From: Arnaud Charlet Date: Tue, 2 Aug 2011 13:34:00 +0000 (+0200) Subject: [multiple changes] X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=23685ae6ecac53a9365195feaf56c986d7c2eae0;p=gcc.git [multiple changes] 2011-08-02 Pascal Obry * prj-proc.adb, make.adb, makeutl.adb: Minor reformatting. 2011-08-02 Hristian Kirtchev * exp_ch5.adb (Expand_Iterator_Loop): Code cleanup and reorganization. Set the associated loop as the related expression of internally generated cursors. * exp_ch7.adb (Is_Container_Cursor): New routine. (Wrap_Transient_Declaration): Supress the finalization of the list controller when the declaration denotes a container cursor. 2011-08-02 Yannick Moy * opt.ads (SPARK_Mode): update comment, SPARK_Mode only set through command line now. * par-ch3.adb (P_Delta_Constraint): remove check in SPARK mode that the expression is a simple expression. This check cannot be performed in the semantics, so just drop it. (P_Index_Or_Discriminant_Constraint): move check that the index or discriminant is a subtype mark to Analyze_Subtype_Declaration in the semantics. Other cases were previously checked in the semantics. * par-ch4.adb (P_Name): move checks that a selector name is not character literal or an operator symbol to Find_Selected_Component in the semantics * par-ch5.adb (Parse_Decls_Begin_End): move check that basic declarations are not placed after later declarations in a separate procedure in Sem_Util (possibly not the best choice?), to be used both during parsing, for Ada 83 mode, and during semantic analysis, for SPARK mode. * par-endh.adb (Check_End): move check that end label is not missing to Process_End_Label in the semantics * par-prag.adb (Process_Restrictions_Or_Restriction_Warnings): remove the special case for SPARK restriction * par.adb: use and with Sem_Util, for use in Parse_Decls_Begin_End * restrict.adb, restrict.ads (Check_Formal_Restriction): add a parameter Force to issue the error message even on internal node (used for generated end label). Call Check_Restriction to check when an error must be issued. In SPARK mode, issue an error message even if the restriction is not set. (Check_Restriction): new procedure with an additional out parameter to inform the caller that a message has been issued * sem_aggr.adb: Minor modification of message * sem_attr.adb (Analyze_Attribute): call Check_Formal_Restriction instead of issuing an error message directly * sem_ch3.adb (Analyze_Declarations): move here the check that basic declarations are not placed after later declarations, by calling Check_Later_Vs_Basic_Declarations (Analyze_Subtype_Declaration): move here the check that an index or discriminant constraint must be a subtype mark. Change the check that a subtype of String must start at one so that it works on subtype marks. * sem_ch4.adb (Analyze_Call): move here the check that a named association cannot follow a positional one in a call * sem_ch5.adb (Check_Unreachable_Code): call Check_Formal_Restriction instead of issuing an error message directly * sem_ch8.adb (Find_Selected_Component): move here the check that a selector name is not a character literal or an operator symbol. Move here the check that the prefix of an expanded name cannot be a subprogram or a loop statement. * sem_util.adb, sem_util.ads (Check_Later_Vs_Basic_Declarations): new procedure called from parsing and semantics to check that basic declarations are not placed after later declarations (Process_End_Label): move here the check that end label is not missing 2011-08-02 Arnaud Charlet * sem_ch13.adb (Analyze_Enumeration_Representation_Clause): Ignore enum representation clause in codepeer mode, since it confuses CodePeer and does not bring useful info. 2011-08-02 Ed Falis * init.c: initialize fp hw on MILS. 2011-08-02 Ed Schonberg * errout.adb (First_Node): for bodies, return the node itself (small optimization). For other nodes, do not check source_unit if the node comes from Standard. From-SVN: r177151 --- diff --git a/gcc/ada/ChangeLog b/gcc/ada/ChangeLog index cf7374dc8bf..79c2ce742da 100644 --- a/gcc/ada/ChangeLog +++ b/gcc/ada/ChangeLog @@ -1,3 +1,84 @@ +2011-08-02 Pascal Obry + + * prj-proc.adb, make.adb, makeutl.adb: Minor reformatting. + +2011-08-02 Hristian Kirtchev + + * exp_ch5.adb (Expand_Iterator_Loop): Code cleanup and reorganization. + Set the associated loop as the related expression of internally + generated cursors. + * exp_ch7.adb (Is_Container_Cursor): New routine. + (Wrap_Transient_Declaration): Supress the finalization of the list + controller when the declaration denotes a container cursor. + +2011-08-02 Yannick Moy + + * opt.ads (SPARK_Mode): update comment, SPARK_Mode only set through + command line now. + * par-ch3.adb (P_Delta_Constraint): remove check in SPARK mode that the + expression is a simple expression. This check cannot be performed in + the semantics, so just drop it. + (P_Index_Or_Discriminant_Constraint): move check that the index or + discriminant is a subtype mark to Analyze_Subtype_Declaration in the + semantics. Other cases were previously checked in the semantics. + * par-ch4.adb (P_Name): move checks that a selector name is not + character literal or an operator symbol to Find_Selected_Component in + the semantics + * par-ch5.adb (Parse_Decls_Begin_End): move check that basic + declarations are not placed after later declarations in a separate + procedure in Sem_Util (possibly not the best choice?), to be used both + during parsing, for Ada 83 mode, and during semantic analysis, for + SPARK mode. + * par-endh.adb (Check_End): move check that end label is not missing + to Process_End_Label in the semantics + * par-prag.adb (Process_Restrictions_Or_Restriction_Warnings): remove + the special case for SPARK restriction + * par.adb: use and with Sem_Util, for use in Parse_Decls_Begin_End + * restrict.adb, restrict.ads (Check_Formal_Restriction): add a + parameter Force to issue the error message even on internal node (used + for generated end label). Call Check_Restriction to check when an error + must be issued. In SPARK mode, issue an error message even if the + restriction is not set. + (Check_Restriction): new procedure with an additional out parameter to + inform the caller that a message has been issued + * sem_aggr.adb: Minor modification of message + * sem_attr.adb (Analyze_Attribute): call Check_Formal_Restriction + instead of issuing an error message directly + * sem_ch3.adb (Analyze_Declarations): move here the check that basic + declarations are not placed after later declarations, by calling + Check_Later_Vs_Basic_Declarations + (Analyze_Subtype_Declaration): move here the check that an index or + discriminant constraint must be a subtype mark. Change the check that + a subtype of String must start at one so that it works on subtype marks. + * sem_ch4.adb (Analyze_Call): move here the check that a named + association cannot follow a positional one in a call + * sem_ch5.adb (Check_Unreachable_Code): call Check_Formal_Restriction + instead of issuing an error message directly + * sem_ch8.adb (Find_Selected_Component): move here the check that a + selector name is not a character literal or an operator symbol. Move + here the check that the prefix of an expanded name cannot be a + subprogram or a loop statement. + * sem_util.adb, sem_util.ads (Check_Later_Vs_Basic_Declarations): new + procedure called from parsing and semantics to check that basic + declarations are not placed after later declarations + (Process_End_Label): move here the check that end label is not missing + +2011-08-02 Arnaud Charlet + + * sem_ch13.adb (Analyze_Enumeration_Representation_Clause): Ignore enum + representation clause in codepeer mode, since it confuses CodePeer and + does not bring useful info. + +2011-08-02 Ed Falis + + * init.c: initialize fp hw on MILS. + +2011-08-02 Ed Schonberg + + * errout.adb (First_Node): for bodies, return the node itself (small + optimization). For other nodes, do not check source_unit if the node + comes from Standard. + 2011-08-02 Robert Dewar * exp_ch3.adb: Minor comment additions. diff --git a/gcc/ada/errout.adb b/gcc/ada/errout.adb index 59babb14581..cfe1d038e1a 100644 --- a/gcc/ada/errout.adb +++ b/gcc/ada/errout.adb @@ -1332,6 +1332,7 @@ package body Errout is -- best to just ignore this situation. if Loc < Eloc + and then Loc /= Standard_Location and then Get_Source_File_Index (Loc) = Sfile then Earliest := Original_Node (N); @@ -1344,10 +1345,17 @@ package body Errout is -- Start of processing for First_Node begin - Earliest := Original_Node (C); - Eloc := Sloc (Earliest); - Search_Tree_First (Original_Node (C)); - return Earliest; + if Nkind (C) in N_Unit_Body + or else Nkind (C) in N_Proper_Body + then + return C; + + else + Earliest := Original_Node (C); + Eloc := Sloc (Earliest); + Search_Tree_First (Original_Node (C)); + return Earliest; + end if; end First_Node; ---------------- diff --git a/gcc/ada/exp_ch5.adb b/gcc/ada/exp_ch5.adb index 854b1a0ca89..de277662978 100644 --- a/gcc/ada/exp_ch5.adb +++ b/gcc/ada/exp_ch5.adb @@ -2859,13 +2859,10 @@ package body Exp_Ch5 is -- with the obvious replacements if "reverse" is specified. declare - Element_Type : constant Entity_Id := Etype (Id); - Pack : constant Entity_Id := Scope (Base_Type (Typ)); - Name_Init : Name_Id; - Name_Step : Name_Id; - Cond : Node_Id; - Cursor_Decl : Node_Id; - Renaming_Decl : Node_Id; + Element_Type : constant Entity_Id := Etype (Id); + Pack : constant Entity_Id := Scope (Base_Type (Typ)); + Name_Init : Name_Id; + Name_Step : Name_Id; begin Stats := Statements (N); @@ -2876,52 +2873,24 @@ package body Exp_Ch5 is Cursor := Id; end if; - if Reverse_Present (I_Spec) then - - -- Must verify that the container has a reverse iterator ??? + -- Must verify that the container has a reverse iterator ??? + if Reverse_Present (I_Spec) then Name_Init := Name_Last; Name_Step := Name_Previous; - else Name_Init := Name_First; Name_Step := Name_Next; end if; - -- C : Cursor_Type := Container.First; - - Cursor_Decl := - Make_Object_Declaration (Loc, - Defining_Identifier => Cursor, - Object_Definition => - Make_Selected_Component (Loc, - Prefix => New_Occurrence_Of (Pack, Loc), - Selector_Name => Make_Identifier (Loc, Name_Cursor)), - Expression => - Make_Selected_Component (Loc, - Prefix => Relocate_Node (Container), - Selector_Name => Make_Identifier (Loc, Name_Init))); - - Insert_Action (N, Cursor_Decl); - - -- while C /= No_Element loop - - Cond := Make_Op_Ne (Loc, - Left_Opnd => New_Occurrence_Of (Cursor, Loc), - Right_Opnd => Make_Selected_Component (Loc, - Prefix => New_Occurrence_Of (Pack, Loc), - Selector_Name => - Make_Identifier (Loc, Name_No_Element))); + -- The code below only handles containers where Element is not a + -- primitive operation of the container. This excludes for now the + -- Hi-Lite formal containers. Generate: + -- + -- Id : Element_Type renames Container.Element (Cursor); if Of_Present (I_Spec) then - - -- Id : Element_Type renames Container.Element (Cursor); - - -- The code below only handles containers where Element is not - -- a primitive operation of the container. This excludes - -- for now the Hi-Lite formal containers. - - Renaming_Decl := + Prepend_To (Stats, Make_Object_Renaming_Declaration (Loc, Defining_Identifier => Id, Subtype_Mark => @@ -2934,9 +2903,7 @@ package body Exp_Ch5 is Selector_Name => Make_Identifier (Loc, Chars => Name_Element)), Expressions => - New_List (New_Occurrence_Of (Cursor, Loc)))); - - Prepend (Renaming_Decl, Stats); + New_List (New_Occurrence_Of (Cursor, Loc))))); end if; -- For both iterator forms, add call to step operation (Next or @@ -2951,11 +2918,52 @@ package body Exp_Ch5 is Parameter_Associations => New_List (New_Occurrence_Of (Cursor, Loc)))); - New_Loop := Make_Loop_Statement (Loc, - Iteration_Scheme => - Make_Iteration_Scheme (Loc, Condition => Cond), - Statements => Stats, - End_Label => Empty); + -- Generate: + -- while Cursor /= No_Element loop + -- + -- end loop; + + New_Loop := + Make_Loop_Statement (Loc, + Iteration_Scheme => + Make_Iteration_Scheme (Loc, + Condition => + Make_Op_Ne (Loc, + Left_Opnd => + New_Occurrence_Of (Cursor, Loc), + Right_Opnd => + Make_Selected_Component (Loc, + Prefix => + New_Occurrence_Of (Pack, Loc), + Selector_Name => + Make_Identifier (Loc, Name_No_Element)))), + Statements => Stats, + End_Label => Empty); + + -- When the cursor is internally generated, associate it with the + -- loop statement. + + if Of_Present (I_Spec) then + Set_Ekind (Cursor, E_Variable); + Set_Related_Expression (Cursor, New_Loop); + end if; + + -- Create the declaration of the cursor and insert it before the + -- source loop. Generate: + -- + -- C : Cursor_Type := Container.First; + + Insert_Action (N, + Make_Object_Declaration (Loc, + Defining_Identifier => Cursor, + Object_Definition => + Make_Selected_Component (Loc, + Prefix => New_Occurrence_Of (Pack, Loc), + Selector_Name => Make_Identifier (Loc, Name_Cursor)), + Expression => + Make_Selected_Component (Loc, + Prefix => Relocate_Node (Container), + Selector_Name => Make_Identifier (Loc, Name_Init)))); -- If the range of iteration is given by a function call that -- returns a container, the finalization actions have been saved diff --git a/gcc/ada/exp_ch7.adb b/gcc/ada/exp_ch7.adb index 97ec568e0e9..a344d931879 100644 --- a/gcc/ada/exp_ch7.adb +++ b/gcc/ada/exp_ch7.adb @@ -1517,9 +1517,10 @@ package body Exp_Ch7 is if Present (Len_Ref) then Action := Make_Implicit_If_Statement (N, - Condition => Make_Op_Gt (Loc, - Left_Opnd => Len_Ref, - Right_Opnd => Make_Integer_Literal (Loc, 0)), + Condition => + Make_Op_Gt (Loc, + Left_Opnd => Len_Ref, + Right_Opnd => Make_Integer_Literal (Loc, 0)), Then_Statements => New_List (Action)); end if; @@ -3417,14 +3418,44 @@ package body Exp_Ch7 is -- Finalize_One (_v2); procedure Wrap_Transient_Declaration (N : Node_Id) is - S : Entity_Id; - LC : Entity_Id := Empty; - Nodes : List_Id; Loc : constant Source_Ptr := Sloc (N); - First_Decl_Loc : Source_Ptr; + Next_N : constant Node_Id := Next (N); Enclosing_S : Entity_Id; + First_Decl_Loc : Source_Ptr; + LC : Entity_Id := Empty; + Nodes : List_Id; + S : Entity_Id; Uses_SS : Boolean; - Next_N : constant Node_Id := Next (N); + + function Is_Container_Cursor (Decl : Node_Id) return Boolean; + -- Determine whether object declaration Decl is a cursor used to iterate + -- over an Ada 2005/12 container. + + ------------------------- + -- Is_Container_Cursor -- + ------------------------- + + function Is_Container_Cursor (Decl : Node_Id) return Boolean is + Def_Id : constant Entity_Id := Defining_Identifier (Decl); + Expr : constant Node_Id := Expression (Decl); + + begin + -- A cursor declaration appears in the following form: + -- + -- Index : Pack.Cursor := First (...); + + return + Chars (Etype (Def_Id)) = Name_Cursor + and then Present (Expr) + and then Nkind (Expr) = N_Function_Call + and then Chars (Name (Expr)) = Name_First + and then + (Nkind (Parent (Decl)) = N_Expression_With_Actions + or else + Nkind (Related_Expression (Def_Id)) = N_Loop_Statement); + end Is_Container_Cursor; + + -- Start of processing for Wrap_Transient_Declaration begin S := Current_Scope; @@ -3503,6 +3534,29 @@ package body Exp_Ch7 is then null; + -- The declaration of a container cursor is a special context where + -- the finalization of the list controller needs to be supressed. In + -- the following simplified example: + -- + -- LC : Simple_List_Controller; + -- Temp : Ptr_Typ := Container_Creator_Function'Reference; + -- Deep_Tag_Attach (Temp, LC); + -- Obj : Pack.Cursor := First (Temp.all); + -- Finalize (LC); + -- + -- + -- the finalization of the list controller destroys the contents of + -- container Temp, and as a result Obj points to nothing. Note that + -- Temp will be finalized by the finalization list of the enclosing + -- scope. + + elsif Ada_Version >= Ada_2012 + and then Is_Container_Cursor (N) + then + null; + + -- Finalize the list controller + else Nodes := Make_Final_Call diff --git a/gcc/ada/init.c b/gcc/ada/init.c index 822837c0d19..df0bb932ca7 100644 --- a/gcc/ada/init.c +++ b/gcc/ada/init.c @@ -2026,7 +2026,7 @@ __gnat_init_float (void) to get correct Ada semantics. Note that for AE653 vThreads, the HW overflow settings are an OS configuration issue. The instructions below have no effect. */ -#if defined (_ARCH_PPC) && !defined (_SOFT_FLOAT) && !defined (VTHREADS) +#if defined (_ARCH_PPC) && !defined (_SOFT_FLOAT) && (!defined (VTHREADS) || defined (__VXWORKSMILS__)) #if defined (__SPE__) { const unsigned long spefscr_mask = 0xfffffff3; diff --git a/gcc/ada/make.adb b/gcc/ada/make.adb index d1fec921953..642281d2fd2 100644 --- a/gcc/ada/make.adb +++ b/gcc/ada/make.adb @@ -3823,7 +3823,8 @@ package body Make is else declare Parent_Directory : constant String := - Get_Name_String (Project.Directory.Display_Name); + Get_Name_String + (Project.Directory.Display_Name); begin return Parent_Directory & Path_Name; diff --git a/gcc/ada/makeutl.adb b/gcc/ada/makeutl.adb index e5c5a9e4bdc..bf352d774eb 100644 --- a/gcc/ada/makeutl.adb +++ b/gcc/ada/makeutl.adb @@ -422,7 +422,7 @@ package body Makeutl is declare ALI_Path_Name : constant String := - Name_Buffer (1 .. Name_Len); + Name_Buffer (1 .. Name_Len); begin if Is_Regular_File diff --git a/gcc/ada/opt.ads b/gcc/ada/opt.ads index b05dda45b12..732fc4d97f8 100644 --- a/gcc/ada/opt.ads +++ b/gcc/ada/opt.ads @@ -1887,8 +1887,7 @@ package Opt is -- belong to the ALFA subset of Ada. Set by debuf flag -gnatd.F. SPARK_Mode : Boolean := False; - -- Reject constructs not allowed by SPARK. Set by flag -gnatd.D or - -- by pragma SPARK_95. + -- Reject constructs not allowed by SPARK. Set by flag -gnatd.D. private diff --git a/gcc/ada/par-ch3.adb b/gcc/ada/par-ch3.adb index a9cc8c95dda..0d62eb8b0fa 100644 --- a/gcc/ada/par-ch3.adb +++ b/gcc/ada/par-ch3.adb @@ -2544,11 +2544,6 @@ package body Ch3 is Expr_Node := P_Expression; Check_Simple_Expression_In_Ada_83 (Expr_Node); - if Expr_Form = EF_Non_Simple then - Check_Formal_Restriction - ("this expression must be parenthesized", Expr_Node); - end if; - Set_Delta_Expression (Constraint_Node, Expr_Node); if Token = Tok_Range then @@ -3082,12 +3077,6 @@ package body Ch3 is Expr_Node := P_Expression_Or_Range_Attribute; - if Expr_Form /= EF_Simple_Name - and then Formal_Verification_Mode - then - Error_Msg_SC ("|~~subtype mark required"); - end if; - if Expr_Form = EF_Range_Attr then Append (Expr_Node, Constr_List); diff --git a/gcc/ada/par-ch4.adb b/gcc/ada/par-ch4.adb index 338ee641593..4c25c3ca649 100644 --- a/gcc/ada/par-ch4.adb +++ b/gcc/ada/par-ch4.adb @@ -209,21 +209,8 @@ package body Ch4 is -- designator. if Token not in Token_Class_Desig then - - -- Selector name cannot be a character literal in SPARK - - if SPARK_Mode and then Token = Tok_Char_Literal then - Error_Msg_SC ("|~~character literal cannot be prefixed"); - end if; - goto Scan_Name_Extension_Dot; else - -- Selector name cannot be an operator symbol in SPARK - - if SPARK_Mode and then Token = Tok_Operator_Symbol then - Error_Msg_SC ("|~~operator symbol cannot be prefixed"); - end if; - Prefix_Node := Name_Node; Name_Node := New_Node (N_Selected_Component, Prev_Token_Ptr); Set_Prefix (Name_Node, Prefix_Node); @@ -682,11 +669,6 @@ package body Ch4 is -- Test for => (allow := as error substitute) if Token = Tok_Arrow or else Token = Tok_Colon_Equal then - if SPARK_Mode then - Error_Msg_SP ("|~~no mixing of positional and named " - & "parameter association"); - end if; - Restore_Scan_State (Scan_State); -- to Id goto LP_State_Call; diff --git a/gcc/ada/par-ch5.adb b/gcc/ada/par-ch5.adb index 3c8f2d5f562..373da1ff6d6 100644 --- a/gcc/ada/par-ch5.adb +++ b/gcc/ada/par-ch5.adb @@ -2049,9 +2049,7 @@ package body Ch5 is procedure Parse_Decls_Begin_End (Parent : Node_Id) is Body_Decl : Node_Id; - Body_Sloc : Source_Ptr; Decls : List_Id; - Decl : Node_Id; Parent_Nkind : Node_Kind; Spec_Node : Node_Id; HSS : Node_Id; @@ -2110,55 +2108,8 @@ package body Ch5 is begin Decls := P_Declarative_Part; - -- Check for misplacement of later vs basic declarations in Ada 83. - -- The same is true for the SPARK mode: although SPARK 95 removes - -- the distinction between initial and later declarative items, - -- the distinction remains in the Examiner. (JB01-005) - -- Note that the Examiner does not count package declarations in later - -- declarative items. - - if Ada_Version = Ada_83 or else SPARK_Mode then - Decl := First (Decls); - - -- Loop through sequence of basic declarative items - - Outer : while Present (Decl) loop - if Nkind (Decl) /= N_Subprogram_Body - and then Nkind (Decl) /= N_Package_Body - and then Nkind (Decl) /= N_Task_Body - and then Nkind (Decl) not in N_Body_Stub - then - Next (Decl); - - -- Once a body is encountered, we only allow later declarative - -- items. The inner loop checks the rest of the list. - - else - Body_Sloc := Sloc (Decl); - - Inner : while Present (Decl) loop - if (Nkind (Decl) not in N_Later_Decl_Item - or else (SPARK_Mode - and then - Nkind (Decl) = N_Package_Declaration)) - and then Nkind (Decl) /= N_Pragma - then - if Ada_Version = Ada_83 then - Error_Msg_Sloc := Body_Sloc; - Error_Msg_N - ("(Ada 83) decl cannot appear after body#", Decl); - else - pragma Assert (SPARK_Mode); - Error_Msg_Sloc := Body_Sloc; - Error_Msg_F - ("|~~decl cannot appear after body#", Decl); - end if; - end if; - - Next (Decl); - end loop Inner; - end if; - end loop Outer; + if Ada_Version = Ada_83 then + Check_Later_Vs_Basic_Declarations (Decls, During_Parsing => True); end if; -- Here is where we deal with the case of IS used instead of semicolon. diff --git a/gcc/ada/par-endh.adb b/gcc/ada/par-endh.adb index 8b0897e1a83..84833cd8dd3 100644 --- a/gcc/ada/par-endh.adb +++ b/gcc/ada/par-endh.adb @@ -374,17 +374,6 @@ package body Endh is Set_Comes_From_Source (End_Labl, False); End_Labl_Present := False; - -- In SPARK mode, no missing label is allowed - - if SPARK_Mode - and then End_Type = E_Name - and then Explicit_Start_Label (Scope.Last) - then - Error_Msg_Node_1 := Scope.Table (Scope.Last).Labl; - Error_Msg_SP -- CODEFIX - ("|~~`END &` required"); - end if; - -- Do style check for missing label if Style_Check diff --git a/gcc/ada/par-prag.adb b/gcc/ada/par-prag.adb index 10237a55127..b3dab608a32 100644 --- a/gcc/ada/par-prag.adb +++ b/gcc/ada/par-prag.adb @@ -89,11 +89,11 @@ function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is procedure Process_Restrictions_Or_Restriction_Warnings; -- Common processing for Restrictions and Restriction_Warnings pragmas. - -- This routine only processes the cases