TYPE_MAX_SIZE, gnat_type_max_size): New.

        * trans.c (gigi): Move processing of main N_Compilation_Unit here.
        (gnat_to_gnu, case N_Compilation_Unit): Just handle nested case here.
        (add_stmt): Force walking of sizes and DECL_INITIAL for DECL_EXPR.
        (mark_visited): Don't mark dummy type.
        (tree_transform <N_Procedure_Call_Statement>): Unless this is an In
        parameter, we must remove any LJM building from GNU_NAME.
        (gnat_to_gnu, case N_String_Literal): Fill in indices in CONSTRUCTOR.
        (pos_to_constructor): Use int_const_binop.
        (gnat_to_gnu, case N_Identifier): Don't reference DECL_INITIAL of
        PARM_DECL.

        * utils.c (gnat_init_decl_processing): Don't make two "void" decls.
        (gnat_pushlevel): Set TREE_USE on BLOCK node.
        (gnat_install_builtins): Add __builtin_memset.

2004-07-13  Olivier Hainque  <hainque@act-europe.fr>

        * decl.c (gnat_to_gnu_entity <E_Variable>): If we are making a pointer
        for a renaming, stabilize the initialization expression if we are at a
        local level.  At the local level, uses of the renaming may be performed
        by a direct dereference of the initializing expression, and we don't
        want possible variables there to be evaluated for every use.

        * trans.c (gnat_stabilize_reference, gnat_stabilize_reference_1):
        Propagate TREE_SIDE_EFFECTS and TREE_THIS_VOLATILE to avoid loosing
        them on the way.  Account for the fact that we may introduce side
        effects in the process.

2004-07-13  Richard Henderson  <rth@redhat.com>

        * misc.c (default_pass_by_ref): Use pass_by_reference.

2004-07-11  Joseph S. Myers  <jsm@polyomino.org.uk>

        * misc.c (LANG_HOOKS_CLEAR_BINDING_STACK, LANG_HOOKS_PUSHLEVEL,
        LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK): Remove.

2004-07-08  Richard Henderson  <rth@redhat.com>

        * trans.c (gnat_to_gnu <N_Handled_Sequence_Of_Statements>): Update
        commentary.

2004-07-06  Vincent Celier  <celier@gnat.com>

        * vms_conv.ads: Minor reformatting.
        Alphabetical order for enumerated values of type Command_Type, to have
        the command in alphabetical order for the usage.

        * vms_conv.adb (Process_Argument): Set Keep_Temporary_Files to True for
        the special qualifier /KEEP_TEMPORARY_FILES (minimum 6 characters).

        * gnat_ugn.texi: Document new switch -dn for the GNAT driver.

        * makegpr.adb (Global_Archive_Exists): New global Boolean variable
        (Add_Archive_Path): Only add the global archive if there is one.
        (Build_Global_Archive): Set Global_Archive_Exists depending if there is
        or not any object file to put in the global archive, and don't build
        a global archive if there is none.
        (X_Switches): New table
        (Compile_Link_With_Gnatmake): Pass to gnatmake the -X switches stored
        in the X_Switches table, if any.
        (Initialize): Make sure the X_Switches table is empty
        (Scan_Arg): Record -X switches in table X_Switches

        * opt.ads (Keep_Temporary_Files): New Boolean flag, defaulted to False.

        * make.adb: Minor comment fix

        * gnatname.adb (Gnatname): When not on VMS, and gnatname has been
        invoked with directory information, add the directory in front of the
        path.

        * gnatchop.adb (Gnatchop): When not on VMS, and gnatchop has been
        invoked with directory information, add the directory in front of the
        path.

        * gnatcmd.adb (Delete_Temp_Config_Files): Only delete temporary files
        when Keep_Temporary_Files is False.
        (GNATCmd): When not on VMS, and the GNAT driver has been invoked with
        directory information, add the directory in front of the path.
        When not on VMS, handle new switch -dn before the command to set
        Keep_Temporary_Files to True.
        (Non_VMS_Usage): Use lower case for the non VMS usage: this is valid
        everywhere.

        * gnatlink.adb (Gnatlink): When not on VMS, and gnatlink has been
        invoked with directory information, add the directory in front of the
        path.

2004-07-06  Thomas Quinot  <quinot@act-europe.fr>

        * snames.ads, snames.adb (Name_Stub): New name for the distributed
        systems annex.

        * rtsfind.ads: New RTE TC_Object, for DSA/PolyORB.
        New RTEs RAS_Proxy_Type and RAS_Proxy_Type_Access, for DSA.

        * g-socket.adb (To_Timeval): Fix incorrect conversion of
        Selector_Duration to Timeval for the case of 0.0.

        * exp_util.ads (Evolve_Or_Else): Fix overenthusiastic copy/paste of
        documentation from Evolve_And_Then.

2004-07-06  Jose Ruiz  <ruiz@act-europe.fr>

        * s-taprop-tru64.adb, s-taprop-os2.adb,
        s-taprop-mingw.adb, s-taprop-posix.adb: Update comment.

2004-07-06  Robert Dewar  <dewar@gnat.com>

        * s-osinte-hpux.ads, s-osinte-freebsd.ads,
        s-osinte-lynxos.ads, s-taprop-lynxos.adb, s-osinte-tru64.ads,
        s-osinte-aix.ads, s-osinte-irix.ads, s-taprop-irix.adb,
        s-interr-sigaction.adb, s-taprop-irix-athread.adb,
        s-osinte-hpux-dce.adb, s-taprop-hpux-dce.adb,
        s-taprop-linux.adb, s-taprop-dummy.adb, s-taprop-solaris.adb,
        s-interr-vms.adb, s-osinte-vms.ads, s-taprop-vms.adb,
        s-osinte-vxworks.ads, s-osprim-vxworks.adb, a-numaux-x86.adb,
        a-except.adb, a-exexpr.adb, a-intsig.adb, a-tags.adb,
        a-tags.ads, bindgen.ads, checks.adb, checks.adb,
        csets.ads, einfo.ads, einfo.ads, elists.adb, exp_ch4.adb,
        exp_ch7.adb, exp_dist.adb, exp_util.adb, freeze.adb,
        g-dynhta.adb, gnatmem.adb, g-regexp.adb, inline.adb,
        i-os2thr.ads, osint.adb, prj.adb, scng.adb, sem_cat.adb,
        sem_ch10.adb, sem_ch12.adb, sem_ch4.adb, sem_ch7.adb,
        sem_ch8.adb, sem_disp.adb, sem_prag.adb, sem_res.adb,
        sem_type.adb, sem_type.ads, sem_warn.adb, s-ficobl.ads,
        s-finimp.adb, s-htable.adb, sinfo.ads, sinput-l.ads,
        s-interr.adb, s-interr.ads, sprint.adb, s-tarest.adb,
        s-tasini.ads, s-taskin.ads, s-taskin.ads, uname.adb,
        vms_data.ads: Minor reformatting,
        Fix bad box comment format.

        * gnat_rm.texi: Fix minor grammatical error

        * sem_attr.adb, exp_attr.adb: New attribute Has_Access_Values

        * sem_util.ads, sem_util.adb (Requires_Transient_Scope): Allow many
        more cases of discriminated records to be recognized as not needing a
        secondary stack.
        (Has_Access_Values): New function.

        * snames.h, snames.adb, snames.ads: New attribute Has_Access_Values

        * cstand.adb, layout.ads, layout.adb, sem_ch13.ads: Change name
        Set_Prim_Alignment to Set_Elem_Alignment (more accurate correspondence
        with LRM terminology).
        Change terminology in comments primitive type => elementary type.

2004-07-06  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15602
        * sem_ch7.adb (Unit_Requires_Body): For a generic package, the formal
        parameters do not impose any requirements on the presence of a body.

2004-07-06  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15593
        * sem_ch12.adb (Analyze_Package_Instantiation): If the generic is not a
        compilation unit and is in an open scope at the point of instantiation,
        assume that a body may be present later.

2004-07-06  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch13.adb (Analyze_Attribute_Definition_Clause, case 'Size):
        Improve error message when specified size is not supported.

        * sem_ch6.adb (Maybe_Primitive_Operation): A library-level subprogram
        is never a primitive operation.

2004-07-05  Andreas Schwab  <schwab@suse.de>

        * ada-tree.h (TYPE_LEFT_JUSTIFIED_MODULAR_P): Use
        RECORD_OR_UNION_CHECK.
        (TYPE_CONTAINS_TEMPLATE_P): Likewise.

2004-07-04  Kelley Cook  <kcook@gcc.gnu.org>

        * Make-lang.in (doc/gnat_ugn_unw.texi): Eliminate explicit
        dependency on xgnatugn, instead build it via a submake.
        (ADA_INFOFILES): Add doc/gnat_ugn_unw.texi.

2004-07-04  Richard Henderson  <rth@redhat.com>

        * utils2.c (gnat_mark_addressable): Don't put_var_into_stack.

2004-07-01  Richard Henderson  <rth@redhat.com>

        * trans.c (gnat_stabilize_reference): Don't handle RTL_EXPR.
        * utils.c (max_size): Likewise.

