+2011-08-04 Yannick Moy <moy@adacore.com>
+
+ * einfo.adb, einfo.ads (Formal_Proof_On): new flag set on subprogram
+ entities whose body contains an Annotate pragma which forces formal
+ proof on this body.
+ * sem_ch11.adb, sem_ch2.adb, sem_ch3.adb, sem_ch4.adb, sem_ch5.adb,
+ sem_ch6.adb, sem_ch9.adb, sem_res.adb: Adapt call to
+ Mark_Non_ALFA_Subprogram to pass in a message and node.
+ * sem_prag.adb (Analyze_Pragma): add treatment of pragma Annotate
+ (Forma_Proof, On) which sets the flag Formal_Proof_On in the
+ surrounding subprogram.
+ * sem_util.adb, sem_util.ads (Mark_Non_ALFA_Subprogram,
+ Mark_Non_ALFA_Subprogram_Unconditional): if the subprogram being marked
+ as not in ALFA is annotated with Formal_Proof being On, then an error
+ is issued based on the additional parameters for message and node.
+ * snames.ads-tmpl (Name_Formal_Proof): new name for annotation.
+ * gcc-interface/Make-lang.in: Update dependencies.
+
+2011-08-04 Hristian Kirtchev <kirtchev@adacore.com>
+
+ * exp_ch3.adb (Expand_Freeze_Class_Wide_Type): Do not generate
+ Finalize_Address when CodePeer is enabled.
+
+2011-08-04 Pascal Obry <obry@adacore.com>
+
+ * adaint.c (__gnat_tmp_name): Use _tempnam() instead of tempnam() as
+ the latter returns a pointer to a static buffer which is deallocated
+ at the end of the routine.
+
2011-08-04 Yannick Moy <moy@adacore.com>
* sem_ch3.adb (Array_Type_Declaration): move test for type in ALFA
directory specified by P_tmpdir in stdio.h if c:\temp does not
exist. The filename will be created with the prefix "gnat-". */
- pname = (char *) tempnam ("c:\\temp", "gnat-");
+ pname = (char *) _tempnam ("c:\\temp", "gnat-");
/* if pname is NULL, the file was not created properly, the disk is full
or there is no more free temporary files */
-- Body_Is_In_ALFA Flag251
-- Is_Processed_Transient Flag252
-- Is_Postcondition_Proc Flag253
- -- (unused) Flag254
+ -- Formal_Proof_On Flag254
-----------------------
-- Local subprograms --
return Node6 (Id);
end First_Rep_Item;
+ function Formal_Proof_On (Id : E) return B is
+ begin
+ pragma Assert (Is_Subprogram (Id) or else Is_Generic_Subprogram (Id));
+ return Flag254 (Id);
+ end Formal_Proof_On;
+
function Freeze_Node (Id : E) return N is
begin
return Node7 (Id);
Set_Uint10 (Id, UI_From_Int (F'Pos (V)));
end Set_Float_Rep;
+ procedure Set_Formal_Proof_On (Id : E; V : B := True) is
+ begin
+ pragma Assert (Is_Subprogram (Id) or else Is_Generic_Subprogram (Id));
+ Set_Flag254 (Id, V);
+ end Set_Formal_Proof_On;
+
procedure Set_Freeze_Node (Id : E; V : N) is
begin
Set_Node7 (Id, V);
W ("Entry_Accepted", Flag152 (Id));
W ("Can_Use_Internal_Rep", Flag229 (Id));
W ("Finalize_Storage_Only", Flag158 (Id));
+ W ("Formal_Proof_On", Flag254 (Id));
W ("From_With_Type", Flag159 (Id));
W ("Has_Aliased_Components", Flag135 (Id));
W ("Has_Alignment_Clause", Flag46 (Id));
-- Float_Rep_Kind. Together with the Digits_Value uniquely defines
-- the floating-point representation to be used.
