-- --
-- B o d y --
-- --
--- Copyright (C) 1997-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1997-2009, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
+-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
--- Boston, MA 02110-1301, USA. --
+-- Public License distributed with GNAT; see file COPYING3. If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
with Sem_Ch7; use Sem_Ch7;
with Sem_Ch8; use Sem_Ch8;
with Sem_Res; use Sem_Res;
+with Sem_Type; use Sem_Type;
with Sem_Util; use Sem_Util;
with Sinfo; use Sinfo;
with Sinput; use Sinput;
package body Sem_Elab is
- -- The following table records the recursive call chain for output
- -- in the Output routine. Each entry records the call node and the
- -- entity of the called routine. The number of entries in the table
- -- (i.e. the value of Elab_Call.Last) indicates the current depth
- -- of recursion and is used to identify the outer level.
+ -- The following table records the recursive call chain for output in the
+ -- Output routine. Each entry records the call node and the entity of the
+ -- called routine. The number of entries in the table (i.e. the value of
+ -- Elab_Call.Last) indicates the current depth of recursion and is used to
+ -- identify the outer level.
type Elab_Call_Entry is record
Cloc : Source_Ptr;
Table_Increment => 100,
Table_Name => "Elab_Call");
- -- This table is initialized at the start of each outer level call.
- -- It holds the entities for all subprograms that have been examined
- -- for this particular outer level call, and is used to prevent both
- -- infinite recursion, and useless reanalysis of bodies already seen
+ -- This table is initialized at the start of each outer level call. It
+ -- holds the entities for all subprograms that have been examined for this
+ -- particular outer level call, and is used to prevent both infinite
+ -- recursion, and useless reanalysis of bodies already seen
package Elab_Visited is new Table.Table (
Table_Component_Type => Entity_Id,
Table_Name => "Delay_Check");
C_Scope : Entity_Id;
- -- Top level scope of current scope. We need to compute this only
- -- once at the outer level, i.e. for a call to Check_Elab_Call from
- -- outside this unit.
+ -- Top level scope of current scope. Compute this only once at the outer
+ -- level, i.e. for a call to Check_Elab_Call from outside this unit.
Outer_Level_Sloc : Source_Ptr;
-- Save Sloc value for outer level call node for comparisons of source
Delaying_Elab_Checks : Boolean := True;
-- This is set True till the compilation is complete, including the
- -- insertion of all instance bodies. Then when Check_Elab_Calls is
- -- called, the delay table is used to make the delayed calls and
- -- this flag is reset to False, so that the calls are processed
+ -- insertion of all instance bodies. Then when Check_Elab_Calls is called,
+ -- the delay table is used to make the delayed calls and this flag is reset
+ -- to False, so that the calls are processed
-----------------------
-- Local Subprograms --
Outer_Scope : Entity_Id;
Inter_Unit_Only : Boolean;
Generate_Warnings : Boolean := True);
- -- This is the internal recursive routine that is called to check for
- -- a possible elaboration error. The argument N is a subprogram call
- -- or generic instantiation to be checked, and E is the entity of
- -- the called subprogram, or instantiated generic unit. The flag
- -- Outer_Scope is the outer level scope for the original call.
- -- Inter_Unit_Only is set if the call is only to be checked in the
- -- case where it is to another unit (and skipped if within a unit).
- -- Generate_Warnings is set to False to suppress warning messages
- -- about missing pragma Elaborate_All's. These messages are not
- -- wanted for inner calls in the dynamic model.
+ -- This is the internal recursive routine that is called to check for a
+ -- possible elaboration error. The argument N is a subprogram call or
+ -- generic instantiation to be checked, and E is the entity of the called
+ -- subprogram, or instantiated generic unit. The flag Outer_Scope is the
+ -- outer level scope for the original call. Inter_Unit_Only is set if the
+ -- call is only to be checked in the case where it is to another unit (and
+ -- skipped if within a unit). Generate_Warnings is set to False to suppress
+ -- warning messages about missing pragma Elaborate_All's. These messages
+ -- are not wanted for inner calls in the dynamic model.
procedure Check_Bad_Instantiation (N : Node_Id);
-- N is a node for an instantiation (if called with any other node kind,
E : Entity_Id;
Outer_Scope : Entity_Id;
Orig_Ent : Entity_Id);
- -- N is a function call or procedure statement call node and E is
- -- the entity of the called function, which is within the current
- -- compilation unit (where subunits count as part of the parent).
- -- This call checks if this call, or any call within any accessed
- -- body could cause an ABE, and if so, outputs a warning. Orig_Ent
- -- differs from E only in the case of renamings, and points to the
- -- original name of the entity. This is used for error messages.
- -- Outer_Scope is the outer level scope for the original call.
+ -- N is a function call or procedure statement call node and E is the
+ -- entity of the called function, which is within the current compilation
+ -- unit (where subunits count as part of the parent). This call checks if
+ -- this call, or any call within any accessed body could cause an ABE, and
+ -- if so, outputs a warning. Orig_Ent differs from E only in the case of
+ -- renamings, and points to the original name of the entity. This is used
+ -- for error messages. Outer_Scope is the outer level scope for the
+ -- original call.
procedure Check_Internal_Call_Continue
(N : Node_Id;
-- The processing for Check_Internal_Call is divided up into two phases,
-- and this represents the second phase. The second phase is delayed if
-- Delaying_Elab_Calls is set to True. In this delayed case, the first
- -- phase makes an entry in the Delay_Check table, which is processed
- -- when Check_Elab_Calls is called. N, E and Orig_Ent are as for the call
- -- to Check_Internal_Call. Outer_Scope is the outer level scope for
- -- the original call.
+ -- phase makes an entry in the Delay_Check table, which is processed when
+ -- Check_Elab_Calls is called. N, E and Orig_Ent are as for the call to
+ -- Check_Internal_Call. Outer_Scope is the outer level scope for the
+ -- original call.
procedure Set_Elaboration_Constraint
(Call : Node_Id;
-- inevitable, given the optional body semantics of Ada).
procedure Insert_Elab_Check (N : Node_Id; C : Node_Id := Empty);
- -- Given code for an elaboration check (or unconditional raise if
- -- the check is not needed), inserts the code in the appropriate
- -- place. N is the call or instantiation node for which the check
- -- code is required. C is the test whose failure triggers the raise.