2004-06-28  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * decl.c: Remove calls to add_decl_expr, pushdecl, rest_of_compilation,
        and rest_of_type_compilation; add arg to create_*_decl.
        (annotate_decl_with_node): Deleted.
        (gnat_to_gnu_entity, case E_Array_Type): Set location of fields.
        * gigi.h (get_decls, block_has_vars, pushdecl): Deleted.
        (get_current_block_context, gnat_pushdecl): New declarations.
        (gnat_init_stmt_group): Likewise.
        (create_var_decl, create_type_decl, create_subprog_decl): Add new arg.
        * misc.c (LANG_HOOKS_CLEAR_BINDING_STACK): Deleted.
        (LANG_HOOKS_GETDECLS, LANG_HOOKS_PUSHDECL): Deleted.
        (gnat_init): Call gnat_init_stmt_group.
        * trans.c (global_stmt_group, gnu_elab_proc_decl): New variables.
        (gnu_pending_elaboration_list): Deleted.
        (mark_visited, mark_unvisited, gnat_init_stmt_group): New functions.
        (gigi): Rearrange initialization calls and move some to last above.
        (gnat_to_gnu): If statement and not in procedure, go into elab proc.
        Delete calls to add_decl_expr; add arg to create_*_decl.
        (gnat_to_gnu, case N_Loop): Recalculate side effects on COND_EXPR.
        (gnat_to_gnu, case N_Subprogram_Body): Move some code to
        begin_subprog_body and call it.
        Don't push and pop ggc context.
        (gnat_to_gnu, case N_Compilation_Unit): Rework to support elab proc.
        (add_stmt): Remove handling of DECL_EXPR from here.
        If not in function, mark visited.
        (add_decl_expr): Put global at top level.
        Check for cases of DECL_INITIAL we have to handle here.
        (process_type): Add extra arg to create_type_decl.
        (build_unit_elab): Rework to just gimplify.
        * utils.c (pending_elaborations, elist_stack, getdecls): Deleted.
        (block_has_vars, mark_visited, add_pending_elaborations): Likewise.
        (get_pending_elaborations, pending_elaborations_p): Likewise.
        (push_pending_elaborations, pop_pending_elaborations): Likewise.
        (get_elaboration_location, insert_elaboration_list): Likewise.
        (gnat_binding_level): Renamed from ada_binding_level.
        (init_gnat_to_gnu): Don't clear pending_elaborations.
        (global_bindings_p): Treat as global if no current_binding_level.
        (set_current_block_context): New function.
        (gnat_pushdecl): Renamed from pushdecl; major rework.
        All callers changed.
        (create_type_decl, create_var_decl, create_subprog_decl): Add new arg.
        (finish_record_type): Call call pushdecl for stub decl.
        (function_nesting_depth): Deleted.
        (begin_subprog_body): Delete obsolete code.
        * utils2.c (build_call_alloc_dealloc): Add new arg to create_var_decl.

2004-06-28  Robert Dewar  <dewar@gnat.com>

        * mlib-tgt-tru64.adb, mlib-tgt-aix.adb, mlib-tgt-irix.adb,
        mlib-tgt-irix.adb, mlib-tgt-hpux.adb, mlib-tgt-linux.adb,
        mlib-tgt-linux.adb, mlib-tgt-solaris.adb, mlib-tgt-solaris.adb,
        mlib-tgt-vms-alpha.adb, mlib-tgt-vms-alpha.adb, mlib-tgt-vms-ia64.adb,
        a-strmap.adb, a-strmap.ads, clean.adb: Minor reformatting

        * exp_util.adb (Is_Possibly_Unaligned_Slice): Completely rewritten, to
        deal with problem of inefficient slices on machines with strict
        alignment, when the slice is a component of a composite.

        * checks.adb (Apply_Array_Size_Check): Do not special case 64-bit
        machines, we need the check there as well.

2004-06-28  Ed Schonberg  <schonberg@gnat.com>

        * exp_ch5.adb (Expand_Assign_Array): Use correct condition to
        determine safe copying direction for overlapping slice assignments
        when component is controlled.

        * sem_ch12.adb (Instantiate_Formal_Package): Implicit operations of a
        formal derived type in the actual for a formal package are visible in
        the enclosing instance.

2004-06-28  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15600
        * sem_util.adb (Trace_Components): Diagnose properly an illegal
        circularity involving a private type whose completion includes a
        self-referential component.
        (Enter_Name): Use Is_Inherited_Operation to distinguish a source
        renaming or an instantiation from an implicit derived operation.

2004-06-28  Pascal Obry  <obry@gnat.com>

        * mlib-tgt-mingw.adb: (Library_Exists_For): Remove "lib" prefix from
        DLL.
        (Library_File_Name_For): Idem.

2004-06-28  Matthew Gingell  <gingell@gnat.com>

        * g-traceb.ads: Add explanatory note on the format of addresses
        expected by addr2line.

2004-06-28  Jerome Guitton  <guitton@act-europe.fr>

        * Makefile.in: Force debugging information on s-tasdeb.adb,
        a-except.adb and s-assert.adb needed by the debugger.

2004-06-28  Vincent Celier  <celier@gnat.com>

        * make.adb (Collect_Arguments_And_Compile): Change Flag1 to
        Need_To_Build_Lib.
        (Gnatmake): Ditto.

        * mlib-prj.adb (Check_Library): Replace Flag1 with Need_To_Build_Lib

        * prj.adb: Minor reformatting
        (Project_Empty): Change Flag1 to Need_To_Build_Lib. Remove Flag2.

        * prj.ads: Comment updates
        Minor reformatting
        (Project_Data): Change Flag1 to Need_To_Build_Lib.
        Remove Flag2: not used.

        * prj-dect.adb (Parse_Declarative_Items): Accept "null" as a
        declaration.

        * gnat_ugn.texi: Put a "null;" declaration in one project file example

        * gnat_rm.texi: Document Empty declarations "null;".

        * makegpr.adb (Compile_Link_With_Gnatmake): Put the global archives in
        front of the linker options.
        (Link_Foreign): Put the global archives and the libraries in front of
        the linker options.

2004-06-28  Javier Miranda  <miranda@gnat.com>

        * rtsfind.adb: (Get_Unit_Name): Fix typo in comment
        (RTU_Loaded): Code cleanup
        (Set_RTU_Loaded): New procedure to register as *loaded* explicitly
        withed predefined units.

        * rtsfind.ads (Set_RTU_Loaded): New procedure to register as *loaded*
        explicitly withed predefined units.
        Fix typo in comment

        * sem_ch10.adb (Analyze_Compilation_Unit): Register as *loaded*
        explicitly withed predefined units.

2004-06-26  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * ada-tree.def (DECL_STMT): Deleted.
        * ada-tree.h (IS_ADA_STMT): Now test against STMT_STMT.
        (DECL_STMT_VAR): Deleted.
        * decl.c: add_decl_stmt now add_decl_expr.
        * gigi.h: Likewise.
        * trans.c: Likewise.
        (gnat_gimplify_type_sizes, gnat_gimplify_one_sizepos): Deleted.
        (gnat_to_gnu, case N_Subprogram_Body): Set cfun->function_end_locus.
        (add_stmt): Only handle padded type here.
        (add_stmt_with_node): Allow gnat_node to not be present.
        (gnat_gimplify_stmt, case USE_STMT): Set *STMT_P to null.
        (gnat_gimplify_stmt, case DECL_STMT): Deleted.
        (gnat_stabilize_reference_1): If COMPONENT_REF of fat pointer,
        make a SAVE_EXPR for the entire fat pointer.
        * utils.c (pushdecl): Walk a DECL_EXPR in global case.
        (create_index_type): Make a DECL_EXPR.
        (end_subprog_body): Don't call allocate_struct_function here but
        do clear cfun.

2004-06-25  Pascal Obry  <obry@gnat.com>

        * makegpr.adb (Build_Library): Remove parameter Lib_Address and
        Relocatable from Build_Dynamic_Library call.

        * gnat_ugn.texi: Change documentation about Library_Kind. Dynamic and
        Relocatable are now synonym.

        * Makefile.in: Use s-parame-mingw.adb on MingW platform.

        * mlib-prj.adb (Build_Library): Remove DLL_Address constant definition.
        Remove parameter Lib_Address and Relocatable from Build_Dynamic_Library
        call.

        * mlib-tgt.ads, mlib-tgt.adb (Build_Dynamic_Library): Remove parameter
        Lib_Address and Relocatable.
        (Default_DLL_Address): Removed.

        * mlib-tgt-tru64.adb, mlib-tgt-aix.adb, mlib-tgt-irix.adb,
        mlib-tgt-hpux.adb, mlib-tgt-linux.adb, mlib-tgt-solaris.adb,
        mlib-tgt-vms-alpha.adb, mlib-tgt-vms-ia64.adb, mlib-tgt-vxworks.adb:
        (Build_Dynamic_Library): Remove parameter Lib_Address and Relocatable.
        (Default_DLL_Address): Removed.

        * mlib-tgt-mingw.adb: Ditto.
        (Build_Dynamic_Library): Do not add "lib" prefix to the DLL name.

        * s-taprop-mingw.adb (Create_Task): Use Adjust_Storage_Size to compute
        the initial thread stack size.

        * a-strmap.ads: Move package L to private part as it is not used in
        the spec. Found while reading code.

2004-06-25  Olivier Hainque  <hainque@act-europe.fr>

        * tracebak.c: Introduce support for a GCC infrastructure based
        implementation of __gnat_backtrace.

        * raise.c: Don't rely on a C mapping of the GNAT_GCC_Exception record
        any more. Use accessors instead. This eases maintenance and relaxes
        some alignment constraints.
        (_GNAT_Exception structure): Remove the Ada specific fields
        (EID_For, Adjust_N_Cleanups_For): New accessors, exported by
        a-exexpr.adb.
        (is_handled_by, __gnat_eh_personality): Replace component references to
        exception structure by use of the new accessors.

        * init.c (__gnat_initialize): Adjust comments to match the just
        reverted meaning of the -static link-time option.

        * adaint.c (convert_addresses): Arrange not to define a stub for
        mips-irix any more, as we now want to rely on a real version from a
        recent libaddr2line.

        * a-exexpr.adb: Provide new accessors to a GNAT_GCC occurrence, so that
        the personality routine can use them and not have to rely on a C
        counterpart of the record anymore. This simplifies maintenance and
        relaxes the constraint of having Standard'Maximum_Alignment match
        BIGGEST_ALIGNMENT.
        Update comments, and add a section on the common header alignment issue.