+-- Formal_Proof_On (Flag254)
+-- Present in subprogram entities. Set for subprograms whose body
+-- contains an Annotate pragma which forces formal proof on this body.
+
-- Freeze_Node (Node7)
-- Present in all entities. If there is an associated freeze node for
-- the entity, this field references this freeze node. If no freeze
function First_Private_Entity (Id : E) return E;
function First_Rep_Item (Id : E) return N;
function Float_Rep (Id : E) return F;
+ function Formal_Proof_On (Id : E) return B;
function Freeze_Node (Id : E) return N;
function From_With_Type (Id : E) return B;
function Full_View (Id : E) return E;
procedure Set_First_Private_Entity (Id : E; V : E);
procedure Set_First_Rep_Item (Id : E; V : N);
procedure Set_Float_Rep (Id : E; V : F);
+ procedure Set_Formal_Proof_On (Id : E; V : B := True);
procedure Set_Freeze_Node (Id : E; V : N);
procedure Set_From_With_Type (Id : E; V : B := True);
procedure Set_Full_View (Id : E; V : E);
pragma Inline (First_Optional_Parameter);
pragma Inline (First_Private_Entity);
pragma Inline (First_Rep_Item);
+ pragma Inline (Formal_Proof_On);
pragma Inline (Freeze_Node);
pragma Inline (From_With_Type);
pragma Inline (Full_View);
pragma Inline (Set_First_Optional_Parameter);
pragma Inline (Set_First_Private_Entity);
pragma Inline (Set_First_Rep_Item);
+ pragma Inline (Set_Formal_Proof_On);
pragma Inline (Set_Freeze_Node);
pragma Inline (Set_From_With_Type);
pragma Inline (Set_Full_View);
if Restriction_Active (No_Finalization) then
return;
+ -- Do not create TSS routine Finalize_Address when dispatching calls are
+ -- disabled since the core of the routine is a dispatching call.
+
+ elsif Restriction_Active (No_Dispatching_Calls) then
+ return;
+
-- Do not create TSS routine Finalize_Address for concurrent class-wide
-- types. Ignore C, C++, CIL and Java types since it is assumed that the
-- non-Ada side will handle their destruction.
then
return;
- -- Do not create TSS routine Finalize_Address when dispatching calls are
- -- disabled since the core of the routine is a dispatching call.
-
- elsif Restriction_Active (No_Dispatching_Calls) then
- return;
-
-- Do not create TSS routine Finalize_Address for .NET/JVM because these
-- targets do not support address arithmetic and unchecked conversions.
elsif VM_Target /= No_VM then
return;
+
+ -- Do not create TSS routine Finalize_Address when compiling in CodePeer
+ -- mode since the routine contains an Unchecked_Conversion.
+
+ elsif CodePeer_Mode then
+ return;
end if;
-- Generate the body of Finalize_Address. This routine is accessible
ada/ada.o : ada/ada.ads ada/system.ads
ada/alfa.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
- ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/alloc.ads ada/atree.ads \
- ada/einfo.ads ada/snames.ads ada/interfac.ads ada/namet.ads \
- ada/s-conca2.ads ada/sinfo.ads ada/table.ads ada/uintp.ads \
- ada/urealp.ads ada/gnat.ads ada/g-table.ads \
- ada/g-table.adb ada/hostparm.ads ada/output.ads ada/output.adb \
- ada/put_alfa.ads ada/put_alfa.adb ada/system.ads ada/s-exctab.ads \
- ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-soflin.ads \
- ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
- ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/types.ads \
- ada/unchconv.ads ada/unchdeal.ads
+ ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/alloc.ads \
+ ada/aspects.ads ada/atree.ads ada/atree.adb ada/casing.ads \
+ ada/debug.ads ada/einfo.ads ada/gnat.ads ada/g-htable.ads \
+ ada/g-table.ads ada/g-table.adb ada/hostparm.ads ada/interfac.ads \
+ ada/namet.ads ada/namet.adb ada/nlists.ads ada/nlists.adb ada/opt.ads \
+ ada/output.ads ada/output.adb ada/put_alfa.ads ada/put_alfa.adb \
+ ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/snames.ads \
+ ada/system.ads ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads \
+ ada/s-memory.ads ada/s-os_lib.ads ada/s-parame.ads ada/s-secsta.ads \
+ ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
+ ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
+ ada/s-wchcon.ads ada/table.ads ada/table.adb ada/tree_io.ads \
+ ada/types.ads ada/uintp.ads ada/uintp.adb ada/unchconv.ads \
+ ada/unchdeal.ads ada/urealp.ads ada/widechar.ads
ada/ali-util.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
ada/a-uncdea.ads ada/ali.ads ada/ali.adb ada/ali-util.ads \
ada/sem_ch8.ads ada/sem_ch9.ads ada/sem_dist.ads ada/sem_eval.ads \
ada/sem_prag.ads ada/sem_res.ads ada/sem_type.ads ada/sem_util.ads \
ada/sinfo.ads ada/sinfo.adb ada/sinput.ads ada/snames.ads ada/stand.ads \
- ada/stringt.ads ada/stringt.adb ada/stylesw.ads ada/system.ads \
- ada/s-exctab.ads ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads \
- ada/s-os_lib.ads ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads \
- ada/s-soflin.ads ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads \
- ada/s-stoele.adb ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads \
- ada/s-wchcon.ads ada/table.ads ada/table.adb ada/targparm.ads \
- ada/tbuild.ads ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads \
- ada/types.ads ada/uintp.ads ada/uintp.adb ada/uname.ads \
- ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads ada/validsw.ads \
- ada/widechar.ads
+ ada/stringt.ads ada/stylesw.ads ada/system.ads ada/s-exctab.ads \
+ ada/s-htable.ads ada/s-imenne.ads ada/s-memory.ads ada/s-os_lib.ads \
+ ada/s-parame.ads ada/s-rident.ads ada/s-secsta.ads ada/s-soflin.ads \
+ ada/s-stache.ads ada/s-stalib.ads ada/s-stoele.ads ada/s-stoele.adb \
+ ada/s-string.ads ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads \
+ ada/table.ads ada/table.adb ada/targparm.ads ada/tbuild.ads \
+ ada/tbuild.adb ada/tree_io.ads ada/ttypes.ads ada/types.ads \
+ ada/uintp.ads ada/uintp.adb ada/uname.ads ada/unchconv.ads \
+ ada/unchdeal.ads ada/urealp.ads ada/validsw.ads ada/widechar.ads
ada/exp_ch8.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
ada/a-uncdea.ads ada/alloc.ads ada/aspects.ads ada/atree.ads \
ada/g-u3spch.ads ada/g-u3spch.adb ada/system.ads ada/s-wchcnv.ads \
ada/s-wchcon.ads
-ada/get_alfa.o : ada/ada.ads ada/a-ioexce.ads ada/a-unccon.ads \
- ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/get_alfa.ads \
- ada/get_alfa.adb ada/gnat.ads ada/g-table.ads ada/g-table.adb \
- ada/hostparm.ads ada/output.ads ada/put_alfa.ads ada/system.ads \
- ada/s-exctab.ads ada/s-memory.ads ada/s-os_lib.ads ada/s-stalib.ads \
- ada/s-string.ads ada/s-unstyp.ads ada/types.ads ada/unchconv.ads \
- ada/unchdeal.ads
+ada/get_alfa.o : ada/ada.ads ada/a-except.ads ada/a-ioexce.ads \
+ ada/a-unccon.ads ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb \
+ ada/alloc.ads ada/atree.ads ada/debug.ads ada/einfo.ads \
+ ada/get_alfa.ads ada/get_alfa.adb ada/gnat.ads ada/g-table.ads \
+ ada/g-table.adb ada/hostparm.ads ada/namet.ads ada/opt.ads \
+ ada/output.ads ada/put_alfa.ads ada/sinfo.ads ada/snames.ads \
+ ada/system.ads ada/s-exctab.ads ada/s-memory.ads ada/s-os_lib.ads \
+ ada/s-parame.ads ada/s-stalib.ads ada/s-string.ads ada/s-traent.ads \
+ ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads ada/table.adb \
+ ada/tree_io.ads ada/types.ads ada/uintp.ads ada/unchconv.ads \
+ ada/unchdeal.ads ada/urealp.ads
ada/get_scos.o : ada/ada.ads ada/a-ioexce.ads ada/a-unccon.ads \
ada/get_scos.ads ada/get_scos.adb ada/gnat.ads ada/g-table.ads \
ada/uintp.adb ada/uname.ads ada/unchconv.ads ada/unchdeal.ads \
ada/urealp.ads ada/widechar.ads
-ada/put_alfa.o : ada/ada.ads ada/a-unccon.ads ada/a-uncdea.ads \
- ada/alfa.ads ada/alfa.adb ada/gnat.ads ada/g-table.ads ada/g-table.adb \
- ada/hostparm.ads ada/output.ads ada/put_alfa.ads ada/put_alfa.adb \
- ada/system.ads ada/s-exctab.ads ada/s-memory.ads ada/s-os_lib.ads \
- ada/s-stalib.ads ada/s-string.ads ada/s-unstyp.ads ada/types.ads \
- ada/unchconv.ads ada/unchdeal.ads
+ada/put_alfa.o : ada/ada.ads ada/a-except.ads ada/a-unccon.ads \
+ ada/a-uncdea.ads ada/alfa.ads ada/alfa.adb ada/alloc.ads ada/atree.ads \
+ ada/debug.ads ada/einfo.ads ada/gnat.ads ada/g-table.ads \
+ ada/g-table.adb ada/hostparm.ads ada/namet.ads ada/opt.ads \
+ ada/output.ads ada/put_alfa.ads ada/put_alfa.adb ada/sinfo.ads \
+ ada/snames.ads ada/system.ads ada/s-exctab.ads ada/s-memory.ads \
+ ada/s-os_lib.ads ada/s-parame.ads ada/s-stalib.ads ada/s-string.ads \
+ ada/s-traent.ads ada/s-unstyp.ads ada/s-wchcon.ads ada/table.ads \
+ ada/table.adb ada/tree_io.ads ada/types.ads ada/uintp.ads \
+ ada/unchconv.ads ada/unchdeal.ads ada/urealp.ads
ada/put_scos.o : ada/ada.ads ada/a-unccon.ads ada/gnat.ads ada/g-table.ads \
ada/g-table.adb ada/put_scos.ads ada/put_scos.adb ada/scos.ads \
P : Node_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("raise statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("raise statement is not allowed", N);
Check_Unreachable_Code (N);
and then Is_Object (Entity (N))
and then not Is_In_ALFA (Entity (N))
then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("object is not in 'A'L'F'A", N);
end if;
end if;
end Analyze_Identifier;
-- The object is in ALFA if-and-only-if its type is in ALFA and it is
-- not aliased.
- if Is_In_ALFA (T) and then not Aliased_Present (N) then
- Set_Is_In_ALFA (Id);
+ if not Is_In_ALFA (T) then
+ Mark_Non_ALFA_Subprogram ("object type is not in 'A'L'F'A", N);
+ elsif Aliased_Present (N) then
+ Mark_Non_ALFA_Subprogram ("ALIASED is not in 'A'L'F'A", N);
else
- Mark_Non_ALFA_Subprogram;
+ Set_Is_In_ALFA (Id);
end if;
-- These checks should be performed before the initialization expression
procedure Analyze_Aggregate (N : Node_Id) is
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("aggregate is not in 'A'L'F'A", N);
if No (Etype (N)) then
Set_Etype (N, Any_Composite);
C : Node_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("allocator is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("allocator is not allowed", N);
-- Deal with allocator restrictions
-- If this is an indirect call, or the subprogram called is not in
-- ALFA, then the call is not in ALFA.