+ -- Given code for an elaboration check (or unconditional raise if the check
+ -- is not needed), inserts the code in the appropriate place. N is the call
+ -- or instantiation node for which the check code is required. C is the
+ -- test whose failure triggers the raise.
procedure Output_Calls (N : Node_Id);
- -- Outputs chain of calls stored in the Elab_Call table. The caller
- -- has already generated the main warning message, so the warnings
- -- generated are all continuation messages. The argument is the
- -- call node at which the messages are to be placed.
+ -- Outputs chain of calls stored in the Elab_Call table. The caller has
+ -- already generated the main warning message, so the warnings generated
+ -- are all continuation messages. The argument is the call node at which
+ -- the messages are to be placed.
function Same_Elaboration_Scope (Scop1, Scop2 : Entity_Id) return Boolean;
-- Given two scopes, determine whether they are the same scope from an
-- to be the enclosing compilation unit of this scope.
function Spec_Entity (E : Entity_Id) return Entity_Id;
- -- Given a compilation unit entity, if it is a spec entity, it is
- -- returned unchanged. If it is a body entity, then the spec for
- -- the corresponding spec is returned
+ -- Given a compilation unit entity, if it is a spec entity, it is returned
+ -- unchanged. If it is a body entity, then the spec for the corresponding
+ -- spec is returned
procedure Supply_Bodies (N : Node_Id);
-- Given a node, N, that is either a subprogram declaration or a package
-- declaration, this procedure supplies dummy bodies for the subprogram
-- or for all subprograms in the package. If the given node is not one
-- of these two possibilities, then Supply_Bodies does nothing. The
- -- dummy body is supplied by setting the subprogram to be Imported with
- -- convention Stubbed.
+ -- dummy body contains a single Raise statement.
procedure Supply_Bodies (L : List_Id);
-- Calls Supply_Bodies for all elements of the given list L
Itm : Node_Id;
Ent : Entity_Id;
+ procedure Add_To_Context_And_Mark (Itm : Node_Id);
+ -- This procedure is called when the elaborate indication must be
+ -- applied to a unit not in the context of the referencing unit. The
+ -- unit gets added to the context as an implicit with.
+
+ function In_Withs_Of (UEs : Entity_Id) return Boolean;
+ -- UEs is the spec entity of a unit. If the unit to be marked is
+ -- in the context item list of this unit spec, then the call returns
+ -- True and Itm is left set to point to the relevant N_With_Clause node.
+
procedure Set_Elab_Flag (Itm : Node_Id);
-- Sets Elaborate_[All_]Desirable as appropriate on Itm
+ -----------------------------
+ -- Add_To_Context_And_Mark --
+ -----------------------------
+
+ procedure Add_To_Context_And_Mark (Itm : Node_Id) is
+ CW : constant Node_Id :=
+ Make_With_Clause (Sloc (Itm),
+ Name => Name (Itm));
+
+ begin
+ Set_Library_Unit (CW, Library_Unit (Itm));
+ Set_Implicit_With (CW, True);
+
+ -- Set elaborate all desirable on copy and then append the copy to
+ -- the list of body with's and we are done.
+
+ Set_Elab_Flag (CW);
+ Append_To (CI, CW);
+ end Add_To_Context_And_Mark;
+
+ -----------------
+ -- In_Withs_Of --
+ -----------------
+
+ function In_Withs_Of (UEs : Entity_Id) return Boolean is
+ UNs : constant Unit_Number_Type := Get_Source_Unit (UEs);
+ CUs : constant Node_Id := Cunit (UNs);
+ CIs : constant List_Id := Context_Items (CUs);
+
+ begin
+ Itm := First (CIs);
+ while Present (Itm) loop
+ if Nkind (Itm) = N_With_Clause then
+ Ent :=
+ Cunit_Entity (Get_Cunit_Unit_Number (Library_Unit (Itm)));
+
+ if U = Ent then
+ return True;
+ end if;
+ end if;
+
+ Next (Itm);
+ end loop;
+
+ return False;
+ end In_Withs_Of;
+
-------------------
-- Set_Elab_Flag --
-------------------
-- Start of processing for Activate_Elaborate_All_Desirable
begin
+ -- Do not set binder indication if expansion is disabled, as when
+ -- compiling a generic unit.
+
+ if not Expander_Active then
+ return;
+ end if;
+
Itm := First (CI);
while Present (Itm) loop
if Nkind (Itm) = N_With_Clause then
-- current unit. One legitimate possibility is that the with clause
-- is present in the spec when we are a body.
- if Is_Body_Name (Unm) then
+ if Is_Body_Name (Unm)
+ and then In_Withs_Of (Spec_Entity (UE))
+ then
+ Add_To_Context_And_Mark (Itm);
+ return;
+ end if;
+
+ -- Similarly, we may be in the spec or body of a child unit, where
+ -- the unit in question is with'ed by some ancestor of the child unit.
+
+ if Is_Child_Name (Unm) then
declare
- UEs : constant Entity_Id := Spec_Entity (UE);
- UNs : constant Unit_Number_Type := Get_Source_Unit (UEs);
- CUs : constant Node_Id := Cunit (UNs);
- CIs : constant List_Id := Context_Items (CUs);
+ Pkg : Entity_Id;
begin
- Itm := First (CIs);
- while Present (Itm) loop
- if Nkind (Itm) = N_With_Clause then
- Ent :=
- Cunit_Entity (Get_Cunit_Unit_Number (Library_Unit (Itm)));
-
- if U = Ent then
-
- -- If we find it, we have to create an implicit copy
- -- of the with clause for the body, just so that it
- -- can be marked as elaborate desirable (it would be
- -- wrong to put it on the spec item, since it is the
- -- body that has possible elaboration problems, not
- -- the spec.
-
- declare
- CW : constant Node_Id :=
- Make_With_Clause (Sloc (Itm),
- Name => Name (Itm));
-
- begin
- Set_Library_Unit (CW, Library_Unit (Itm));
- Set_Implicit_With (CW, True);
-
- -- Set elaborate all desirable on copy and then
- -- append the copy to the list of body with's
- -- and we are done.