2004-06-25  Geert Bosch  <bosch@gnat.com>

        * a-ngelfu.adb (Tanh): Use full 20 digit precision for constants in
        polynomial approximation. Fixes inconsistency with Cody/Waite algorithm.

2004-06-25  Robert Dewar  <dewar@gnat.com>

        * gnat_rm.texi: Fix section on component clauses to indicate that the
        restriction on byte boundary placement still applies for bit packed
        arrays.
        Add comment on stack usage from Initialize_Scalars

        * gnat_ugn.texi: Add documentation for -gnatyLnnn

        * stylesw.ads, stylesw.adb: Implement new -gnatyLnnn option for
        limiting nesting level.

        * usage.adb: Add line for -gnatyLnnn switch

        * g-debpoo.ads, xtreeprs.adb, sinput.ads, sem_ch13.ads,
        sem_ch13.adb, exp_aggr.adb: Minor reformatting

        * sem_prag.adb (Process_Atomic_Shared_Volatile): Set Is_Atomic on base
        type as well as on the subtype. This corrects a problem in freeze in
        setting alignments of atomic types.

        * sem_eval.ads: Minor comment typo fixed

        * par-util.adb (Push_Scope_Stack): Check for violation of max nesting
        level.  Minor reformatting.

        * fname.adb (Is_Predefined_File_Name): Require a letter after the
        minus sign. This means that file names like a--b.adb will not be
        considered predefined.

        * freeze.adb: Propagate new flag Must_Be_On_Byte_Boundary to containing
        record Test new flag and give diagnostic for bad component clause.
        (Freeze_Entity): Set alignment of array from component alignment in
        cases where this is safe to do.

        * exp_pakd.adb: Set new flag Must_Be_On_Byte_Boundary for large packed
        arrays.

        * cstand.adb: (Create_Standard): Set alignment of String to 1

        * einfo.ads, einfo.adb: Introduce new flag Must_Be_On_Byte_Boundary

        * exp_ch4.adb (Expand_Array_Equality): Improve efficiency of generated
        code in the common constrained array cases.

        * a-storio.adb: Change implementation to avoid possible alignment
        problems on machines requiring strict alignment (data should be moved
        as type Buffer, not type Elmt).

        * checks.adb (Apply_Array_Size_Check): Improve these checks by
        killing the overflow checks which we really do not need (64-bits is
        enough).

2004-06-25  Vincent Celier  <celier@gnat.com>

        * makegpr.adb (Is_Included_In_Global_Archive): New Boolean function
        (Add_Archives.Recursive_Add_Archives): Call Add_Archive_Path
        inconditionally for the main project.
        (Recursive_Add_Archives.Add_Archive_Path): New procedure
        (Link_Executables.Check_Time_Stamps): New procedure
        (Link_Executables.Link_Foreign): New procedure
        Changes made to reduce nesting level of this package
        (Check): New procedure
        (Add_Switches): When not in quiet output, check that a switch is not
        the concatenation of several valid switches. If it is, issue a warning.
        (Build_Global_Archive): If the global archive is rebuilt, linking need
        to be done.
        (Compile_Sources): Rebuilding a library archive does not imply
        rebuilding the global archive.
        (Build_Global_Archive): New procedure
        (Build_Library): New name for Build_Archive, now only for library
        project
        (Check_Archive_Builder): New procedure
        (Create_Global_Archive_Dependency_File): New procedure
        (Gprmake): Call Build_Global_Archive before linking
        * makegpr.adb: Use Other_Sources_Present instead of Sources_Present
        throughout.
        (Scan_Arg): Display the Copyright notice when -v is used

        * gnat_ugn.texi: Document new switch -files= (VMS qualifier /FILES=)
        for gnatls.

        * vms_data.ads: Add qualifier /MAX_NESTING=nnn (-gnatyLnnn) for GNAT
        COMPILE.
        Add new GNAT LIST qualifier /FILES=
        Added qualifier /DIRECTORY= to GNAT METRIC
        Added qualifier /FILES= to GNAT METRIC
        Added qualifier /FILES to GNAT PRETTY

        * switch.adb (Is_Front_End_Switch): Refine the test for --RTS or -fRTS,
        to take into account both versions of the switch.

        * switch-c.adb (Scan_Front_End_Switches): New switch -gnatez. Should
        always be the last switch to the gcc driver. Disable switch storing so
        that switches automatically added by the gcc driver are not put in the
        ALI file.

        * prj.adb (Project_Empty): Take into account changes in components of
        Project_Data.

        * prj.ads (Languages_Processed): New enumaration value All_Languages.

        * prj.ads (Project_Data): Remove component Lib_Elaboration: never
        used. Split Boolean component Ada_Sources_Present in two Boolean
        components Ada_Sources_Present and Other_Sources_Present.
        Minor reformatting

        * prj-env.adb (For_All_Source_Dirs.Add): Use Ada_Sources_Present
        instead of Sources_Present.
        (Set_Ada_Paths.Add.Recursive_Add): Ditto

        * prj-nmsc.adb: Minor reformatting
        (Check_Ada_Naming_Scheme): New name of procedure Check_Naming_Scheme
        (Check_Ada_Naming_Scheme_Validity): New name of previous procedure
        Check_Ada_Naming_Scheme.
        Change Sources_Present to Ada_Sources_Present or Other_Sources_Present
        throughout.

        * prj-part.adb (Post_Parse_Context_Clause): New Boolean parameter
        In_Limited.
        Make sure that all cycles where there is at least one "limited with"
        are detected.
        (Parse_Single_Project): New Boolean parameter In_Limited

        * prj-proc.adb (Recursive_Check): When Process_Languages is
        All_Languages, call first Prj.Nmsc.Ada_Check, then
        Prj.Nmsc.Other_Languages_Check.

        * prj-proc.adb (Process): Use Ada_Sources_Present or
        Other_Sources_Present (instead of Sources_Present) depending on
        Process_Languages.

        * lang-specs.h: Keep -g and -m switches in the same order, and as the
        last switches.

        * lib.adb (Switch_Storing_Enabled): New global Boolean flag
        (Disable_Switch_Storing): New procedure. Set Switch_Storing_Enabled to
        False.
        (Store_Compilation_Switch): Do nothing if Switch_Storing_Enabled is
        False.

        * lib.ads (Disable_Switch_Storing): New procedure.

        * make.adb: Modifications to reduce nesting level of this package.
        (Check_Standard_Library): New procedure
        (Gnatmake.Check_Mains): New procedure
        (Gnatmake.Create_Binder_Mapping_File): New procedure
        (Compile_Sources.Compile): Add switch -gnatez as the last option
        (Display): Never display -gnatez

        * Makefile.generic:
        When using $(MAIN_OBJECT), always use $(OBJ_DIR)/$(MAIN_OBJECT)

        * gnatcmd.adb (Check_Project): New function
        (Process_Link): New procedure to reduce nesting depth
        (Check_Files): New procedure to reduce the nesting depth.
        For GNAT METRIC, include the inherited sources in extending projects.
        (GNATCmd): When GNAT LS is invoked with a project file and no files,
        add the list of files from the sources of the project file. If this list
        is too long, put it in a temp text files and use switch -files=
        (Delete_Temp_Config_Files): Delete the temp text file that contains
        a list of source for gnatpp or gnatmetric, if one has been created.
        (GNATCmd): For GNAT METRIC and GNAT PRETTY, if the number of sources
        in the project file is too large, create a temporary text file that
        list them and pass it to the tool with "-files=<temp text file>".
        (GNATCmd): For GNAT METRIC add "-d=<abject dir>" as the first switch

        * gnatlink.adb (Gnatlink): Do not compile with --RTS= when the
        generated file is in not in Ada.

        * gnatls.adb: Remove all parameters And_Save that are no longer used.
        (Scan_Ls_Arg): Add processing for -files=
        (Usage): Add line for -files=

        * g-os_lib.adb (On_Windows): New global constant Boolean flag
        (Normalize_Pathname): When on Windows and the path starts with a
        directory separator, make sure that the resulting path will start with
        a drive letter.

        * clean.adb (Clean_Archive): New procedure
        (Clean_Project): When there is non-Ada code, delete the global archive,
        the archive dependency files, the object files and their dependency
        files, if they exist.
        (Gnatclean): Call Prj.Pars.Parse for All_Languages, not for Ada only.

2004-06-25  Thomas Quinot  <quinot@act-europe.fr>

        * sinfo.ads: Fix typo in comment.

        * sem_dist.adb (Process_Remote_AST_Attribute): Simplify code that uses
        the TSS for remote access-to-subprogram types, since these TSS are
        always present once the type has been analyzed.
        (RAS_E_Dereference): Same.

        * sem_attr.adb (Analyze_Attribute): When analysis of an attribute
        reference raises Bad_Attribute, mark the reference as analyzed so the
        node (and any children resulting from rewrites that could have occurred
        during the analysis that ultimately failed) is not analyzed again.

        * exp_ch7.ads (Find_Final_List): Fix misaligned comment.

        * exp_dist.adb: Minor comment fix.

        * exp_ch4.adb (Expand_N_Allocator): For an allocator whose expected
        type is an anonymous access type, no unchecked deallocation of the
        allocated object can occur. If the object is controlled, attach it with
        a count of 1. This allows attachment to the Global_Final_List, if
        no other relevant list is available.
        (Get_Allocator_Final_List): For an anonymous access type that is
        the type of a discriminant or record component, the corresponding
        finalisation list is the one of the scope of the type.

2004-06-25  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch3.adb (Replace_Type): When computing the signature of an
        inherited subprogram, use the first subtype if the derived type
        declaration has no constraint.

        * exp_ch6.adb (Add_Call_By_Copy_Code): Check that formal is an array
        before applying previous optimization. Minor code cleanup.