of No_Obsolescent_Features and - -- SPARK, which are the only restrictions that have syntactic effects. No - -- general error checking is done, since this will be done in Sem_Prag. The - -- other case processed is pragma Restrictions No_Dependence, since - -- otherwise this is done too late. + -- This routine only processes the case of No_Obsolescent_Features, which + -- is the only restriction that has syntactic effects. No general error + -- checking is done, since this will be done in Sem_Prag. The other case + -- processed is pragma Restrictions No_Dependence, since otherwise this is + -- done too late. ---------- -- Arg1 -- @@ -230,10 +230,6 @@ function Prag (Pragma_Node : Node_Id; Semi : Source_Ptr) return Node_Id is Set_Restriction (No_Obsolescent_Features, Pragma_Node); Restriction_Warnings (No_Obsolescent_Features) := Prag_Id = Pragma_Restriction_Warnings; - when SPARK => - SPARK_Mode := True; - Set_Error_Msg_Lang ("spark"); - Formal_Verification_Mode := True; when others => null; end case; diff --git a/gcc/ada/par.adb b/gcc/ada/par.adb index 3b0309fbeb6..1f5eb5797bd 100644 --- a/gcc/ada/par.adb +++ b/gcc/ada/par.adb @@ -41,6 +41,7 @@ with Par_SCO; use Par_SCO; with Restrict; use Restrict; with Scans; use Scans; with Scn; use Scn; +with Sem_Util; use Sem_Util; with Sinput; use Sinput; with Sinput.L; use Sinput.L; with Sinfo; use Sinfo; diff --git a/gcc/ada/prj-proc.adb b/gcc/ada/prj-proc.adb index 0553d33ff8a..f007a718948 100644 --- a/gcc/ada/prj-proc.adb +++ b/gcc/ada/prj-proc.adb @@ -2694,7 +2694,6 @@ package body Prj.Proc is Virtual_Prefix then Project.Virtual := True; - end if; Project.Path.Display_Name := diff --git a/gcc/ada/restrict.adb b/gcc/ada/restrict.adb index 215a21f505f..1190f690b21 100644 --- a/gcc/ada/restrict.adb +++ b/gcc/ada/restrict.adb @@ -109,24 +109,59 @@ package body Restrict is -- Check_Formal_Restriction -- ------------------------------ - procedure Check_Formal_Restriction (Msg : String; N : Node_Id) is + procedure Check_Formal_Restriction + (Msg : String; + N : Node_Id; + Force : Boolean := False) + is + Msg_Issued : Boolean; + Save_Error_Msg_Sloc : Source_Ptr; begin - if Formal_Verification_Mode - and then Comes_From_Source (Original_Node (N)) - then - Error_Msg_F ("|~~" & Msg, N); + if Force or else Comes_From_Source (Original_Node (N)) then + + -- Since the call to Restriction_Msg from Check_Restriction may set + -- Error_Msg_Sloc to the location of the pragma restriction, save and + -- restore the previous value of the global variable around the call. + + -- ??? N in call to Check_Restriction should be First_Node (N), but + -- this causes an exception to be raised when analyzing osint.adb. + -- To be modified. + + Save_Error_Msg_Sloc := Error_Msg_Sloc; + Check_Restriction (Msg_Issued, SPARK, N); -- N -> First_Node (N) + Error_Msg_Sloc := Save_Error_Msg_Sloc; + + if Msg_Issued then + Error_Msg_F ("\\| " & Msg, N); + elsif SPARK_Mode then + Error_Msg_F ("|~~" & Msg, N); + end if; end if; end Check_Formal_Restriction; procedure Check_Formal_Restriction (Msg1, Msg2 : String; N : Node_Id) is + Msg_Issued : Boolean; + Save_Error_Msg_Sloc : Source_Ptr; begin pragma Assert (Msg2'Length /= 0 and then Msg2 (Msg2'First) = '\'); - if Formal_Verification_Mode - and then Comes_From_Source (Original_Node (N)) - then - Error_Msg_F ("|~~" & Msg1, N); - Error_Msg_F (Msg2, N); + if Comes_From_Source (Original_Node (N)) then + + -- Since the call to Restriction_Msg from Check_Restriction may set + -- Error_Msg_Sloc to the location of the pragma restriction, save and + -- restore the previous value of the global variable around the call. + + Save_Error_Msg_Sloc := Error_Msg_Sloc; + Check_Restriction (Msg_Issued, SPARK, First_Node (N)); + Error_Msg_Sloc := Save_Error_Msg_Sloc; + + if Msg_Issued then + Error_Msg_F ("\\| " & Msg1, N); + Error_Msg_F (Msg2, N); + elsif SPARK_Mode then + Error_Msg_F ("|~~" & Msg1, N); + Error_Msg_F (Msg2, N); + end if; end if; end Check_Formal_Restriction; @@ -255,6 +290,18 @@ package body Restrict is (R : Restriction_Id; N : Node_Id; V : Uint := Uint_Minus_1) + is + Msg_Issued : Boolean; + pragma Unreferenced (Msg_Issued); + begin + Check_Restriction (Msg_Issued, R, N, V); + end Check_Restriction; + + procedure Check_Restriction + (Msg_Issued : out Boolean; + R : Restriction_Id; + N : Node_Id; + V : Uint := Uint_Minus_1) is VV : Integer; -- V converted to integer form. If V is greater than Integer'Last, @@ -323,6 +370,8 @@ package body Restrict is -- Start of processing for Check_Restriction begin + Msg_Issued := False; + -- In CodePeer mode, we do not want to check for any restriction, or set -- additional restrictions other than those already set in gnat1drv.adb -- so that we have consistency between each compilation. @@ -386,6 +435,7 @@ package body Restrict is and then Restrictions.Value (R) = 0) or else Restrictions.Count (R) > Restrictions.Value (R) then + Msg_Issued := True; Restriction_Msg (R, N); end if; end Check_Restriction; diff --git a/gcc/ada/restrict.ads b/gcc/ada/restrict.ads index c006fd6feb1..f0dcb31f275 100644 --- a/gcc/ada/restrict.ads +++ b/gcc/ada/restrict.ads @@ -195,11 +195,13 @@ package Restrict is -- If a restriction exists post error message at the given node. procedure Check_Restriction - (R : Restriction_Id; - N : Node_Id; - V : Uint := Uint_Minus_1); + (Msg_Issued : out Boolean; + R : Restriction_Id; + N : Node_Id; + V : Uint := Uint_Minus_1); -- Checks that the given restriction is not set, and if it is set, an - -- appropriate message is posted on the given node. Also records the + -- appropriate message is posted on the given node, in which case + -- Msg_Issued is set to