-
- Set_Elab_Flag (CW);
- Append_To (CI, CW);
- return;
- end;
- end if;
- end if;
+ Pkg := UE;
+ loop
+ Pkg := Scope (Pkg);
+ exit when Pkg = Standard_Standard;
- Next (Itm);
+ if In_Withs_Of (Pkg) then
+ Add_To_Context_And_Mark (Itm);
+ return;
+ end if;
end loop;
end;
end if;
Decl : Node_Id;
E_Scope : Entity_Id;
- -- Top level scope of entity for called subprogram. This
- -- value includes following renamings and derivations, so
- -- this scope can be in a non-visible unit. This is the
- -- scope that is to be investigated to see whether an
- -- elaboration check is required.
+ -- Top level scope of entity for called subprogram. This value includes
+ -- following renamings and derivations, so this scope can be in a
+ -- non-visible unit. This is the scope that is to be investigated to
+ -- see whether an elaboration check is required.
W_Scope : Entity_Id;
-- Top level scope of directly called entity for subprogram. This
-- calls and calls involving object notation) where W_Scope might not
-- be in the context of the current unit, and there is an intermediate
-- package that is, in which case the Elaborate_All has to be placed
- -- on this intedermediate package. These special cases are handled in
+ -- on this intermediate package. These special cases are handled in
-- Set_Elaboration_Constraint.
Body_Acts_As_Spec : Boolean;
return;
end if;
- -- Go to parent for derived subprogram, or to original subprogram
- -- in the case of a renaming (Alias covers both these cases)
+ -- Go to parent for derived subprogram, or to original subprogram in the
+ -- case of a renaming (Alias covers both these cases).
Ent := E;
loop
return;
end if;
- -- Nothing to do for a generic instance, because in this case
- -- the checking was at the point of instantiation of the generic
- -- However, this shortcut is only applicable in static mode.
+ -- Nothing to do for a generic instance, because in this case the
+ -- checking was at the point of instantiation of the generic However,
+ -- this shortcut is only applicable in static mode.
if Is_Generic_Instance (Ent) and not Dynamic_Elaboration_Checks then
return;
end if;
- -- Nothing to do if subprogram with no separate spec. However,
- -- a call to Deep_Initialize may result in a call to a user-defined
+ -- Nothing to do if subprogram with no separate spec. However, a
+ -- call to Deep_Initialize may result in a call to a user-defined
-- Initialize procedure, which imposes a body dependency. This
-- happens only if the type is controlled and the Initialize
-- procedure is not inherited.
then
E_Scope := Spec_Entity (Cunit_Entity (Unit_Caller));
- -- If we don't get a spec entity, just ignore call. Not
- -- quite clear why this check is necessary.
+ -- If we don't get a spec entity, just ignore call. Not quite
+ -- clear why this check is necessary. ???
if No (E_Scope) then
return;
E_Scope := Scope (E_Scope);
end loop;
- -- For the case N is not an instance, or a call within instance
- -- We recompute E_Scope for the error message, since we
- -- do NOT want to go to the unit which has the ultimate
- -- declaration in the case of renaming and derivation and
- -- we also want to go to the generic unit in the case of
- -- an instance, and no further.
+ -- For the case N is not an instance, or a call within instance, we
+ -- recompute E_Scope for the error message, since we do NOT want to
+ -- go to the unit which has the ultimate declaration in the case of
+ -- renaming and derivation and we also want to go to the generic unit
+ -- in the case of an instance, and no further.
else
- -- Loop to carefully follow renamings and derivations
- -- one step outside the current unit, but not further.
+ -- Loop to carefully follow renamings and derivations one step
+ -- outside the current unit, but not further.
if not Inst_Case
and then Present (Alias (Ent))
and then Elab_Warnings
and then Generate_Warnings
then
- if Inst_Case then
- Error_Msg_NE
- ("instantiation of& may raise Program_Error?", N, Ent);
+ Generate_Elab_Warnings : declare
+ procedure Elab_Warning
+ (Msg_D : String;
+ Msg_S : String;
+ Ent : Node_Or_Entity_Id);
+ -- Generate a call to Error_Msg_NE with parameters Msg_D or
+ -- Msg_S (for dynamic or static elaboration model), N and Ent.
+
+ ------------------
+ -- Elab_Warning --
+ ------------------
+
+ procedure Elab_Warning
+ (Msg_D : String;
+ Msg_S : String;
+ Ent : Node_Or_Entity_Id)
+ is
+ begin
+ if Dynamic_Elaboration_Checks then
+ Error_Msg_NE (Msg_D, N, Ent);
+ else
+ Error_Msg_NE (Msg_S, N, Ent);
+ end if;
+ end Elab_Warning;
- else
- if Is_Init_Proc (Entity (Name (N)))
- and then Comes_From_Source (Ent)
- then
- Error_Msg_NE
- ("implicit call to & may raise Program_Error?", N, Ent);
+ -- Start of processing for Generate_Elab_Warnings
+
+ begin
+ if Inst_Case then
+ Elab_Warning
+ ("instantiation of& may raise Program_Error?",
+ "info: instantiation of& during elaboration?", Ent);
else
- Error_Msg_NE
- ("call to & may raise Program_Error?", N, Ent);
+ if Nkind (Name (N)) in N_Has_Entity
+ and then Is_Init_Proc (Entity (Name (N)))
+ and then Comes_From_Source (Ent)
+ then
+ Elab_Warning
+ ("implicit call to & may raise Program_Error?",
+ "info: implicit call to & during elaboration?",
+ Ent);
+
+ else
+ Elab_Warning
+ ("call to & may raise Program_Error?",
+ "info: call to & during elaboration?",
+ Ent);
+ end if;
end if;
- end if;
- Error_Msg_Qual_Level := Nat'Last;
+ Error_Msg_Qual_Level := Nat'Last;
- if Nkind (N) in N_Subprogram_Instantiation then
- Error_Msg_NE
- ("\missing pragma Elaborate for&?", N, W_Scope);
- else
- Error_Msg_NE
- ("\missing pragma Elaborate_All for&?", N, W_Scope);
- end if;
+ if Nkind (N) in N_Subprogram_Instantiation then
+ Elab_Warning
+ ("\missing pragma Elaborate for&?",
+ "\info: implicit pragma Elaborate for& generated?",
+ W_Scope);
+ else
+ Elab_Warning
+ ("\missing pragma Elaborate_All for&?",
+ "\info: implicit pragma Elaborate_All for & generated?",
+ W_Scope);
+ end if;
+ end Generate_Elab_Warnings;
Error_Msg_Qual_Level := 0;
Output_Calls (N);
- -- Set flag to prevent further warnings for same unit
- -- unless in All_Errors_Mode.