        * exp_util.adb (Is_Possibly_Unaligned_Slice): If the component is
        placed at the beginning of an unpacked record without explicit
        alignment, a slice of it will be aligned and does not need a copy when
        used as an actual.

2004-06-25  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15591
        PR ada/15592
        * sem_ch8.adb (Attribute_Renaming): Reject renaming if the attribute
        reference is written with expressions mimicking parameters.

2004-06-25  Hristian Kirtchev  <kirtchev@gnat.com>

        PR ada/15589
        * sem_ch3.adb (Build_Derived_Record_Type): Add additional check to
        STEP 2a. The constraints of a full type declaration of a derived record
        type are checked for conformance with those declared in the
        corresponding private extension declaration. The message
        "not conformant with previous declaration" is emitted if an error is
        detected.

2004-06-25  Vasiliy Fofanov  <fofanov@act-europe.fr>

        * g-traceb.ads: Document the need for -E binder switch in the spec.

        * g-trasym.ads: Document the need for -E binder switch in the spec.

2004-06-25  Jose Ruiz  <ruiz@act-europe.fr>

        * sem_prag.adb: Add handling of pragma Detect_Blocking.

        * snames.h, snames.ads, snames.adb: Add entry for pragma
        Detect_Blocking.

        * s-rident.ads: Change reference to pragma Detect_Blocking.

        * targparm.ads, targparm.adb: Allow pragma Detect_Blocking in
        system.ads.

        * opt.ads (Detect_Blocking): New Boolean variable (defaulted to False)
        to indicate whether pragma Detect_Blocking is active.

        * par-prag.adb: Add entry for pragma Detect_Blocking.

        * rtsfind.adb (RTU_Loaded): Fix the temporary kludge to get past bug
        of not handling WITH.
        Note that this replaces the previous update which was incorrect.

2004-06-25  Javier Miranda  <miranda@gnat.com>

        * sem_ch10.adb (Re_Install_Use_Clauses): Force the installation of the
        use-clauses to have a clean environment.

        * sem_ch8.adb (Install_Use_Clauses): Addition of a new formal to force
        the installation of the use-clauses to stablish a clean environment in
        case of compilation of a separate unit; otherwise the call to
        use_one_package is protected by the barrier Applicable_Use.

        * sem_ch8.ads (Install_Use_Clauses): Addition of a new formal to force
        the installation of the use-clauses to stablish a clean environment in
        case of compilation of a separate unit.
        (End_Use_Clauses): Minor comment cleanup.

2004-06-25  Sergey Rybin  <rybin@act-europe.fr>

        * gnat_ugn.texi: Add description of the gnatpp 'files' switch

2004-06-23  Richard Henderson  <rth@redhat.com>

        * trans.c (gnat_gimplify_stmt): Update gimplify_type_sizes call.

2004-06-20  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * decl.c (elaborate_expression, elaborate_expression_1): Arguments
        now bool instead of int.
        (gnat_to_gnu_entity, elaborate_expression_1): New arg to COMPONENT_REF.
        * trans.c (gnu_switch_label_stack): New function.
        (gnat_to_gnu, N_Object_Renaming_Declaration): Result is what the
        elaboration of renamed entity returns.
        (gnat_to_gnu, case N_Case_Statement): Add branches to end label.
        (add_decl_stmt): Don't add TYPE_DECL for UNCONSTRAINED_ARRAY_TYPE.
        (gnat_gimplify_stmt): Use alloc_stmt_list, not build_empty_stmt.
        (gnat_gimplify_stmt, case DECL_STMT): gimplify DECL_SIZE and
        DECL_SIZE_UNIT and simplify variable-sized case.
        (gnat_gimplify_type_sizes, gnat_gimplify_one_sizepos): Deleted.
        Callers changes to call gimplify_type_sizes and gimplify_one_sizepos.
        (gnat_stabilize_reference): Add arg to COMPONENT_REF.
        (build_unit_elab): Disable for now.
        * utils.c (mark_visited): New function.
        (pushdecl): Walk tree to call it for global decl.
        (update_pointer_to): Update all variants of pointer and ref types.
        Add arg to COMPONENT_REF.
        (convert): Likewise.
        Move check for converting between variants lower down.
        * utils2.c (build_simple_component_ref): Add arg to COMPONENT_REF.
        (build_allocator): Don't force type of MODIFY_EXPR.
        (gnat_mark_addressable, case VAR_DECL): Unconditionally call
        put_var_into_stack.

2004-06-14  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * ada-tree.def (LOOP_STMT, EXIT_STMT): Update documentation.
        * ada-tree.h (EXIT_STMT_LABEL): Renamed from EXIT_STMT_LOOP.
        * decl.c (gnat_to_gnu_entity): Also set force_global for imported
        subprograms.
        * trans.c (gnu_loop_label_stack): Renamed from gnu_loop_stmt_stack;
        all callers changed.
        (gnat_to_gnu, case N_Loop_Statement, case N_Exit_Statement): Change
        the way that EXIT_STMT finds the loop label.
        (gnat_gimplify_stmt, case LOOP_STMT, EXIT_STMT): Likewise.
        (gnat_gimplify_stmt, case DECL_STMT): Handle variable-sized decls here.
        (add_stmt): Use annotate_with_locus insted of setting directly.
        (pos_to_construct): Set TREE_PURPOSE of each entry to index.
        (gnat_stabilize_reference, case ARRAY_RANGE_REF): Merge with ARRAY_REF.
        * utils.c (gnat_install_builtins): Install __builtin_memcmp.
        (build_vms_descriptor): Add extra args to ARRAY_REF.
        (convert): Use VIEW_CONVERT_EXPR between aggregate types.
        * utils2.c (gnat_truthvalue_conversion, case INTEGER_CST, REAL_CST):
        New cases.
        (build_binary_op): Don't make explicit CONVERT_EXPR.
        Add extra rgs to ARRAY_REF.

2004-06-14  Pascal Obry  <obry@gnat.com>

        * gnat_ugn.texi: Document relocatable vs. dynamic Library_Kind on
        Windows.  Fix minor typo.

        * mlib-tgt-mingw.adb: New implementation using the GCC -shared option
        which is now supported on Windows. With this implementation using the
        Library Project feature is no different on Windows than on UNIX.

2004-06-14  Vincent Celier  <celier@gnat.com>

        * makegpr.adb (Compile_Sources): Nothing to do when there are no
        non-Ada sources.

        * mlib-tgt-vxworks.adb (Library_Exists_For): Remove incorrect comment

        * prj-part.adb (Parse_Single_Project): When a duplicate project name is
        found, show the project name and the path of the previously parsed
        project file.

2004-06-14  Ed Schonberg  <schonberg@gnat.com>

        * exp_ch6.adb (Add_Call_By_Copy_Code): For an out-parameter that is an
        array, avoid copying the actual before the call.

2004-06-14  Thomas Quinot  <quinot@act-europe.fr>

        * g-debpoo.adb: Remove alignment assumptions from GNAT.Debug_Pools.
        Instead, allocate memory on worst-case alignment assumptions, and then
        return an aligned address within the allocated zone.

2004-06-14  Robert Dewar  <dewar@gnat.com>

        * bindgen.adb (Gen_Adainit_Ada): Do not generate external references to
        elab entities in predefined units in No_Run_Time_Mode.
        (Gen_Adainit_C): Same fix
        (Gen_Elab_Calls_Ada): Do not generate calls to elaborate predefined
        units in No_Run_Time_Mode
        (Gen_Elab_Calls_C): Same fix

        * symbols-vms-alpha.adb: Minor reformatting

        * g-debpoo.ads: Minor reformatting

        * lib.adb (In_Same_Extended_Unit): Version working on node id's

        * lib.ads (In_Same_Extended_Unit): Version working on node id's

        * lib-xref.adb: Minor cleanup, use new version of In_Same_Extended_Unit
        working on nodes.

        * make.adb: Minor reformatting

        * par-ch12.adb: Minor reformatting

        * par-prag.adb: Add dummy entry for pragma Profile_Warnings

        * prj-strt.adb: Minor reformatting

        * restrict.ads, restrict.adb: Redo handling of profile restrictions to
        be more general.

        * sem_attr.adb: Minor reformatting

        * sem_ch7.adb: Minor reformatting

        * sem_elab.adb (Check_A_Call): Deal with problem of calling init proc
        for type in the same unit as the object declaration.

        * sem_prag.adb (Check_Arg_Is_External_Name): New procedure, allows
        static string expressions and not just string literals.
        Minor reformatting
        (Set_Warning): Reset restriction warning flag for restriction pragma
        Implement pragma Profile_Warnings
        Implement pragma Profile (Restricted)
        Give obolescent messages for old restrictions and pragmas

        * snames.h, snames.ads, snames.adb: Add new entry for pragma
        Profile_Warnings.

        * s-rident.ads: Add declarations for restrictions required by profile
        Restricted and profile Ravenscar.

        * targparm.ads, targparm.adb: Allow pragma Profile in system.ads

        * gnat_ugn.texi: Correct some missing entries in the list of GNAT
        configuration pragmas.

2004-06-11  Vincent Celier  <celier@gnat.com>

        * mlib-tgt-vms-alpha.adb (Build_Dynamic_Library): Issue switch -R to
        gnatsym, when symbol policy is Restricted.

        * mlib-tgt-vms-ia64.adb (Build_Dynamic_Library): Issue switch -R to
        gnatsym, when symbol policy is Restricted.

        * symbols-vms-alpha.adb (Initialize): When symbol policy is Restricted,
        read the symbol file.
        (Finalize): Fail in symbol policy Restricted if a symbol in the original
        symbol file is not in the object files. Do not create a new symbol file
        when symbol policy is Restricted.

        * gnatbind.adb (Gnatbind): Initialize Snames, because Snames is used
        in Scng.

