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[multiple changes]
2015-05-12 Robert Dewar <dewar@adacore.com> * sem_util.adb (Is_Variable): Allow X'Deref(Y) as a variable. 2015-05-12 Ed Schonberg <schonberg@adacore.com> * sem_ch8.adb (Find_Expanded_Name): Handle properly a fully qualified name for an instance of a generic grand-child unit in the body its parent. 2015-05-12 Robert Dewar <dewar@adacore.com> * exp_unst.adb (Upref_Name): New subprogram. (Unnest_Subprogram): Use Upref_Name. (Unnest_Subprogram): Use new Deref attribute. * exp_unst.ads: Doc updates. 2015-05-12 Thomas Quinot <quinot@adacore.com> * adaint.c: Enable Large File Support in adaint so that __gnat_readdir can access files on filesystems mounted from servers that use large NFS file handles. From-SVN: r223035
This commit is contained in:
Arnaud Charlet
parent
3a857fd0d3
commit
ddbc55d8ad
@ -1,3 +1,26 @@
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2015-05-12 Robert Dewar <dewar@adacore.com>
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* sem_util.adb (Is_Variable): Allow X'Deref(Y) as a variable.
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2015-05-12 Ed Schonberg <schonberg@adacore.com>
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* sem_ch8.adb (Find_Expanded_Name): Handle properly a fully
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qualified name for an instance of a generic grand-child unit in
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the body its parent.
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2015-05-12 Robert Dewar <dewar@adacore.com>
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* exp_unst.adb (Upref_Name): New subprogram.
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(Unnest_Subprogram): Use Upref_Name.
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(Unnest_Subprogram): Use new Deref attribute.
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* exp_unst.ads: Doc updates.
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2015-05-12 Thomas Quinot <quinot@adacore.com>
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* adaint.c: Enable Large File Support in adaint so that __gnat_readdir
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can access files on filesystems mounted from servers that use large
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NFS file handles.
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2015-05-09 Eric Botcazou <ebotcazou@adacore.com>
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* gcc-interface/utils.c (gnat_write_global_declarations): Use type_decl
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@ -38,6 +38,12 @@
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#define _REENTRANT
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#define _THREAD_SAFE
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/* Use 64 bit Large File API */
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#ifndef _LARGEFILE_SOURCE
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#define _LARGEFILE_SOURCE
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#endif
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#define _FILE_OFFSET_BITS 64
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#ifdef __vxworks
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/* No need to redefine exit here. */
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@ -26,7 +26,6 @@
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with Atree; use Atree;
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with Einfo; use Einfo;
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with Elists; use Elists;
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with Exp_Util; use Exp_Util;
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with Lib; use Lib;
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with Namet; use Namet;
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with Nlists; use Nlists;
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@ -358,6 +357,14 @@ package body Exp_Unst is
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function Subp_Index (Sub : Entity_Id) return SI_Type;
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-- Given the entity for a subprogram, return corresponding Subps index
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function Upref_Name (Ent : Entity_Id) return Name_Id;
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-- This function returns the name to be used in the activation record to
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-- reference the variable uplevel. Normally this is just a copy of the
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-- Chars field of the entity. The exception is when the scope of Ent
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-- is a declare block, in which case we append the entity number to
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-- make sure that no confusion occurs between use of the same name
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-- in different declare blocks.