+ -- Set flag to prevent further warnings for same unit unless in
+ -- All_Errors_Mode.
if not All_Errors_Mode and not Dynamic_Elaboration_Checks then
Set_Suppress_Elaboration_Warnings (W_Scope, True);
-- Runtime elaboration check required. Generate check of the
-- elaboration Boolean for the unit containing the entity.
- -- Note that for this case, we do check the real unit (the
- -- one from following renamings, since that is the issue!)
+ -- Note that for this case, we do check the real unit (the one
+ -- from following renamings, since that is the issue!)
-- Could this possibly miss a useless but required PE???
Insert_Elab_Check (N,
Make_Attribute_Reference (Loc,
Attribute_Name => Name_Elaborated,
- Prefix =>
- New_Occurrence_Of
- (Spec_Entity (E_Scope), Loc)));
+ Prefix => New_Occurrence_Of (Spec_Entity (E_Scope), Loc)));
end if;
-- Case of static elaboration model
else
- -- Do not do anything if elaboration checks suppressed. Note
- -- that we check Ent here, not E, since we want the real entity
- -- for the body to see if checks are suppressed for it, not the
- -- dummy entry for renamings or derivations.
+ -- Do not do anything if elaboration checks suppressed. Note that
+ -- we check Ent here, not E, since we want the real entity for the
+ -- body to see if checks are suppressed for it, not the dummy
+ -- entry for renamings or derivations.
if Elaboration_Checks_Suppressed (Ent)
or else Elaboration_Checks_Suppressed (E_Scope)
function Get_Called_Ent return Entity_Id;
-- Retrieve called entity. If this is a call to a protected subprogram,
-- entity is a selected component. The callable entity may be absent,
- -- in which case there is no check to perform. This happens with
+ -- in which case there is no check to perform. This happens with
-- non-analyzed calls in nested generics.
--------------------
-- Nothing to do if inside a generic template
elsif Inside_A_Generic
- and then not Present (Enclosing_Generic_Body (N))
+ and then No (Enclosing_Generic_Body (N))
then
return;
end if;
Write_Eol;
end if;
- -- Climb up the tree to make sure we are not inside a
- -- default expression of a parameter specification or
- -- a record component, since in both these cases, we
- -- will be doing the actual call later, not now, and it
- -- is at the time of the actual call (statically speaking)
- -- that we must do our static check, not at the time of
- -- its initial analysis). However, we have to check calls
- -- within component definitions (e.g., a function call
- -- that determines an array component bound), so we
+ -- Climb up the tree to make sure we are not inside default expression
+ -- of a parameter specification or a record component, since in both
+ -- these cases, we will be doing the actual call later, not now, and it
+ -- is at the time of the actual call (statically speaking) that we must
+ -- do our static check, not at the time of its initial analysis).
+
+ -- However, we have to check calls within component definitions (e.g.
+ -- a function call that determines an array component bound), so we
-- terminate the loop in that case.
P := Parent (N);
if No (Outer_Scope) then
Elab_Visited.Set_Last (0);
- -- Nothing to do if current scope is Standard (this is a bit
- -- odd, but it happens in the case of generic instantiations).
+ -- Nothing to do if current scope is Standard (this is a bit odd, but
+ -- it happens in the case of generic instantiations).
C_Scope := Current_Scope;
From_Elab_Code := not In_Subprogram_Or_Concurrent_Unit;
if From_Elab_Code then
- -- Complain if call that comes from source in preelaborated
- -- unit and we are not inside a subprogram (i.e. we are in
- -- elab code)
+ -- Complain if call that comes from source in preelaborated unit
+ -- and we are not inside a subprogram (i.e. we are in elab code).
if Comes_From_Source (N)
and then In_Preelaborated_Unit
return;
-- Static model, call is not in elaboration code, we
- -- never need to worry, because in the static model
- -- the top level caller always takes care of things.
+ -- never need to worry, because in the static model the
+ -- top level caller always takes care of things.
else
return;
-- A call to an Init_Proc in elaboration code may bring additional
-- dependencies, if some of the record components thereof have
- -- initializations that are function calls that come from source.
- -- We treat the current node as a call to each of these functions,
- -- to check their elaboration impact.
+ -- initializations that are function calls that come from source. We
+ -- treat the current node as a call to each of these functions, to check
+ -- their elaboration impact.
if Is_Init_Proc (Ent)
and then From_Elab_Code
Process_Init_Proc : declare
Unit_Decl : constant Node_Id := Unit_Declaration_Node (Ent);
- function Process (Nod : Node_Id) return Traverse_Result;
- -- Find subprogram calls within body of init_proc for
- -- Traverse instantiation below.
+ function Check_Init_Call (Nod : Node_Id) return Traverse_Result;
+ -- Find subprogram calls within body of Init_Proc for Traverse
+ -- instantiation below.
+
+ procedure Traverse_Body is new Traverse_Proc (Check_Init_Call);
+ -- Traversal procedure to find all calls with body of Init_Proc
- function Process (Nod : Node_Id) return Traverse_Result is
+ ---------------------
+ -- Check_Init_Call --
+ ---------------------
+
+ function Check_Init_Call (Nod : Node_Id) return Traverse_Result is
Func : Entity_Id;
begin
else
return OK;
end if;
- end Process;
-
- procedure Traverse_Body is new Traverse_Proc (Process);
+ end Check_Init_Call;
-- Start of processing for Process_Init_Proc
end if;
end Check_Elab_Call;
+ -----------------------
+ -- Check_Elab_Assign --
+ -----------------------
+
+ procedure Check_Elab_Assign (N : Node_Id) is
+ Ent : Entity_Id;
+ Scop : Entity_Id;
+
+ Pkg_Spec : Entity_Id;
+ Pkg_Body : Entity_Id;
+
+ begin
+ -- For record or array component, check prefix. If it is an access type,
+ -- then there is nothing to do (we do not know what is being assigned),
+ -- but otherwise this is an assignment to the prefix.