        * gnatsym.adb (Parse_Vmd_Line): Process new switch -R for symbol policy
        Restricted.
        (Usage): Line for new switch -R

        * make.adb (Initialize): When the platform is not VMS, add the
        directory where gnatmake is invoked in the front of the path, if
        gnatmake is invoked with directory information.  Change the Scan_Args
        while loop to a for loop.
        (Recursive_Compute_Depth): Remove parameter Visited. Improve efficiency:
        if Depth is equal or greater than the proposed depth, there is nothing
        to do.
        (Initialize): Call Recursive_Compute_Depth with initial Depth equal to 1
        instead of 0.

        * prj.ads: Add new symbol policy Restricted.

        * prj-dect.adb (Parse_Case_Construction): Call End_Case_Construction
        with the new parameters Check_All_Labels and Case_Location.

        * prj-nmsc.adb (Ada_Check): Process new symbol policy Restricted
        (Library_Symbol_File needs to be defined).

        * prj-strt.adb (End_Case_Construction): New parameters Check_All_Labels
        and Case_Location If Check_All_Labels is True, check that all values of
        the string type are used, and output warning(s) if they are not.

        * prj-strt.ads (End_Case_Construction): New parameters Check_All_Labels
        and Case_Location.

        * gnat_ugn.texi: Reorder subclauses in menus "Switches for gcc"

        * gnat_ugn.texi: Update documentation about the library directory in
        Library Projects.

        * makegpr.adb (Display_Command): In verbose mode, also display the
        value of the CPATH env var, when the compiler is gcc.
        (Initialize): Change the Scan_Args while loop to a for loop
        (Compile_Individual_Sources): Change directory to object directory
        before compilations.

        * symbols.ads: New symbol policy Restricted.

2004-06-11  Olivier Hainque  <hainque@act-europe.fr>

        * a-except.adb (Raise_After_Setup family): Remove. The responsibility
        is now taken care of internally in the Exception_Propagation package
        and does not require clients assistance any more.

        * a-exexpr.adb (Is_Setup_And_Not_Propagated,
        Set_Setup_And_Not_Propagated, and Clear_Setup_And_Not_Propagated): New
        functions. Helpers to maintain a predicate required in the handling of
        occurrence transfer between tasks.
        This is now handled internally and does not require clients assistance
        for the setup/propagate separation anymore.
        (Setup_Exception, Propagate_Exception): Simplify the Private_Data
        allocation strategy, handle the Setup_And_Not_Propagated predicate and
        document.

        * s-taenca.adb (Check_Exception): Use raise_with_msg instead of
        raise_after_setup, now that everything is handled internally within the
        setup/propagation engine.

2004-06-11  Hristian Kirtchev  <kirtchev@gnat.com>

        * exp_ch6.adb (Expand_Inlined_Call): Add function Formal_Is_Used_Once.
        Add additional conditions for the case of an actual being a simple
        name or literal. Improve inlining by preventing the generation
        of temporaries with a short lifetime (one use).

2004-06-11  Hristian Kirtchev  <kirtchev@gnat.com>

        PR ada/15587

        * einfo.ads: Minor comment updates for Has_Completion and
        E_Constant list of flags.

        * sem_ch3.adb (Analyze_Object_Declaration): Full constant declarations
        and constant redeclarations now set the Has_Completion flag of their
        defining identifiers.

        * sem_ch7.adb (Analyze_Package_Spec): Add procedure
        Inspect_Deferred_Constant_Completion.
        Used to detect private deferred constants that have not been completed
        either by a constant redeclaration or pragma Import. Emits error message
        "constant declaration requires initialization expression".

        * sem_prag.adb (Process_Import_Or_Interface): An Import pragma now
        completes a deferred constant.

2004-06-11  Geert Bosch  <bosch@gnat.com>

        * eval_fat.adb (Decompose_Int): Fix rounding of negative numbers.

        * s-fatgen.adb (Gradual_Scaling): Correct off-by-one error in
        calculating exponent for scaling denormal numbers.
        (Leading_Part): Properly raise Constraint_Error for zero or negative
        Adjustment.
        (Remainder): Properly raise Constraint_Error for zero divisor.

2004-06-11  Thomas Quinot  <quinot@act-europe.fr>

        * sem_util.adb: Minor reformatting.

        * exp_ch2.adb (Expand_Entry_Parameter): Generate an explicit
        dereference when accessing the entry parameter record.
        (Check_Array_Type): Always check for possible implicit dereference.
        (maybe_implicit_dereference): Rename to check_no_implicit_derefence.
        Abort if a pointer is still present (denoting that an implicit
        dereference was left in the tree by the front-end).

        * sem_attr.adb (Expand_Entry_Parameter): Generate an explicit
        dereference when accessing the entry parameter record.
        (Check_Array_Type): Always check for possible implicit dereference.
        (maybe_implicit_dereference): Rename to check_no_implicit_derefence.
        Abort if a pointer is still present (denoting that an implicit
        dereference was left in the tree by the front-end).

2004-06-11  Emmanuel Briot  <briot@act-europe.fr>

        * g-debpoo.adb (Deallocate, Dereference): Add prefix "error:" to error
        message, like the compiler itself does. Easier to parse the output.

        * g-debpoo.ads: (Allocate, Deallocate, Dereference): Add comments.

        * gnat_ugn.texi (gnatxref, gnatfind): Clarify that source names should
        be base names, and not includes directories.

2004-06-11  Arnaud Charlet  <charlet@act-europe.fr>

        * Makefile.generic ($(EXEC)): Depend on $(OBJECTS), not $(OBJ_FILES),
        so that dependencies are properly taken into account by make.

2004-06-11  Arnaud Charlet  <charlet@act-europe.fr>

        PR ada/15622
        * s-unstyp.ads, s-maccod.ads, sem_ch8.adb, s-auxdec.ads,
        exp_intr.adb, s-auxdec-vms_64.ads: Fix typo: instrinsic -> intrinsic

2004-06-11  Jerome Guitton  <guitton@act-europe.fr>

        * Makefile.in (install-gnatlib): install target-specific run-time files.

        * Make-lang.in: Remove obsolete targets.

2004-06-11  Ed Schonberg  <schonberg@gnat.com>

        * par-ch12.adb (P_Generic): Add scope before analyzing subprogram
        specification, to catch misuses of program unit names.

        * sem_res.adb (Resolve_Type_Conversion): Do not emit warnings on
        superfluous conversions in an instance.

2004-06-11  Ed Schonberg  <schonberg@gnat.com>

        PR ada/15403

        * sem_ch12.adb (Save_References): If operator node has been folded to
        enumeration literal, associated_node must be discarded.

2004-06-11  Jose Ruiz  <ruiz@act-europe.fr>

        * s-stchop-vxworks.adb: Add required pragma Convention to
        Task_Descriptor because it is updated by a C function.

2004-06-08  Arnaud Charlet  <charlet@act-europe.fr>

        PR ada/15568

        * Makefile.in: Remove target specific SO_OPT on IRIX

2004-06-07  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * ada-tree.def (TRANSFORM_EXPR, ALLOCATE_EXPR, USE_EXPR): Deleted.
        (GNAT_NOP_EXPR, GNAT_LOOP_ID, EXPR_STMT, NULL_STMT): Likewise.
        (BLOCK_STMT, IF_STMT, GOTO_STMT, LABEL_STMT, RETURN_STMT): Likewise.
        (ASM_STMT, BREAK_STMT, REGION_STMT,HANDLER_STMT): Likewise.
        (STMT_STMT, USE_STMT): New statement codes.
        (LOOP_STMT, EXIT_STMT): Make slight semantic changes.
        * ada-tree.h: Reflect above changes.
        (struct tree_loop_id): Deleted.
        (union lang_tree_node, struct lang_decl, struct lang_type):
        Now just contains a tree node; update macros using TYPE_LANG_SPECIFIC
        and DECL_LANGUAGE_SPECIFIC to reflect these changes.
        (DECL_INIT_BY_ASSIGN_P, TRE_LOOP_NODE_ID, TREE_SLOC): Deleted.
        (IS_ADA_STMT): New macro.
        * decl.c (annotate_decl_with_node): New function.
        (gnat_to_gnu_entity): Use it and Sloc_to_locus instead of set_lineno.
        (gnat_to_gnu_entity, case object): Remove call to expand CONVERT_EXPR.
        Call add_stmt_with_node to do needed assignments.
        Add call to update setjmp buffer directly, not via EXPR_STMT.
        (maybe_variable): Argment GNAT_NODE deleted.
        * gigi.h (maybe_variable): Likewise.
        (make_transform, add_stmt_with_node, set_block_for_group): New.
        (gnat_gimplify_expr, gnat_expand_body, Sloc_to_locus): Likewise.
        (set_block_jmpbuf_decl, get_block_jmpbuf_decl): Likewise.
        (discard_file_names, gnu_block_stack, gnat_to_code): Deleted.
        (set_lineno, set_lineno_from_sloc): Likewise.
        (record_code_position, insert_code_for): Likewise.
        (gnat_poplevel): Now returns void.
        (end_subprog_body): Now takes argument.
        * misc.c (cgraph.h, tree-inline.h): New includes.
        (gnat_tree_size, LANG_HOOKS_TREE_SIZE): Deleted.
        (gnat_post_options, LANG_HOOKS_POST_OPTIONS): New.
        (LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION): Likewise.
        (LANG_HOOKS_RTL_EXPAND_STMT, LANG_HOOKS_GIMPLIFY_EXPR): Likewise.
        (gnat_parse_file): Don't set immediate_size_expand.
        Call cgraph functions.
        (gnat_expand_expr): Remove most cases.
        (record_code_position, insert_code_for): Remove from here.
        * trans.c (toplev.h, tree-gimple.h): Now included.
        (discard_file_names): Deleted.
        (gnu_block_stack, gnu_block_stmt_node, gnu_block_stmt_free_list): Del.
        (first_nondeleted_insn, make_expr_stmt_from_rtl): Likewise.
        (struct stmt_group, current_stmt_group, stmt_group_free_list): New.
        (gnu_stack_free_list, record_cost_position, insert_code_for): Likewise.
        (add_cleanup, push_stack, gnat_gimplify_stmt, add_cleanup): Likewise.
        (gnat_gimplify_type_sizes, gnat_gimplify_one_sizepos): Likewise.
        (gnat_expand_body_1, gnat_gimplify_expr, annotate_with_node): Likewise.
        (set_block_for_group, add_stmt_list): Likewise.
        (start_stmt_group): Renamed from start_block_stmt.
        (end_stmt_group): Likewise, from end_block_stmt.
        (build_stmt_group): Likewise, from build_block_stmt, also add arg.
        (gigi): Don't set discard_file_names or call set_lineno.
        Disallow front end ZCX; call gnat_to_gnu, not gnat_to_code.
        (tree_transform): Deleted, now renamed to be gnat_to_gnu.
        Numerous changes throughout to reflect new names and complete
        function-at-a-time implementation.
        (gnat_expand_stmt): Delete or comment out all cases.
        (process_inlined_subprograms): Use add_stmt.
        (process_decls): Use gnat_to_gnu, not gnat_to_code, and don't
        call set_lineno; also remove unneeded block handling.
        (process_type): Remove unneeded block handling.
        (build_unit_elab): Remove calls to deleted functions.
        * utils.c (cgraph.h, tree-inline.h, tree-gimple.h): Now include.
        (tree-dump.h): Likewise.
        (struct ada_binding_level): Add field jmpbuf_decl.
        (gnat_define_builtin, gnat_install_builtins): New.
        (gnat_gimplify_function, gnat_finalize): Likewise.
        (gnat_poplevel): No longer return BLOCK, set it instead.
        Remove code dealing with nested functions.
        (gnat_init_decl_processing): Also set size_type_node.
        Call gnat_install_builtins.
        (create_var_decl): Don't set DECL_INIT_BY_ASSIGN.
        (create_subprog_decl): Change handling of inline_flag; set TREE_STATIC.
        Remove special-case for "main".
        (end_subprog_body): Add arg and rework for tree-ssa.
        (convert): Don't use GNAT_NOP_EXPR or look for TRANSFORM_EXPR.
        Add case for BOOLEAN_TYPE.
        * utils2.c (rtl.h): Now include.
        (build_call_raise): Test Debug_Flag_NN directly.
        (build_call_alloc_dealloc): Don't use local stack allocation for now.
        (gnat_mark_addressable, case GNAT_NOP_EXPR): Deleted.
        (gnat_mark_addressable, case VAR_DECL): Handle both early & late cases.