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----------------
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-- Actual_Ref --
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----------------
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@ -445,6 +452,23 @@ package body Exp_Unst is
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return SI_Type (UI_To_Int (Subps_Index (Sub)));
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end Subp_Index;
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----------------
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-- Upref_Name --
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----------------
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function Upref_Name (Ent : Entity_Id) return Name_Id is
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begin
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if Ekind (Scope (Ent)) /= E_Block then
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return Chars (Ent);
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else
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Get_Name_String (Chars (Ent));
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Add_Str_To_Name_Buffer ("__");
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Add_Nat_To_Name_Buffer (Nat (Ent));
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return Name_Enter;
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end if;
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end Upref_Name;
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-- Start of processing for Unnest_Subprogram
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begin
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@ -913,7 +937,7 @@ package body Exp_Unst is
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for J in 1 .. Num_Uplevel_Entities loop
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Comp :=
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Make_Defining_Identifier (Loc,
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Chars => Chars (Uplevel_Entities (J)));
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Chars => Upref_Name (Uplevel_Entities (J)));
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Set_Activation_Record_Component
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(Uplevel_Entities (J), Comp);
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@ -1029,7 +1053,7 @@ package body Exp_Unst is
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end if;
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-- Build and insert the assignment:
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-- ARECn.nam := nam
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-- ARECn.nam := nam'Address
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Asn :=
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Make_Assignment_Statement (Loc,
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@ -1038,7 +1062,9 @@ package body Exp_Unst is
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Prefix =>
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New_Occurrence_Of (STJ.ARECn, Loc),
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Selector_Name =>
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Make_Identifier (Loc, Chars (Ent))),
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New_Occurrence_Of
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(Activation_Record_Component (Ent),
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Loc)),
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Expression =>
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Make_Attribute_Reference (Loc,
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@ -1124,11 +1150,6 @@ package body Exp_Unst is
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STJR : Subp_Entry renames Subps.Table (RSX);
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-- Subp_Entry for enclosing subprogram for ref
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Tnn : constant Entity_Id :=
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Make_Temporary
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(Loc, 'T', Related_Node => Ref);
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-- Local pointer type for reference
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Pfx : Node_Id;
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Comp : Entity_Id;
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SI : SI_Type;
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@ -1141,28 +1162,15 @@ package body Exp_Unst is
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Push_Scope (STJR.Ent);
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-- First insert declaration for pointer type
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-- type Tnn is access all typ;
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Insert_Action (Node (Elmt),
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Make_Full_Type_Declaration (Loc,
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Defining_Identifier => Tnn,
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Type_Definition =>
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Make_Access_To_Object_Definition (Loc,
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All_Present => True,
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Subtype_Indication =>
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New_Occurrence_Of (Typ, Loc))));
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-- Now we need to rewrite the reference. We have a
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-- reference is from level STJE.Lev to level STJ.Lev.
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-- The general form of the rewritten reference for
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-- entity X is:
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-- Tnn!(ARECaF.ARECbU.ARECcU.ARECdU....ARECm.X).all
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-- Typ'Deref (ARECaF.ARECbU.ARECcU.ARECdU....ARECm.X)
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-- where a,b,c,d .. m =
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-- STJR.Lev - 1, STJ.Lev - 2, .. STJ.Lev
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-- STJR.Lev - 1, STJ.Lev - 2, .. STJ.Lev
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pragma Assert (STJR.Lev > STJ.Lev);
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@ -1206,13 +1214,14 @@ package body Exp_Unst is
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-- Do the replacement
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Rewrite (Ref,
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Make_Explicit_Dereference (Loc,
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Prefix =>
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Unchecked_Convert_To (Tnn,
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Make_Selected_Component (Loc,
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Prefix => Pfx,
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Selector_Name =>
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New_Occurrence_Of (Comp, Loc)))));
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Make_Attribute_Reference (Loc,
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Prefix => New_Occurrence_Of (Typ, Loc),
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Attribute_Name => Name_Deref,
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Expressions => New_List (
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Make_Selected_Component (Loc,
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Prefix => Pfx,
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Selector_Name =>
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New_Occurrence_Of (Comp, Loc)))));
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-- Analyze and resolve the new expression. We do not
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-- need to establish the relevant scope stack entries
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@ -187,15 +187,18 @@ package Exp_Unst is
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-- outer level of nesting. As we will see later, deeper levels of nesting
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-- will use AREC2, AREC3, ...
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-- Note: normally the field names in the activation record match the
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-- name of the entity. An exception is when the entity is declared in
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-- a declare block, in which case we append the entity number, to avoid
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-- clashes between the same name declared in different declare blocks.
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-- For all subprograms nested immediately within the corresponding scope,
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-- a parameter AREC1F is passed, and all calls to these routines have
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-- AREC1P added as an additional formal.
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-- Now within the nested procedures, any reference to an uplevel entity
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-- xxx is replaced by Tnn!(AREC1.xxx).all (where ! represents a call
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-- to unchecked conversion to convert the address to the access type
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-- and Tnn is a locally declared type that is "access all t", where t
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-- is the type of the reference).
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-- xxx is replaced by typ'Deref(AREC1.xxx) where typ is the type of the
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-- reference.