+
+ if Nkind (N) = N_Indexed_Component
+ or else
+ Nkind (N) = N_Selected_Component
+ or else
+ Nkind (N) = N_Slice
+ then
+ if not Is_Access_Type (Etype (Prefix (N))) then
+ Check_Elab_Assign (Prefix (N));
+ end if;
+
+ return;
+ end if;
+
+ -- For type conversion, check expression
+
+ if Nkind (N) = N_Type_Conversion then
+ Check_Elab_Assign (Expression (N));
+ return;
+ end if;
+
+ -- Nothing to do if this is not an entity reference otherwise get entity
+
+ if Is_Entity_Name (N) then
+ Ent := Entity (N);
+ else
+ return;
+ end if;
+
+ -- What we are looking for is a reference in the body of a package that
+ -- modifies a variable declared in the visible part of the package spec.
+
+ if Present (Ent)
+ and then Comes_From_Source (N)
+ and then not Suppress_Elaboration_Warnings (Ent)
+ and then Ekind (Ent) = E_Variable
+ and then not In_Private_Part (Ent)
+ and then Is_Library_Level_Entity (Ent)
+ then
+ Scop := Current_Scope;
+ loop
+ if No (Scop) or else Scop = Standard_Standard then
+ return;
+ elsif Ekind (Scop) = E_Package
+ and then Is_Compilation_Unit (Scop)
+ then
+ exit;
+ else
+ Scop := Scope (Scop);
+ end if;
+ end loop;
+
+ -- Here Scop points to the containing library package
+
+ Pkg_Spec := Scop;
+ Pkg_Body := Body_Entity (Pkg_Spec);
+
+ -- All OK if the package has an Elaborate_Body pragma
+
+ if Has_Pragma_Elaborate_Body (Scop) then
+ return;
+ end if;
+
+ -- OK if entity being modified is not in containing package spec
+
+ if not In_Same_Source_Unit (Scop, Ent) then
+ return;
+ end if;
+
+ -- All OK if entity appears in generic package or generic instance.
+ -- We just get too messed up trying to give proper warnings in the
+ -- presence of generics. Better no message than a junk one.
+
+ Scop := Scope (Ent);
+ while Present (Scop) and then Scop /= Pkg_Spec loop
+ if Ekind (Scop) = E_Generic_Package then
+ return;
+ elsif Ekind (Scop) = E_Package
+ and then Is_Generic_Instance (Scop)
+ then
+ return;
+ end if;
+
+ Scop := Scope (Scop);
+ end loop;
+
+ -- All OK if in task, don't issue warnings there
+
+ if In_Task_Activation then
+ return;
+ end if;
+
+ -- OK if no package body
+
+ if No (Pkg_Body) then
+ return;
+ end if;
+
+ -- OK if reference is not in package body
+
+ if not In_Same_Source_Unit (Pkg_Body, N) then
+ return;
+ end if;
+
+ -- OK if package body has no handled statement sequence
+
+ declare
+ HSS : constant Node_Id :=
+ Handled_Statement_Sequence (Declaration_Node (Pkg_Body));
+ begin
+ if No (HSS) or else not Comes_From_Source (HSS) then
+ return;
+ end if;
+ end;
+
+ -- We definitely have a case of a modification of an entity in
+ -- the package spec from the elaboration code of the package body.
+ -- We may not give the warning (because there are some additional
+ -- checks to avoid too many false positives), but it would be a good
+ -- idea for the binder to try to keep the body elaboration close to
+ -- the spec elaboration.
+
+ Set_Elaborate_Body_Desirable (Pkg_Spec);
+
+ -- All OK in gnat mode (we know what we are doing)
+
+ if GNAT_Mode then
+ return;
+ end if;
+
+ -- All OK if all warnings suppressed
+
+ if Warning_Mode = Suppress then
+ return;
+ end if;
+
+ -- All OK if elaboration checks suppressed for entity
+
+ if Checks_May_Be_Suppressed (Ent)
+ and then Is_Check_Suppressed (Ent, Elaboration_Check)
+ then
+ return;
+ end if;
+
+ -- OK if the entity is initialized. Note that the No_Initialization
+ -- flag usually means that the initialization has been rewritten into
+ -- assignments, but that still counts for us.
+
+ declare
+ Decl : constant Node_Id := Declaration_Node (Ent);
+ begin
+ if Nkind (Decl) = N_Object_Declaration
+ and then (Present (Expression (Decl))
+ or else No_Initialization (Decl))
+ then
+ return;
+ end if;
+ end;
+
+ -- Here is where we give the warning
+
+ -- All OK if warnings suppressed on the entity
+
+ if not Has_Warnings_Off (Ent) then
+ Error_Msg_Sloc := Sloc (Ent);
+
+ Error_Msg_NE
+ ("?elaboration code may access& before it is initialized",
+ N, Ent);
+ Error_Msg_NE
+ ("\?suggest adding pragma Elaborate_Body to spec of &",
+ N, Scop);
+ Error_Msg_N
+ ("\?or an explicit initialization could be added #", N);
+ end if;
+
+ if not All_Errors_Mode then
+ Set_Suppress_Elaboration_Warnings (Ent);
+ end if;
+ end if;
+ end Check_Elab_Assign;
+
----------------------
-- Check_Elab_Calls --
----------------------
procedure Check_Elab_Calls is
begin
- -- If expansion is disabled, do not generate any checks. Also
- -- skip checks if any subunits are missing because in either
- -- case we lack the full information that we need, and no object
- -- file will be created in any case.
+ -- If expansion is disabled, do not generate any checks. Also skip
+ -- checks if any subunits are missing because in either case we lack the
+ -- full information that we need, and no object file will be created in
+ -- any case.
if not Expander_Active
or else Is_Generic_Unit (Cunit_Entity (Main_Unit))
Expander_Mode_Save_And_Set (True);
for J in Delay_Check.First .. Delay_Check.Last loop
- New_Scope (Delay_Check.Table (J).Curscop);
+ Push_Scope (Delay_Check.Table (J).Curscop);
From_Elab_Code := Delay_Check.Table (J).From_Elab_Code;
Check_Internal_Call_Continue (
-- outer level call.
-- It is an outer level instantiation from elaboration code, or the
- -- instantiated entity is in the same elaboratoin scope.