2004-06-07  Robert Dewar  <dewar@gnat.com>

        * a-direct.ads, einfo.ads: Minor comment updates

        * s-taprop-lynxos.adb, s-taprop-tru64.adb, s-taprop-irix.adb,
        s-taprop-irix-athread.adb, s-taprop-hpux-dce.adb, s-taprop-linux.adb,
        s-taprop-dummy.adb, s-taprop-os2.adb, s-taprop-solaris.adb,
        s-taprop-vms.adb, s-taprop-mingw.adb, s-taprop-vxworks.adb,
        s-taprop-posix.adb, s-taprop.ads, exp_dbug.adb: Minor reformatting.

        * s-interr-sigaction.adb: Remove unreferenced variable
        (Attached_Interrupts).  Minor reformatting.
        Avoid use of variable I (replace by J).

        * par-ch10.adb: Fix text of one error message

        * checks.adb, checks.ads, cstand.adb, vms_data.ads, errout.ads,
        exp_aggr.adb, exp_ch3.adb, exp_ch3.ads, exp_ch5.adb, exp_ch6.adb,
        exp_ch9.adb, exp_code.adb, gnat1drv.adb, lib-load.adb, lib-writ.adb,
        opt.adb, par.adb, opt.ads, par-ch11.adb, par-ch3.adb, par-ch4.adb,
        par-ch5.adb, par-ch6.adb, par-ch8.adb, par-ch9.adb, par-prag.adb,
        par-util.adb, scng.adb, sem_aggr.adb, sem_attr.adb, sem_cat.adb,
        sem_ch10.adb, sem_ch10.adb, sem_ch11.adb, sem_ch12.adb, sem_ch2.adb,
        sem_ch3.adb, sem_ch3.ads, sem_ch4.adb, sem_ch5.adb, sem_ch6.adb,
        sem_ch7.adb, sem_ch8.adb, sem_ch9.adb, sem_eval.adb, sem_prag.adb,
        sem_res.adb, sem_type.adb, sem_util.adb, sinfo.ads, snames.adb,
        snames.ads, snames.h, sprint.adb, switch-c.adb: Modifications for Ada
        2005 support.

2004-06-07  Doug Rupp  <rupp@gnat.com>

        * mlib-tgt-vms.adb: Rename mlib-tgt-vms.adb mlib-tgt-vms-alpha.adb

        * s-vaflop-vms.adb: Rename s-vaflop-vms.adb to s-vaflop-vms-alpha.adb

        * mlib-tgt-vms-ia64.adb: New file.

        * Makefile.in: Rename mlib-tgt-vms.adb to mlib-tgt-vms-alpha.adb
        Add mlib-tgt-vms-ia64.adb
        Rename s-vaflop-vms.adb to s-vaflop-vms-alpha.adb.
        Move to alpha specific ifeq section.
        Add VMS specific versions of symbols.adb
        Renaming of 5q vms files.

        * 5qsystem.ads renamed to system-vms_64.ads.

2004-06-07  Vincent Celier  <celier@gnat.com>

        * a-calend.ads: Add a GNAT Note comment after function Time_Of to
        explain that when a time of day corresponding to the non existing hour
        on the day switching to DST is specified, Split may return a different
        value for Seconds.

        * gnatcmd.adb: Add processing of GNAT METRIC (for gnatmetric), similar
        to GNAT PRETTY.

        * g-os_lib.adb (OpenVMS): New Boolean value imported from System.
        (Normalize_Pathname): Only resolve VMS logical names when on VMS.

        * mlib-prj.adb (Build_Library): New flag Gtrasymobj_Needed, initialize
        to False.
        If Gtrasymobj_Needed is True, add the full path of g-trasym.obj to
        the linking options.
        (Build_Library.Check_Libs): On VMS, if there is a dependency on
        g-trasym.ads, set Gtrasymobj_Needed to True.

        * prj-attr.adb: Add new package Metrics for gnatmetric

        * prj-nmsc.adb (Record_Other_Sources): Put source file names in
        canonical case to take into account files with upper case characters on
        Windows.
        (Ada_Check): Load the reference symbol file name in the name buffer to
        check it, not the symbol file name.

        * snames.ads, snames.adb: Add standard name Metrics (name of project
        file package for gnatmetric).

        * vms_conv.ads: Add Metric to Comment_Type

        * vms_conv.adb (Initialize): Add component dor Metric in Command_List

        * vms_data.ads: Add qualifiers for GNAT METRIC

        * makegpr.adb (Link_Executables): Take into account the switches
        specified in package Linker of the main project.

2004-06-07  Thomas Quinot  <quinot@act-europe.fr>

        * bindgen.adb (Set_Unit_Number): Units is an instance of Table, and so
        the index of the last element is Units.Last, not Units.Table'Last
        (which is usually not a valid index within the actually allocated
        storage for the table).

        * exp_ch4.adb (Insert_Dereference_Action): Change predicate that
        determines whether to generate a call to a checked storage pool
        Dereference action.
        Generate such a call only for a dereference that either comes from
        source, or is the result of rewriting a dereference that comes from
        source.

2004-06-07  Romain Berrendonner  <berrendo@act-europe.fr>

        * bindgen.adb (Gen_Output_File): Add support for GAP builds.

2004-06-07  Eric Botcazou  <ebotcazou@act-europe.fr>

        (gnat_to_gnu_entity) <E_Array_Subtype>: For multi-dimensional arrays at
        file level, elaborate the stride for inner dimensions in alignment
        units, not bytes.

        * exp_ch5.adb: Correct wrong reference to Component_May_Be_Bit_Aligned
        in a comment.

2004-06-07  Javier Miranda  <miranda@gnat.com>

        * exp_ch6.adb: Correct wrong modification in previous patch

2004-06-07  Vasiliy Fofanov  <fofanov@act-europe.fr>

        * g-trasym.ads: Corrected comment to properly reflect level of support
        on VMS.

2004-06-07  Hristian Kirtchev  <kirtchev@gnat.com>

        * lib-xref.adb (Generate_Reference): Add nested function Is_On_LHS. It
        includes case of a variable referenced on the left hand side of an
        assignment, therefore remove redundant code. Variables and prefixes of
        indexed or selected components are now marked as referenced on left
        hand side. Warnings are now properly emitted when variables or prefixes
        are assigned but not read.

        * sem_warn.adb (Output_Unreferenced_Messages): Add additional checks to
        left hand side referenced variables. Private access types do not
        produce the warning "variable ... is assigned but never read".
        Add also additional checks to left hand side referenced variables.
        Aliased, renamed objects and access types do not produce the warning
        "variable ... is assigned but never read" since other entities may read
        the memory location.

2004-06-07  Jerome Guitton  <guitton@act-europe.fr>

        * Makefile.in: In the powerpc/vxworks-specific section, restore
        EXTRA_GNATRTL_NONTASKING_OBJS and EXTRA_GNATRTL_TASKING_OBJS (removed
        by mistake).

2004-06-07  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch4.adb (Remove_Abstract_Operations): Refine the removal of
        predefined operators.
        Removes spurious type errors from g-trasym-vms.adb.