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-- Note: the reason that we use Address as the component type in the
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-- declaration of AREC1T is that we may create this type before we see
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@ -233,11 +236,8 @@ package Exp_Unst is
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--
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-- procedure inner (bb : integer; AREC1F : AREC1PT) is
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-- begin
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-- type Tnn1 is access all Integer;
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-- type Tnn2 is access all Integer;
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-- type Tnn3 is access all Integer;
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-- Tnn1!(AREC1F.x).all :=
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-- Tnn2!(AREC1F.rv).all + y + b + Tnn3!(AREC1F.b).all;
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-- Integer'Deref(AREC1F.x) :=
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-- Integer'Deref(AREC1F.rv) + y + b + Integer_Deref(AREC1F.b);
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-- end;
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--
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-- begin
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@ -388,8 +388,7 @@ package Exp_Unst is
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--
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-- function inner (b : integer; AREC1F : AREC1PT) return boolean is
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-- begin
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-- type Tnn is access all Integer
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-- return b in x .. Tnn!(AREC1F.dynam_LAST).all
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-- return b in x .. Integer'Deref(AREC1F.dynam_LAST)
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-- and then darecv.b in 42 .. 73;
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-- end inner;
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--
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@ -440,23 +439,20 @@ package Exp_Unst is
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-- type AREC2PT is access all AREC2T;
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-- AREC2P : constant AREC2PT := AREC2'Access;
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--
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-- type Tnn1 is access all Integer;
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-- v2 : integer := Tnn1!(AREC1F.v1).all {+} 1;
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-- v2 : integer := Integer'Deref (AREC1F.v1) {+} 1;
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-- AREC2.v2 := v2'Address;
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--
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-- function inner2
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-- (z : integer; AREC2F : AREC2PT) return integer
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-- is
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-- begin
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-- type Tnn1 is access all Integer;
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-- type Tnn2 is access all Integer;
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-- return integer(z {+}
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-- Tnn1!(AREC2F.AREC1U.v1).all {+}
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-- Tnn2!(AREC2F.v2).all);
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-- Integer'Deref (AREC2F.AREC1U.v1) {+}
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-- Integer'Deref (AREC2F.v2).all);
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-- end inner2;
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-- begin
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-- type Tnn is access all Integer;
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-- return integer(y {+} inner2 (Tnn!(AREC1F.v1).all, AREC2P));
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-- return integer(y {+}
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-- inner2 (Integer'Deref (AREC1F.v1), AREC2P));
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-- end inner1;
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-- begin
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-- return inner1 (x, AREC1P);
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@ -5791,8 +5791,19 @@ package body Sem_Ch8 is
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end if;
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if Is_New_Candidate then
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-- If entity is a child unit, either it is a visible child of
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-- the prefix, or we are in the body of a generic prefix, as
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-- will happen when a child unit is instantiated in the body
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-- of a generic parent. This is because the instance body does
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-- not restore the full compilation context, given that all
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-- non-local references have been captured.
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if Is_Child_Unit (Id) or else P_Name = Standard_Standard then
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exit when Is_Visible_Lib_Unit (Id);
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exit when Is_Visible_Lib_Unit (Id)
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or else (Is_Child_Unit (Id)
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and then In_Open_Scopes (Scope (Id))
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and then In_Instance_Body);
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else
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exit when not Is_Hidden (Id);
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end if;
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@ -12771,6 +12771,14 @@ package body Sem_Util is
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-- Start of processing for Is_Variable
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begin
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-- Special check, allow x'Deref(expr) as a variable
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if Nkind (N) = N_Attribute_Reference
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and then Attribute_Name (N) = Name_Deref
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then
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return True;
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end if;
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-- Check if we perform the test on the original node since this may be a
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-- test of syntactic categories which must not be disturbed by whatever
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-- rewriting might have occurred. For example, an aggregate, which is
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@ -16855,7 +16863,7 @@ package body Sem_Util is
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and then Has_Foreign_Convention (E)
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then
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-- A convention pragma in an instance may apply to the subtype
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-- A pragma Convention in an instance may apply to the subtype
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-- created for a formal, in which case we have already verified
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-- that conventions of actual and formal match and there is nothing
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-- to flag on the subtype.
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