+ -- instantiated entity is in the same elaboration scope.
-- And in these cases, we will check both the inter-unit case and
-- the intra-unit (within a single unit) case.
Set_C_Scope;
Check_A_Call (N, Ent, Scope (Ent), Inter_Unit_Only => False);
- -- If none of those cases holds, but Dynamic_Elaboration_Checks mode
- -- is set, then we will do the check, but only in the inter-unit case
- -- (this is to accommodate unguarded elaboration calls from other units
- -- in which this same mode is set). We inhibit warnings in this case,
- -- since this instantiation is not occurring in elaboration code.
+ -- If none of those cases holds, but Dynamic_Elaboration_Checks mode is
+ -- set, then we will do the check, but only in the inter-unit case (this
+ -- is to accommodate unguarded elaboration calls from other units in
+ -- which this same mode is set). We inhibit warnings in this case, since
+ -- this instantiation is not occurring in elaboration code.
elsif Dynamic_Elaboration_Checks then
Set_C_Scope;
elsif not Full_Analysis then
return;
- -- Nothing to do if within a default expression, since the call
- -- is not actualy being made at this time.
+ -- Nothing to do if analyzing in special spec-expression mode, since the
+ -- call is not actually being made at this time.
- elsif In_Default_Expression then
+ elsif In_Spec_Expression then
return;
-- Nothing to do for call to intrinsic subprogram
-- Delay this call if we are still delaying calls
if Delaying_Elab_Checks then
- Delay_Check.Increment_Last;
- Delay_Check.Table (Delay_Check.Last) :=
+ Delay_Check.Append (
(N => N,
E => E,
Orig_Ent => Orig_Ent,
Curscop => Current_Scope,
Outer_Scope => Outer_Scope,
- From_Elab_Code => From_Elab_Code);
+ From_Elab_Code => From_Elab_Code));
return;
-- Otherwise, call phase 2 continuation right now
Sbody : Node_Id;
Ebody : Entity_Id;
- function Process (N : Node_Id) return Traverse_Result;
- -- Function applied to each node as we traverse the body.
- -- Checks for call that needs checking, and if so checks
- -- it. Always returns OK, so entire tree is traversed.
+ function Find_Elab_Reference (N : Node_Id) return Traverse_Result;
+ -- Function applied to each node as we traverse the body. Checks for
+ -- call or entity reference that needs checking, and if so checks it.
+ -- Always returns OK, so entire tree is traversed, except that as
+ -- described below subprogram bodies are skipped for now.
+
+ procedure Traverse is new Atree.Traverse_Proc (Find_Elab_Reference);
+ -- Traverse procedure using above Find_Elab_Reference function
- -------------
- -- Process --
- -------------
+ -------------------------
+ -- Find_Elab_Reference --
+ -------------------------
+
+ function Find_Elab_Reference (N : Node_Id) return Traverse_Result is
+ Actual : Node_Id;
- function Process (N : Node_Id) return Traverse_Result is
begin
-- If user has specified that there are no entry calls in elaboration
-- code, do not trace past an accept statement, because the rendez-
then
return Abandon;
- -- If we have a subprogram call, check it
+ -- If we have a function call, check it
- elsif Nkind (N) = N_Function_Call
- or else Nkind (N) = N_Procedure_Call_Statement
- then
+ elsif Nkind (N) = N_Function_Call then
Check_Elab_Call (N, Outer_Scope);
return OK;
+ -- If we have a procedure call, check the call, and also check
+ -- arguments that are assignments (OUT or IN OUT mode formals).
+
+ elsif Nkind (N) = N_Procedure_Call_Statement then
+ Check_Elab_Call (N, Outer_Scope);
+
+ Actual := First_Actual (N);
+ while Present (Actual) loop
+ if Known_To_Be_Assigned (Actual) then
+ Check_Elab_Assign (Actual);
+ end if;
+
+ Next_Actual (Actual);
+ end loop;
+
+ return OK;
+
-- If we have a generic instantiation, check it
elsif Nkind (N) in N_Generic_Instantiation then
Check_Elab_Instantiation (N, Outer_Scope);
return OK;
- -- Skip subprogram bodies that come from source (wait for
- -- call to analyze these). The reason for the come from
- -- source test is to avoid catching task bodies.
+ -- Skip subprogram bodies that come from source (wait for call to
+ -- analyze these). The reason for the come from source test is to
+ -- avoid catching task bodies.
- -- For task bodies, we should really avoid these too, waiting
- -- for the task activation, but that's too much trouble to
- -- catch for now, so we go in unconditionally. This is not
- -- so terrible, it means the error backtrace is not quite
- -- complete, and we are too eager to scan bodies of tasks
- -- that are unused, but this is hardly very significant!
+ -- For task bodies, we should really avoid these too, waiting for the
+ -- task activation, but that's too much trouble to catch for now, so
+ -- we go in unconditionally. This is not so terrible, it means the
+ -- error backtrace is not quite complete, and we are too eager to
+ -- scan bodies of tasks that are unused, but this is hardly very
+ -- significant!
elsif Nkind (N) = N_Subprogram_Body
and then Comes_From_Source (N)
then
return Skip;
+ elsif Nkind (N) = N_Assignment_Statement
+ and then Comes_From_Source (N)
+ then
+ Check_Elab_Assign (Name (N));
+ return OK;
+
else
return OK;
end if;
- end Process;
-
- procedure Traverse is new Atree.Traverse_Proc;
- -- Traverse procedure using above Process function
+ end Find_Elab_Reference;
-- Start of processing for Check_Internal_Call_Continue
Outer_Level_Sloc := Loc;
end if;
- Elab_Visited.Increment_Last;
- Elab_Visited.Table (Elab_Visited.Last) := E;
+ Elab_Visited.Append (E);
-- If the call is to a function that renames a literal, no check
-- is needed.
end if;
end if;
- -- If the body appears after the outer level call or
- -- instantiation then we have an error case handled below.
+ -- If the body appears after the outer level call or instantiation then
+ -- we have an error case handled below.
if Earlier_In_Extended_Unit (Outer_Level_Sloc, Sloc (Sbody))
and then not In_Task_Activation
elsif Inst_Case then
return;
- -- Otherwise we have a call, so we trace through the called
- -- body to see if it has any problems ..