        * sem_res.adb (Rewrite_Renamed_Operator): If intrinsic operator is
        distinct from the operator appearing in the source, call appropriate
        routine to insert conversions when needed, and complete resolution of
        node.
        (Resolve_Intrinsic_Operator): Fix cut-and-paste bug on transfer of
        interpretations for rewritten right operand.
        (Set_Mixed_Mode_Operand): Handle properly a universal real operand when
        the other operand is overloaded and the context is a type conversion.

2004-06-07  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * ada-tree.def (BLOCK_STMT): Now has two operands.
        (BREAK_STMT): New.

        * ada-tree.h: (BLOCK_STMT_BLOCK): New macro.

        * gigi.h: (gnat_poplevel): Now returns a tree.

        * trans.c (end_block_stmt): Add arg; all callers changed.
        (tree_transform, case N_Case_Statement): Make a BLOCK_STMT for a WHEN.
        (start_block_stmt): Clear BLOCK_STMT_BLOCK.
        (add_stmt): Set TREE_TYPE.
        (gnat_expand_stmt, case BLOCK_STMT): Handle BLOCK_STMT_BLOCK.
        (gnat_expand_stmt, case BREAK_STMT): New case.

        * utils.c (gnat_poplevel): Return a BLOCK, if we made one.

2004-06-07  Jose Ruiz  <ruiz@act-europe.fr>

        * s-stchop.adsm s-stchop.adb, s-stchop-vxworks.adb: Remove the
        procedure Set_Stack_Size that is not needed.

2004-06-07  Sergey Rybin  <rybin@act-europe.fr>

        * gnat_ugn.texi: Clarify the case when non-standard naming scheme is
        used for gnatpp input file and for the files upon which it depends

2004-06-07  Ben Brosgol  <brosgol@gnat.com>

        * gnat_ugn.texi: Wordsmithing of "GNAT and Libraries" chapter

2004-06-07  Arnaud Charlet  <charlet@act-europe.fr>

        * gnatvsn.ads: Bump version numbers appropriately.
        Add new build type.

2004-06-07  Pascal Obry  <obry@gnat.com>

        * gnat_ugn.texi: Improve comments about imported names and link names
        on Windows. Add a note about the requirement to use -k gnatdll's option
        when working with a DLL which has stripped stdcall symbols (no @nn
        suffix).

2004-05-27  Vincent Celier  <celier@gnat.com>

        * vms_data.ads: Add new GNAT PRETTY qualifiers /NO_BACKUP and
        COMMENTS_LAYOUT=UNTOUCHED

        * symbols-vms.adb, symbols-vms-alpha.adb: Renamed symbols-vms.adb to
        symbols-vms-alpha.adb

2004-05-27  Thomas Quinot  <quinot@act-europe.fr>

        * sem.ads: Clarify documentation on checks suppression.

        * einfo.ads (Is_Known_Non_Null): Minor comment typo fix and rephrasing.

2004-05-27  Ed Schonberg  <schonberg@gnat.com>

        * sem_util.adb (Is_Descendent_Of): Examine properly all ancestors in
        the case of multiple derivations.
        (Is_Object_Reference): For a selected component, verify that the prefix
        is itself an object and not a value.

        * sem_ch12.adb (Same_Instantiated_Constant): New name for
        Same_Instantiated_Entity.
        (Same_Instantiated_Variable): Subsidiary to
        Check_Formal_Package_Instance, to recognize actuals for in-out generic
        formals that are obtained from a previous formal package.
        (Instantiate_Subprogram_Body): Emit proper error when
        generating code and the proper body of a stub is missing.

        * sem_ch4.adb (Remove_Address_Interpretations): If the operation still
        has a universal interpretation, do the disambiguation here.

        * exp_ch4.adb (Expand_N_Type_Conversion,
        Expand_N_Unchecked_Type_Conversion): Special handling when target type
        is Address, to avoid typing anomalies when Address is a visible integer
        type.

        * exp_ch6.adb (Expand_N_Subprogram_Body): Use Is_Descendent_Of_Address
        to determine whether a subprogram should not be marked Pure, even when
        declared in a pure package.

2004-05-27  Jose Ruiz  <ruiz@act-europe.fr>

        * gnat_ugn.texi: Replace pragma Ravenscar by pragma Profile.

        * gnat_rm.texi: Replace Max_Entry_Queue_Depth by Max_Entry_Queue_Length
        Document No_Dynamic_Attachment, that supersedes No_Dynamic_Interrupts.
        Update the documentation about the Ravenscar profile, following the
        definition found in AI-249.

        * sem_prag.adb: Use FIFO_Within_Priorities and Ceiling_Locking when
        setting the Profile (Ravenscar). This must be done in addition to
        setting the required restrictions.

        * rtsfind.ads: Add the set of operations defined in package
        Ada.Interrupts.

        * exp_ch6.adb: Check whether we are violating the No_Dynamic_Attachment
        restriction.

2004-05-27  Eric Botcazou  <ebotcazou@act-europe.fr>

        lang-specs.h: Always require -c or -S and always redirect to /dev/null
        if -gnatc or -gnats is passed.

2004-05-27  Hristian Kirtchev  <kirtchev@gnat.com>

        * sem_prag.adb (Sig_Flags): A Pragma_Unchecked_Union does not count as
        a significant reference. Warnings are now properly emitted when a
        discriminated type is not referenced.

        * lib-xref.adb (Generate_Reference): A deferred constant completion,
        record representation clause or record type discriminant does not
        produce a reference to its corresponding entity. Warnings are now
        properly emitted when deferred constants and record types are not
        referenced.

2004-05-27  Geert Bosch  <bosch@gnat.com>

        * Makefile.in: Use long version of libm routines on ia64 gnu/linux.
        Fixes ACATS Annex G tests.

2004-05-27  Robert Dewar  <dewar@gnat.com>

        * rtsfind.adb (RTU_Loaded): Temporary kludge to get past bug of not
        handling WITH

2004-05-27  Arnaud Charlet  <charlet@act-europe.fr>

        * s-interr.adb (Server_Task): Take into account case of early return
        from sigwait under e.g. linux.

2004-05-27  Sergey Rybin  <rybin@act-europe.fr>

        * gnat_ugn.texi: Add description for the new gnatpp options:
         -rnb - replace the original source without creating its backup copy
         -c0 - do not format comments

2004-05-24  Geert Bosch  <bosch@gnat.com>

        * a-numaux-x86.adb (Reduce): Reimplement using an approximation of Pi
        with 192 bits of precision, sufficient to reduce a double-extended
        arguments X with a maximum relative error of T'Machine_Epsilon, for X
        in -2.0**32 .. 2.0**32.
        (Cos, Sin):  Always reduce arguments of 1/4 Pi or larger, to prevent
        reduction by the processor, which only uses a 68-bit approximation of
        Pi.
        (Tan): Always reduce arguments and compute function either using
        the processor's fptan instruction, or by dividing sin and cos as needed.

2004-05-24  Doug Rupp  <rupp@gnat.com>

        * adaint.c (__gnat_readdir): Cast CRTL function retun value to avoid
        gcc error on 32/64 bit VMS.

2004-05-24  Olivier Hainque  <hainque@act-europe.fr>

        * init.c (__gnat_error_handler): Handle EEXIST as EACCES for SIGSEGVs,
        since this is what we get for stack overflows although not documented
        as such.
        Document the issues which may require adjustments to our signal
        handlers.

2004-05-24  Ed Schonberg  <schonberg@gnat.com>

        * inline.adb (Add_Scope_To_Clean): Do not add cleanup actions to the
        enclosing dynamic scope if the instantiation is within a generic unit.

2004-05-24  Arnaud Charlet  <charlet@act-europe.fr>

        * exp_dbug.ads: Fix typo.

        * Makefile.in: s-osinte-linux-ia64.ads was misnamed.
        Rename it to its proper name: system-linux-ia64.ads
        (stamp-gnatlib1): Remove extra target specific run time files when
        setting up the rts directory.

2004-05-24  Javier Miranda  <miranda@gnat.com>

        * einfo.ads, einfo.adb (Limited_Views): Removed.
        (Limited_View): New attribute that replaces the previous one. It is
        now a bona fide package with the limited-view list through the
        first_entity and first_private attributes.

        * sem_ch10.adb (Install_Private_With_Clauses): Give support to
        limited-private-with clause.
        (Install_Limited_Withed_Unit): Install the private declarations of a
        limited-private-withed package. Update the installation of the shadow
        entities according to the new structure (see Build_Limited_Views)
        (Build_Limited_Views): Replace the previous implementation of the
        limited view by a package entity that references the first shadow
        entity plus the first shadow private entity (required for limited-
        private-with clause)
        (New_Internal_Shadow_Entity): Code cleanup.
        (Remove_Limited_With_Clause): Update the implementation to undo the
        new work carried out by Build_Limited_Views.
        (Build_Chain): Complete documentation.
        Replace Ada0Y by Ada 0Y in comments
        Minor reformating

        * sem_ch3.adb (Array_Type_Declaration): In case of anonymous access
        types the level of accessibility depends on the enclosing type
        declaration.

        * sem_ch8.adb (Find_Expanded_Name): Fix condition to detect shadow
        entities. Complete documentation of previous change.

2004-05-24  Robert Dewar  <dewar@gnat.com>

        * namet.adb: Minor reformatting
        Avoid use of name I (replace by J)
        Minor code restructuring

        * sem_ch6.adb: Minor reformatting

        * lib-writ.adb: Do not set restriction as active if this is a
        Restriction_Warning case.

        * sem_prag.adb: Reset restriction warning flag if real pragma
        restriction encountered.

        * s-htable.adb: Minor reformatting
        Change rotate count to 3 in Hash (improves hash for small strings)

        * 5qsystem.ads: Add comments for type Address (no literals allowed).