True (and False otherwise). Also records the -- violation in the appropriate internal arrays. Note that it is mandatory -- to always use this routine to check if a restriction is violated. Such -- checks must never be done directly by the caller, since otherwise @@ -208,6 +210,13 @@ package Restrict is -- indicates the exact count for the violation. If the exact count is not -- known, V is left at its default of -1 which indicates an unknown count. + procedure Check_Restriction + (R : Restriction_Id; + N : Node_Id; + V : Uint := Uint_Minus_1); + -- Wrapper on Check_Restriction with Msg_Issued, with the out-parameter + -- being ignored here. + procedure Check_Restriction_No_Dependence (U : Node_Id; Err : Node_Id); -- Called when a dependence on a unit is created (either implicitly, or by -- an explicit WITH clause). U is a node for the unit involved, and Err @@ -219,11 +228,14 @@ package Restrict is -- an elaboration routine. If elaboration code is not allowed, an error -- message is posted on the node given as argument. - procedure Check_Formal_Restriction (Msg : String; N : Node_Id); + procedure Check_Formal_Restriction + (Msg : String; + N : Node_Id; + Force : Boolean := False); -- Node N represents a construct not allowed in formal mode. If this is a - -- source node, then an error is issued on N (using Err_Msg_F), prepending - -- "|~~" (error not serious, language prepended). Call has no effect if - -- not in formal mode, or if N does not come originally from source. + -- source node, or if the restriction is forced (Force = True), and the + -- SPARK restriction is set, then an error is issued on N. Msg is appended + -- to the restriction failure message. procedure Check_Formal_Restriction (Msg1, Msg2 : String; N : Node_Id); -- Same as Check_Formal_Restriction except there is a continuation message diff --git a/gcc/ada/sem_aggr.adb b/gcc/ada/sem_aggr.adb index 28193ef0ce4..d76c35f7d58 100644 --- a/gcc/ada/sem_aggr.adb +++ b/gcc/ada/sem_aggr.adb @@ -3173,7 +3173,7 @@ package body Sem_Aggr is if Present (Expressions (N)) then Check_Formal_Restriction - ("named association cannot follow positional association", + ("named association cannot follow positional one", First (Choices (First (Component_Associations (N))))); end if; diff --git a/gcc/ada/sem_attr.adb b/gcc/ada/sem_attr.adb index 08761d8fd60..4ff4ff4e68c 100644 --- a/gcc/ada/sem_attr.adb +++ b/gcc/ada/sem_attr.adb @@ -2071,16 +2071,15 @@ package body Sem_Attr is -- In SPARK or ALFA, attributes of private types are only allowed if -- the full type declaration is visible. - if Formal_Verification_Mode - and then Comes_From_Source (Original_Node (N)) - and then Is_Entity_Name (P) + if Is_Entity_Name (P) + and then Present (Entity (P)) -- needed in some cases and then Is_Type (Entity (P)) and then Is_Private_Type (P_Type) and then not In_Open_Scopes (Scope (P_Type)) and then not In_Spec_Expression then - Error_Msg_FE - ("|~~invisible attribute of}", N, First_Subtype (P_Type)); + Error_Msg_Node_1 := First_Subtype (P_Type); + Check_Formal_Restriction ("invisible attribute of}", N); end if; -- Remaining processing depends on attribute diff --git a/gcc/ada/sem_ch13.adb b/gcc/ada/sem_ch13.adb index a1af56f5aec..901b9e033dc 100644 --- a/gcc/ada/sem_ch13.adb +++ b/gcc/ada/sem_ch13.adb @@ -2843,7 +2843,7 @@ package body Sem_Ch13 is -- Pointer to node for literal providing max value begin - if Ignore_Rep_Clauses then + if Ignore_Rep_Clauses or else CodePeer_Mode then return; end if; diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb index 0001ddcef0e..16a6b7dc77f 100644 --- a/gcc/ada/sem_ch3.adb +++ b/gcc/ada/sem_ch3.adb @@ -1782,7 +1782,7 @@ package body Sem_Ch3 is Enter_Name (Id); if Present (Typ) then - if Nkind (Typ) /= N_Identifier then + if not Nkind_In (Typ, N_Identifier, N_Expanded_Name) then Check_Formal_Restriction ("subtype mark required", Typ); end if; @@ -2038,6 +2038,10 @@ package body Sem_Ch3 is -- Start of processing for Analyze_Declarations begin + if SPARK_Mode or else Restriction_Check_Required (SPARK) then + Check_Later_Vs_Basic_Declarations (L, During_Parsing => False); + end if; + D := First (L); while Present (D) loop @@ -3032,11 +3036,11 @@ package body Sem_Ch3 is -- mark and shall not be unconstrained. (The only exception to this -- is the admission of declarations of constants of type String.) - if not Nkind_In (Object_Definition (N), N_Identifier, - N_Expanded_Name) + if not + Nkind_In (Object_Definition (N), N_Identifier, N_Expanded_Name) then Check_Formal_Restriction - ("subtype mark expected", Object_Definition (N)); + ("subtype mark required", Object_Definition (N)); elsif Is_Array_Type (T) and then not Is_Constrained (T) @@ -3171,7 +3175,9 @@ package body Sem_Ch3 is if Nkind (Original_Node (N)) = N_Object_Declaration and then Comes_From_Source (Original_Node (N)) - and then Formal_Verification_Mode -- only call test if needed + -- only call test if needed + and then (Formal_Verification_Mode + or else Restriction_Check_Required (SPARK)) and then not Is_SPARK_Initialization_Expr (E) then Check_Formal_Restriction @@ -4015,34 +4021,45 @@ package body Sem_Ch3 is ("subtype of Boolean cannot have constraint", N); end if; - -- String subtype must have a lower bound of 1 in SPARK/ALFA. Note that - -- we do not need to test for the non-static case here, since that was - -- already taken care of in Process_Range_Expr_In_Decl. - - if Base_Type (T) = Standard_String - and then Nkind (Subtype_Indication (N)) = N_Subtype_Indication - then + if Nkind (Subtype_Indication (N)) = N_Subtype_Indication then declare - Cstr : constant Node_Id := Constraint (Subtype_Indication (N)); - Drange : Node_Id; - Low : Node_Id; + Cstr : constant Node_Id := Constraint (Subtype_Indication (N)); + One_Cstr : Node_Id; + Low : Node_Id; + High : Node_Id; begin - if Nkind (Cstr) = N_Index_Or_Discriminant_Constraint - and then List_Length (Constraints (Cstr)) = 1 - then - Drange := First (Constraints (Cstr)); + if Nkind (Cstr) = N_Index_Or_Discriminant_Constraint then + One_Cstr := First (Constraints (Cstr)); + while Present (One_Cstr) loop - if Nkind (Drange) = N_Range then - Low := Low_Bound (Drange); + -- Index or discriminant constraint in SPARK or ALFA must be + -- a subtype mark. - if Is_OK_Static_Expression (Low) - and then Expr_Value (Low) /= 1 + if not + Nkind_In (One_Cstr, N_Identifier, N_Expanded_Name) then Check_Formal_Restriction - ("String subtype must have lower bound of 1", N); + ("subtype mark required", One_Cstr); + + -- String subtype must have a lower bound of 1 in SPARK. + -- Note that we do not need to test for the non-static case + -- here, since that was already taken care of in + -- Process_Range_Expr_In_Decl. + + elsif Base_Type (T) = Standard_String then + Get_Index_Bounds (One_Cstr, Low, High); + + if Is_OK_Static_Expression (Low) + and then Expr_Value (Low) /= 1 + then + Check_Formal_Restriction + ("String subtype must have lower bound of 1", N); + end if; end if; - end if; + + Next (One_Cstr); + end loop; end if; end; end if; @@ -4573,14 +4590,14 @@ package body Sem_Ch3 is -- as prefix. if No (T) then - Related_Id := Defining_Identifier (P); + Related_Id := Defining_Identifier (P); else Related_Id := T; end if; Nb_Index := 1; while Present (Index) loop - if Nkind (Index) /= N_Identifier then + if not Nkind_In (Index, N_Identifier, N_Expanded_Name) then Check_Formal_Restriction ("subtype mark required", Index); end if; @@ -4655,7 +4672,7 @@ package body Sem_Ch3 is -- Process subtype indication if one is present if Present (Component_Typ) then - if Nkind (Component_Typ) /= N_Identifier then + if not Nkind_In (Component_Typ, N_Identifier, N_Expanded_Name) then Check_Formal_Restriction ("subtype mark required", Component_Typ); end if; diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb index 4d179d0ebe5..f0b5dd600b0 100644 --- a/gcc/ada/sem_ch4.adb +++ b/gcc/ada/sem_ch4.adb @@ -788,6 +788,10 @@ package body Sem_Ch4 is -- Flag indicates whether an interpretation of the prefix is a -- parameterless call that returns an access_to_subprogram. + procedure Check_Mixed_Parameter_And_Named_Associations; + -- Check that parameter and named associations are not mixed. This is + -- a restriction in SPARK mode. + function Name_Denotes_Function return Boolean; -- If the type of the name is an access to subprogram, this may be the -- type of a name, or the return type of the function being called. If @@ -798,6 +802,33 @@ package body Sem_Ch4 is procedure No_Interpretation; -- Output error message when no valid interpretation exists + -------------------------------------------------- + -- Check_Mixed_Parameter_And_Named_Associations -- + -------------------------------------------------- + + procedure Check_Mixed_Parameter_And_Named_Associations is + Actual : Node_Id; + Named_Seen : Boolean; + begin + Actual := First (Actuals); + Named_Seen := False; + while Present (Actual) loop + case Nkind (Actual) is + when N_Parameter_Association => + if Named_Seen then + Check_Formal_Restriction + ("named association cannot follow positional one", + Actual); + exit; + end if; + when others => + Named_Seen := True; + end case; + + Next (Actual); + end loop; + end Check_Mixed_Parameter_And_Named_Associations; + --------------------------- -- Name_Denotes_Function -- --------------------------- @@ -855,6 +886,10 @@ package body Sem_Ch4 is -- Start of processing for Analyze_Call begin + if SPARK_Mode or else Restriction_Check_Required (SPARK) then + Check_Mixed_Parameter_And_Named_Associations; + end if; + -- Initialize the type of the result of the call to the error type, -- which will be reset if the type is successfully resolved. @@ -1887,8 +1922,7 @@ package body Sem_Ch4 is --------------------------- procedure Process_Function_Call is - Actual : Node_Id; - + Actual : Node_Id; begin Change_Node (N, N_Function_Call); Set_Name (N, P); diff --git a/gcc/ada/sem_ch5.adb b/gcc/ada/sem_ch5.adb index 562fad6affa..4c92b6ed0b9 100644 --- a/gcc/ada/sem_ch5.adb +++ b/gcc/ada/sem_ch5.adb @@ -37,6 +37,7 @@ with Nlists; use Nlists; with Nmake; use Nmake; with Opt; use Opt; with Restrict; use Restrict; +with Rident; use Rident; with Rtsfind; use Rtsfind; with Sem; use Sem; with Sem_Aux; use Sem_Aux; @@ -2501,8 +2502,8 @@ package body Sem_Ch5 is ---------------------------- procedure Check_Unreachable_Code (N : Node_Id) is - Error_Loc : Source_Ptr; - P : Node_Id; + Error_Node : Node_Id; + P : Node_Id; begin if Is_List_Member (N) @@ -2518,7 +2519,10 @@ package body Sem_Ch5 is -- someone could branch to the label, so we just ignore it, unless -- we are in formal mode where goto statements are not allowed. - if Nkind (Nxt) = N_Label and then not Formal_Verification_Mode then + if Nkind (Nxt) = N_Label + and then not (Formal_Verification_Mode + or else Restriction_Check_Required (SPARK)) + then return; -- Otherwise see if we have a real statement following us @@ -2539,7 +2543,7 @@ package body Sem_Ch5 is -- at removing warnings in deleted code, and this is one -- warning we would prefer NOT to have removed. - Error_Loc := Sloc (Nxt); + Error_Node := Nxt; -- If we have unreachable code, analyze and remove the -- unreachable code, since it is useless and we don't @@ -2574,11 +2578,11 @@ package body Sem_Ch5 is -- Now issue the warning (or error in formal mode) - if