+ -- Otherwise we have a call, so we trace through the called body to see
+ -- if it has any problems.
else
pragma Assert (Nkind (Sbody) = N_Subprogram_Body);
- Elab_Call.Increment_Last;
- Elab_Call.Table (Elab_Call.Last).Cloc := Loc;
- Elab_Call.Table (Elab_Call.Last).Ent := E;
+ Elab_Call.Append ((Cloc => Loc, Ent => E));
if Debug_Flag_LL then
Write_Str ("Elab_Call.Last = ");
Write_Eol;
end if;
- -- Now traverse declarations and statements of subprogram body.
- -- Note that we cannot simply Traverse (Sbody), since traverse
- -- does not normally visit subprogram bodies.
+ -- Now traverse declarations and statements of subprogram body. Note
+ -- that we cannot simply Traverse (Sbody), since traverse does not
+ -- normally visit subprogram bodies.
declare
Decl : Node_Id;
return;
end if;
- -- Here is the case of calling a subprogram where the body has
- -- not yet been encountered, a warning message is needed.
+ -- Here is the case of calling a subprogram where the body has not yet
+ -- been encountered, a warning message is needed.
- -- If we have nothing in the call stack, then this is at the
- -- outer level, and the ABE is bound to occur.
+ -- If we have nothing in the call stack, then this is at the outer
+ -- level, and the ABE is bound to occur.
if Elab_Call.Last = 0 then
if Inst_Case then
begin
Set_Elaboration_Entity (E, Ent);
- New_Scope (Scope (E));
+ Push_Scope (Scope (E));
Insert_Action (Declaration_Node (E),
Make_Object_Declaration (Loce,
Set_Elaboration_Flag (Sbody, E);
- -- Kill current value indication. This is necessary
- -- because the tests of this flag are inserted out of
- -- sequence and must not pick up bogus indications of
- -- the wrong constant value. Also, this is never a true
- -- constant, since one way or another, it gets reset.
+ -- Kill current value indication. This is necessary because
+ -- the tests of this flag are inserted out of sequence and
+ -- must not pick up bogus indications of the wrong constant
+ -- value. Also, this is never a true constant, since one way
+ -- or another, it gets reset.
Set_Current_Value (Ent, Empty);
+ Set_Last_Assignment (Ent, Empty);
Set_Is_True_Constant (Ent, False);
Pop_Scope;
end;
("task will be activated before elaboration of its body?",
Decl);
Error_Msg_N
- ("Program_Error will be raised at run-time?", Decl);
+ ("\Program_Error will be raised at run-time?", Decl);
elsif
Present (Corresponding_Body (Unit_Declaration_Node (Proc)))
-- We only perform detailed checks in all tasks are library level
-- entities. If the master is a subprogram or task, activation will
-- depend on the activation of the master itself.
+
-- Should dynamic checks be added in the more general case???
if Ekind (Enclosing) /= E_Package then
and then
not Restriction_Active (No_Entry_Calls_In_Elaboration_Code)
then
- -- Runtime elaboration check required. generate check of the
+ -- Runtime elaboration check required. Generate check of the
-- elaboration Boolean for the unit containing the entity.
Insert_Elab_Check (N,
Make_Attribute_Reference (Loc,
Attribute_Name => Name_Elaborated,
Prefix =>
- New_Occurrence_Of
- (Spec_Entity (Task_Scope), Loc)));
+ New_Occurrence_Of (Spec_Entity (Task_Scope), Loc)));
end if;
else
Chars (Subp) = Name_Initialize
and then Comes_From_Source (Subp)
and then Present (Parameter_Associations (Call))
- and then Is_Controlled
- (Etype (First (Parameter_Associations (Call))));
+ and then Is_Controlled (Etype (First_Actual (Call)));
begin
- -- If the unit is mentioned in a with_clause of the current
- -- unit, it is visible, and we can set the elaboration flag.
+ -- If the unit is mentioned in a with_clause of the current unit, it is
+ -- visible, and we can set the elaboration flag.
if Is_Immediately_Visible (Scop)
- or else
- (Is_Child_Unit (Scop) and then Is_Visible_Child_Unit (Scop))
+ or else (Is_Child_Unit (Scop) and then Is_Visible_Child_Unit (Scop))
then
Activate_Elaborate_All_Desirable (Call, Scop);
Set_Suppress_Elaboration_Warnings (Scop, True);
return;
end if;
- -- If the unit is not in the context, there must be an intermediate
- -- unit that is, on which we need to place to elaboration flag. This
- -- happens with init proc calls.
+ -- If the unit is not in the context, there must be an intermediate unit
+ -- that is, on which we need to place to elaboration flag. This happens
+ -- with init proc calls.
if Is_Init_Proc (Subp)
or else Init_Call
then
- -- The initialization call is on an object whose type is not
- -- declared in the same scope as the subprogram. The type of
- -- the object must be a subtype of the type of operation. This
- -- object is the first actual in the call.
+ -- The initialization call is on an object whose type is not declared
+ -- in the same scope as the subprogram. The type of the object must
+ -- be a subtype of the type of operation. This object is the first
+ -- actual in the call.
declare
- Typ : constant Entity_Id :=
- Etype (First (Parameter_Associations (Call)));
+ Typ : constant Entity_Id :=
+ Etype (First (Parameter_Associations (Call)));
begin
Elab_Unit := Scope (Typ);
while (Present (Elab_Unit))
function Find_Body_In (E : Entity_Id; N : Node_Id) return Node_Id;
-- Determine if the list of nodes headed by N and linked by Next
- -- contains a package body for the package spec entity E, and if
- -- so return the package body. If not, then returns Empty.
+ -- contains a package body for the package spec entity E, and if so
+ -- return the package body. If not, then returns Empty.
function Load_Package_Body (Nam : Unit_Name_Type) return Node_Id;
-- This procedure is called load the unit whose name is given by Nam.
-- This unit is being loaded to see whether it contains an optional
- -- generic body. The returned value is the loaded unit, which is
- -- always a package body (only package bodies can contain other
- -- entities in the sense in which Has_Generic_Body is interested).