        * gnat_ugn.texi: Add new section of documentation "Code Generation
        Control", which describes the use of -m switches.

2004-05-24  Eric Botcazou  <ebotcazou@act-europe.fr>

        trans.c (tree_transform) <N_Identifier>: Do the dereference directly
        through the DECL_INITIAL for renamed variables.

2004-05-24  Arnaud Charlet  <charlet@act-europe.fr>

        * s-osinte-linux-ia64.ads: Renamed system-linux-ia64.ads

2004-05-19  Joel Brobecker  <brobecker@gnat.com>

        * exp_dbug.ads: Correct comments concerning handling of overloading,
        since we no longer use $ anymore.

2004-05-19  Sergey Rybin  <rybin@act-europe.fr>

        * sem_ch10.adb (Optional_Subunit): When loading a subunit, do not
        ignore errors if ASIS_Mode is set. This prevents creating ASIS trees
        with illegal subunits.

2004-05-19  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch6.adb (Check_Following_Pragma): When compiling a subprogram
        body with front-end inlining enabled, check whether an inline pragma
        appears immediately after the body and applies to it.

        * sem_prag.adb (Cannot_Inline): Emit warning if front-end inlining is
        enabled and the pragma appears after the body of the subprogram.

2004-05-17  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        Part of function-at-a-time conversion

        * misc.c (adjust_decl_rtl): Deleted.
        (LANG_HOOKS_PUSHLEVEL, LANG_HOOKS_POPLEVEL, LANG_HOOKS_SET_BLOCK):
        Define.

        * gigi.h: (adjust_decl_rtl, kept_level_p, set_block): Deleted.
        (add_decl_stmt, add_stmt, block_has_vars): New functions.
        (gnat_pushlevel, gnat_poplevel): Renamed from pushlevel and poplevel.

        * decl.c (elaborate_expression, maybe_pad_type): Call add_decl_stmt
        when making a decl.
        (gnat_to_gnu_entity): Likewise.
        Use add_stmt to update setjmp buffer.
        Set TREE_ADDRESSABLE instead of calling put_var_into_stack and
        flush_addressof.
        No longer call adjust_decl_rtl.
        (DECL_INIT_BY_ASSIGN_P): New macro.
        (DECL_STMT_VAR): Likewise.

        * trans.c (gigi): Call start_block_stmt to make the outermost
        BLOCK_STMT.
        (gnat_to_code, gnu_to_gnu, tree_transform, process_decls, process_type):
        Call start_block_stmt and end_block_stmt temporarily.
        Use gnat_expand_stmt instead of expand_expr_stmt.
        (add_decl_stmt): New function.
        (tree_transform): Call it.
        (add_stmt): Also emit initializing assignment for DECL_STMT if needed.
        (end_block_stmt): Set type and NULL_STMT.
        (gnat_expand_stmt): Make recursize call instead of calling
        expand_expr_stmt.
        (gnat_expand_stmt, case DECL_STMT): New case.
        (set_lineno_from_sloc): Do nothing if global.
        (gnu_block_stmt_node, gnu_block_stmt_free_list): New variables.
        (start_block_stmt, add_stmt, end_block_stmt): New functions.
        (build_block_stmt): Call them.
        (gnat_to_code): Don't expand NULL_STMT.
        (build_unit_elab): Rename pushlevel and poplevel to gnat_* and change
        args.
        (tree_transform): Likewise.
        (tree_transform, case N_Null_Statement): Return NULL_STMT.
        (gnat_expand_stmt, case NULL_STMT): New case.
        (gnat_expand_stmt, case IF_STMT): Allow nested IF_STMT to have no
        IF_STMT_TRUE.

        * utils2.c (gnat_mark_addressable, case VAR_DECL): Do not set
        TREE_ADDRESSABLE.

        * utils.c (create_var_decl): Do not call expand_decl or
        expand_decl_init.
        Set TREE_ADDRESSABLE instead of calling gnat_mark_addressable.
        Set DECL_INIT_BY_ASSIGN_P when needed and do not generate MODIFY_EXPR
        here.
        (struct e_stack): Add chain_next to GTY.
        (struct binding_level): Deleted.
        (struct ada_binding_level): New struct.
        (free_block_chain): New.
        (global_binding_level, clear_binding_level): Deleted.
        (global_bindings_p): Rework to see if no chain.
        (kept_level_p, set_block): Deleted.
        (gnat_pushlevel): Renamed from pushlevel and extensive reworked to use
        new data structure and work directly on BLOCK node.
        (gnat_poplevel): Similarly.
        (get_decls): Look at BLOCK_VARS.
        (insert_block): Work directly on BLOCK node.
        (block_has_var): New function.
        (pushdecl): Rework for new binding structures.
        (gnat_init_decl_processing): Rename and rework calls to pushlevel and
        poplevel.
        (build_subprog_body): Likewise.
        (end_subprog_body): Likewise; also set up BLOCK in DECL_INITIAL.

        * ada-tree.def (DECL_STMT, NULL_STMT): New codes.

        * ada-tree.h: (DECL_INIT_BY_ASSIGN_P): New macro.
        (DECL_STMT_VAR): Likewise.

2004-05-17  Robert Dewar  <dewar@gnat.com>

        * restrict.ads, restrict.adb (Process_Restriction_Synonym): New
        procedure

        * sem_prag.adb (Analyze_Pragma, case Restrictions): Cleanup handling
        of restriction synonyums by using
        Restrict.Process_Restriction_Synonyms.

        * snames.ads, snames.adb: Add entries for Process_Restriction_Synonym

        * s-restri.ads (Tasking_Allowed): Correct missing comment

        * s-rident.ads: Add entries for restriction synonyms

        * ali.adb: Fix some problems with badly formatted ALI files that can
        result in infinite loops.

        * s-taprop-lynxos.adb, s-tpopsp-lynxos.adb, s-taprop-tru64.adb,
        s-tpopsp-posix-foreign.adb, s-taprop-irix.adb, s-interr-sigaction.adb,
        s-taprop-irix-athread.adb, s-taprop-hpux-dce.adb, s-taprop-linux.adb,
        s-taprop-dummy.adb, s-interr-dummy.adb, s-taprop-os2.adb,
        s-taprop-solaris.adb, s-tpopsp-solaris.adb, s-asthan-vms.adb,
        s-inmaop-vms.adb, s-interr-vms.adb, s-taprop-vms.adb,
        s-tpopde-vms.adb, s-taprop-mingw.adb, s-interr-vxworks.adb,
        s-taprop-vxworks.adb, s-tpopsp-vxworks.adb, s-taprop-posix.adb,
        s-tpopsp-posix.adb, s-tratas-default.adb, a-dynpri.adb,
        a-tasatt.adb, a-taside.adb, a-taside.ads, exp_attr.adb,
        exp_ch9.adb, g-thread.adb, rtsfind.ads, sem_attr.adb,
        s-interr.adb, s-interr.ads, s-soflin.ads, s-taasde.adb,
        s-taasde.ads, s-taenca.adb, s-taenca.ads, s-taprop.ads,
        s-tarest.adb, s-tarest.ads, s-tasdeb.adb, s-tasdeb.ads,
        s-tasini.adb, s-tasini.ads, s-taskin.adb, s-taskin.ads,
        s-tasque.adb, s-tasque.ads, s-tasren.adb, s-tasren.ads,
        s-tassta.adb, s-tassta.ads, s-tasuti.adb, s-tasuti.ads,
        s-tataat.adb, s-tataat.ads, s-tpinop.adb, s-tpinop.ads,
        s-tpoben.adb, s-tpobop.adb, s-tpobop.ads, s-tporft.adb,
        s-tposen.adb, s-tposen.ads, s-tratas.adb, s-tratas.ads: Change Task_ID
        to Task_Id (minor cleanup).

2004-05-17  Vincent Celier  <celier@gnat.com>

        * g-os_lib.adb (Normalize_Pathname.Final_Value): Remove trailing
        directory separator.

        * prj-proc.adb (Recursive_Process): Inherit attribute Languages from
        project being extended, if Languages is not declared in extending
        project.

2004-05-17  Javier Miranda  <miranda@gnat.com>

        * sem_ch10.adb (Install_Limited_Withed_Unit): Do not install the
        limited view of a visible sibling.

2004-05-14  Robert Dewar  <dewar@gnat.com>

        * gnat_ugn.texi: Minor change to -gnatS documentation

        * sprint.adb: Remove some instances of Assert (False) and for this
        purpose replace them by output of a ??? string.

        * checks.adb, exp_aggr.adb, sem_elim.adb: Remove useless pragma
        Assert (False).

        * lib-writ.adb, lib-load.adb, lib.ads, lib.adb: Remove Dependent_Unit
        flag processing. This was suppressing required dependencies in
        No_Run_Time mode and is not needed since the binder does not generate
        references for things in libgnat anyway.

        * sem_ch3.adb (Access_Type_Declaration): Reorganize code to avoid GCC
        warning.

2004-05-14  Thomas Quinot  <quinot@act-europe.fr>

        * gnat_ugn.texi: Document AIX-specific issue with initialization of
        resolver library.

        * exp_ch4.adb (Insert_Dereference_Action): Do not generate dereference
        action for the case of an actual parameter in an init proc call.

2004-05-14  Ed Schonberg  <schonberg@gnat.com>

        * sem_ch4.adb (Analyze_Selected_Component): If prefix is a protected
        subtype, check visible entities in base type.

        * exp_ch7.adb (Clean_Simple_Protected_Objects): Do not generate cleanup
        actions if the object is a renaming.

        * sem_ch12.adb (Same_Instantiated_Entity): Predicate for
        Check_Formal_Package_Instance, to determine more precisely when the
        formal and the actual denote the same entity.

2004-05-14  Javier Miranda  <miranda@gnat.com>

        * par-ch10.adb (P_Context_Clause): Complete documentation on AI-262