Formal_Verification_Mode then - Error_Msg - ("|~~unreachable code is not allowed", Error_Loc); + if SPARK_Mode or else Restriction_Check_Required (SPARK) then + Check_Formal_Restriction + ("unreachable code is not allowed", Error_Node); else - Error_Msg ("?unreachable code!", Error_Loc); + Error_Msg ("?unreachable code!", Sloc (Error_Node)); end if; end if; diff --git a/gcc/ada/sem_ch8.adb b/gcc/ada/sem_ch8.adb index 5915ed21b19..a07449c0097 100644 --- a/gcc/ada/sem_ch8.adb +++ b/gcc/ada/sem_ch8.adb @@ -5345,13 +5345,26 @@ package body Sem_Ch8 is if Nkind (P) = N_Error then return; + end if; + + -- Selector name cannot be a character literal or an operator symbol in + -- SPARK. + + if SPARK_Mode or else Restriction_Check_Required (SPARK) then + if Nkind (Selector_Name (N)) = N_Character_Literal then + Check_Formal_Restriction + ("character literal cannot be prefixed", N); + elsif Nkind (Selector_Name (N)) = N_Operator_Symbol then + Check_Formal_Restriction ("operator symbol cannot be prefixed", N); + end if; + end if; -- If the selector already has an entity, the node has been constructed -- in the course of expansion, and is known to be valid. Do not verify -- that it is defined for the type (it may be a private component used -- in the expansion of record equality). - elsif Present (Entity (Selector_Name (N))) then + if Present (Entity (Selector_Name (N))) then if No (Etype (N)) or else Etype (N) = Any_Type then @@ -5474,13 +5487,13 @@ package body Sem_Ch8 is -- Selector name is restricted in SPARK - if SPARK_Mode then + if SPARK_Mode or else Restriction_Check_Required (SPARK) then if Is_Subprogram (P_Name) then - Error_Msg_F - ("|~~prefix of expanded name cannot be a subprogram", P); + Check_Formal_Restriction + ("prefix of expanded name cannot be a subprogram", P); elsif Ekind (P_Name) = E_Loop then - Error_Msg_F - ("|~~prefix of expanded name cannot be a loop statement", P); + Check_Formal_Restriction + ("prefix of expanded name cannot be a loop statement", P); end if; end if; diff --git a/gcc/ada/sem_util.adb b/gcc/ada/sem_util.adb index bddd50f3dc7..a16c06a7113 100644 --- a/gcc/ada/sem_util.adb +++ b/gcc/ada/sem_util.adb @@ -41,6 +41,7 @@ with Nlists; use Nlists; with Output; use Output; with Opt; use Opt; with Restrict; use Restrict; +with Rident; use Rident; with Rtsfind; use Rtsfind; with Sem; use Sem; with Sem_Aux; use Sem_Aux; @@ -1100,6 +1101,61 @@ package body Sem_Util is end if; end Cannot_Raise_Constraint_Error; + --------------------------------------- + -- Check_Later_Vs_Basic_Declarations -- + --------------------------------------- + + procedure Check_Later_Vs_Basic_Declarations + (Decls : List_Id; + During_Parsing : Boolean) + is + Body_Sloc : Source_Ptr; + Decl : Node_Id; + begin + Decl := First (Decls); + + -- Loop through sequence of basic declarative items + + Outer : while Present (Decl) loop + if Nkind (Decl) /= N_Subprogram_Body + and then Nkind (Decl) /= N_Package_Body + and then Nkind (Decl) /= N_Task_Body + and then Nkind (Decl) not in N_Body_Stub + then + Next (Decl); + + -- Once a body is encountered, we only allow later declarative + -- items. The inner loop checks the rest of the list. + + else + Body_Sloc := Sloc (Decl); + + Inner : while Present (Decl) loop + if (Nkind (Decl) not in N_Later_Decl_Item + or else (not During_Parsing + and then + Nkind (Decl) = N_Package_Declaration)) + and then Nkind (Decl) /= N_Pragma + then + if During_Parsing then + if Ada_Version = Ada_83 then + Error_Msg_Sloc := Body_Sloc; + Error_Msg_N + ("(Ada 83) decl cannot appear after body#", Decl); + end if; + else + Error_Msg_Sloc := Body_Sloc; + Check_Formal_Restriction + ("decl cannot appear after body#", Decl); + end if; + end if; + + Next (Decl); + end loop Inner; + end if; + end loop Outer; + end Check_Later_Vs_Basic_Declarations; + ----------------------------------------- -- Check_Dynamically_Tagged_Expression -- ----------------------------------------- @@ -10478,7 +10534,7 @@ package body Sem_Util is procedure Process_End_Label (N : Node_Id; Typ : Character; - Ent : Entity_Id) + Ent : Entity_Id) is Loc : Source_Ptr; Nam : Node_Id; @@ -10629,6 +10685,18 @@ package body Sem_Util is Get_Decoded_Name_String (Chars (Endl)); Set_Sloc (Endl, Sloc (Endl) + Source_Ptr (Name_Len)); + + else + -- In SPARK mode, no missing label is allowed for packages and + -- subprogram bodies. Detect those cases by testing whether + -- Process_End_Label was called for a body (Typ = 't') or a package. + + if (SPARK_Mode or else Restriction_Check_Required (SPARK)) + and then (Typ = 't' or else Ekind (Ent) = E_Package) + then + Error_Msg_Node_1 := Endl; + Check_Formal_Restriction ("`END &` required", Endl, Force => True); + end if; end if; -- Now generate the e/t reference diff --git a/gcc/ada/sem_util.ads b/gcc/ada/sem_util.ads index 471c4a879cc..c52b68a507e 100644 --- a/gcc/ada/sem_util.ads +++ b/gcc/ada/sem_util.ads @@ -146,6 +146,16 @@ package Sem_Util is -- not necessarily mean that CE could be raised, but a response of True -- means that for sure CE cannot be raised. + procedure Check_Later_Vs_Basic_Declarations + (Decls : List_Id; + During_Parsing : Boolean); + -- If During_Parsing is True, check for misplacement of later vs basic + -- declarations in Ada 83. If During_Parsing is False, and the SPARK + -- restriction is set, do the same: although SPARK 95 removes the + -- distinction between initial and later declarative items, the distinction + -- remains in the Examiner (JB01-005). Note that the Examiner does not + -- count package declarations in later declarative items. + procedure Check_Dynamically_Tagged_Expression (Expr : Node_Id; Typ : Entity_Id;