- -- We only attempt to load bodies if we are generating code. If we
- -- are in semantics check only mode, then it would be wrong to load
- -- bodies that are not required from a semantic point of view, so
- -- in this case we return Empty. The result is that the caller may
- -- incorrectly decide that a generic spec does not have a body when
- -- in fact it does, but the only harm in this is that some warnings
- -- on elaboration problems may be lost in semantic checks only mode,
- -- which is not big loss. We also return Empty if we go for a body
- -- and it is not there.
+ -- generic body. The returned value is the loaded unit, which is always
+ -- a package body (only package bodies can contain other entities in the
+ -- sense in which Has_Generic_Body is interested). We only attempt to
+ -- load bodies if we are generating code. If we are in semantics check
+ -- only mode, then it would be wrong to load bodies that are not
+ -- required from a semantic point of view, so in this case we return
+ -- Empty. The result is that the caller may incorrectly decide that a
+ -- generic spec does not have a body when in fact it does, but the only
+ -- harm in this is that some warnings on elaboration problems may be
+ -- lost in semantic checks only mode, which is not big loss. We also
+ -- return Empty if we go for a body and it is not there.
function Locate_Corresponding_Body (PE : Entity_Id) return Node_Id;
-- PE is the entity for a package spec. This function locates the
- -- corresponding package body, returning Empty if none is found.
- -- The package body returned is fully parsed but may not yet be
- -- analyzed, so only syntactic fields should be referenced.
+ -- corresponding package body, returning Empty if none is found. The
+ -- package body returned is fully parsed but may not yet be analyzed,
+ -- so only syntactic fields should be referenced.
------------------
-- Find_Body_In --
begin
if Is_Library_Level_Entity (PE) then
- -- If package is a library unit that requires a body, we have
- -- no choice but to go after that body because it might contain
- -- an optional body for the original generic package.
+ -- If package is a library unit that requires a body, we have no
+ -- choice but to go after that body because it might contain an
+ -- optional body for the original generic package.
if Unit_Requires_Body (PE) then
- -- Load the body. Note that we are a little careful here to
- -- use Spec to get the unit number, rather than PE or Decl,
- -- since in the case where the package is itself a library
- -- level instantiation, Spec will properly reference the
- -- generic template, which is what we really want.
+ -- Load the body. Note that we are a little careful here to use
+ -- Spec to get the unit number, rather than PE or Decl, since
+ -- in the case where the package is itself a library level
+ -- instantiation, Spec will properly reference the generic
+ -- template, which is what we really want.
return
Load_Package_Body
Make_Raise_Program_Error (Loc,
Reason => PE_Access_Before_Elaboration);
+ Reloc_N : Node_Id;
+
begin
Set_Etype (R, Typ);
Rewrite (N, R);
else
+ Reloc_N := Relocate_Node (N);
+ Save_Interps (N, Reloc_N);
Rewrite (N,
Make_Conditional_Expression (Loc,
- Expressions => New_List (C, Relocate_Node (N), R)));
+ Expressions => New_List (C, Reloc_N, R)));
end if;
Analyze_And_Resolve (N, Typ);
begin
-- Find elaboration scope for Scop1
+ -- This is either a subprogram or a compilation unit.
S1 := Scop1;
while S1 /= Standard_Standard
+ and then not Is_Compilation_Unit (S1)
and then (Ekind (S1) = E_Package
or else
Ekind (S1) = E_Protected_Type
S2 := Scop2;
while S2 /= Standard_Standard
+ and then not Is_Compilation_Unit (S2)
and then (Ekind (S2) = E_Package
or else
Ekind (S2) = E_Protected_Type
declare
Ent : constant Entity_Id := Defining_Unit_Name (Specification (N));
begin
- Set_Is_Imported (Ent);
- Set_Convention (Ent, Convention_Stubbed);
+
+ -- Internal subprograms will already have a generated body, so
+ -- there is no need to provide a stub for them.
+
+ if No (Corresponding_Body (N)) then
+ declare
+ Loc : constant Source_Ptr := Sloc (N);
+ B : Node_Id;
+ Formals : constant List_Id :=
+ Copy_Parameter_List (Ent);
+ Nam : constant Entity_Id :=
+ Make_Defining_Identifier (Loc, Chars (Ent));
+ Spec : Node_Id;
+ Stats : constant List_Id :=
+ New_List
+ (Make_Raise_Program_Error (Loc,
+ Reason => PE_Access_Before_Elaboration));
+ begin
+ if Ekind (Ent) = E_Function then
+ Spec :=
+ Make_Function_Specification (Loc,
+ Defining_Unit_Name => Nam,
+ Parameter_Specifications => Formals,
+ Result_Definition =>
+ New_Copy_Tree
+ (Result_Definition (Specification (N))));
+
+ -- We cannot reliably make a return statement for this
+ -- body, but none is needed because the call raises
+ -- program error.
+
+ Set_Return_Present (Ent);
+
+ else
+ Spec :=
+ Make_Procedure_Specification (Loc,
+ Defining_Unit_Name => Nam,
+ Parameter_Specifications => Formals);
+ end if;
+
+ B := Make_Subprogram_Body (Loc,
+ Specification => Spec,
+ Declarations => New_List,
+ Handled_Statement_Sequence =>
+ Make_Handled_Sequence_Of_Statements (Loc, Stats));
+ Insert_After (N, B);
+ Analyze (B);
+ end;
+ end if;
end;
elsif Nkind (N) = N_Package_Declaration then
declare
Spec : constant Node_Id := Specification (N);
begin
- New_Scope (Defining_Unit_Name (Spec));
+ Push_Scope (Defining_Unit_Name (Spec));
Supply_Bodies (Visible_Declarations (Spec));
Supply_Bodies (Private_Declarations (Spec));
Pop_Scope;
function Within (E1, E2 : Entity_Id) return Boolean is
Scop : Entity_Id;
-
begin
Scop := E1;
loop
if Scop = E2 then
return True;
-
elsif Scop = Standard_Standard then
return False;
-
else
Scop := Scope (Scop);
end if;
end loop;
-
- raise Program_Error;
end Within;
--------------------------
Item := First (Context_Items (Cunit (Current_Sem_Unit)));
while Present (Item) loop
if Nkind (Item) = N_Pragma
- and then Get_Pragma_Id (Chars (Item)) = Pragma_Elaborate_All
+ and then Pragma_Name (Item) = Name_Elaborate_All
then
-- Return if some previous error on the pragma itself
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