- if not Is_Subprogram (Nam_Ent)
- or else not Is_In_ALFA (Nam_Ent)
- then
- Mark_Non_ALFA_Subprogram;
+ if not Is_Subprogram (Nam_Ent) then
+ Mark_Non_ALFA_Subprogram ("indirect call is not in 'A'L'F'A", N);
+ elsif not Is_In_ALFA (Nam_Ent) then
+ Mark_Non_ALFA_Subprogram ("call to subprogram not in 'A'L'F'A", N);
end if;
Analyze_One_Call (N, Nam_Ent, True, Success);
L : Node_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("concatenation is not in 'A'L'F'A", N);
Candidate_Type := Empty;
-- resolution.
if Present (Else_Expr) and then not In_Pre_Post_Expression then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("this form of conditional expression is not in 'A'L'F'A", N);
end if;
if Comes_From_Source (N) then
-- Start of processing for Analyze_Explicit_Dereference
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("explicit dereference is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("explicit dereference is not allowed", N);
Analyze (P);
procedure Analyze_Null (N : Node_Id) is
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("null is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("null is not allowed", N);
Set_Etype (N, Any_Access);
T : Entity_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("qualified expression is not in 'A'L'F'A", N);
Analyze_Expression (Expr);
Iterator : Node_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("quantified expression is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("quantified expression is not allowed", N);
Set_Etype (Ent, Standard_Void_Type);
Acc_Type : Entity_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("reference is not in 'A'L'F'A", N);
Analyze (P);
-- Start of processing for Analyze_Slice
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("slice is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("slice is not allowed", N);
Analyze (P);
-- type conversions are not allowed.
if not (Is_Scalar_Type (Etype (Expr)) and then Is_Scalar_Type (T)) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("only type conversion between scalar types is in 'A'L'F'A", N);
end if;
-- Only remaining step is validity checks on the argument. These
procedure Analyze_Unchecked_Type_Conversion (N : Node_Id) is
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("unchecked type conversion is not in 'A'L'F'A", N);
Find_Type (Subtype_Mark (N));
Analyze_Expression (Expression (N));
Set_Etype (N, Entity (Subtype_Mark (N)));
if Others_Present
and then List_Length (Alternatives (N)) = 1
then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("OTHERS as unique case alternative is not in 'A'L'F'A", N);
Check_SPARK_Restriction
("OTHERS as unique case alternative is not allowed", N);
end if;
else
if Has_Loop_In_Inner_Open_Scopes (U_Name) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("exit label must name the closest enclosing loop"
+ & " in 'A'L'F'A", N);
Check_SPARK_Restriction
("exit label must name the closest enclosing loop", N);
end if;
if Present (Cond) then
if Nkind (Parent (N)) /= N_Loop_Statement then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("exit with when clause must be directly in loop"
+ & " in 'A'L'F'A", N);
Check_SPARK_Restriction
("exit with when clause must be directly in loop", N);
end if;
else
if Nkind (Parent (N)) /= N_If_Statement then
- Mark_Non_ALFA_Subprogram;
if Nkind (Parent (N)) = N_Elsif_Part then
+ Mark_Non_ALFA_Subprogram
+ ("exit must be in IF without ELSIF in 'A'L'F'A", N);
Check_SPARK_Restriction
("exit must be in IF without ELSIF", N);
else
+ Mark_Non_ALFA_Subprogram
+ ("exit must be directly in IF in 'A'L'F'A", N);
Check_SPARK_Restriction ("exit must be directly in IF", N);
end if;
elsif Nkind (Parent (Parent (N))) /= N_Loop_Statement then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("exit must be in IF directly in loop in 'A'L'F'A", N);
Check_SPARK_Restriction
("exit must be in IF directly in loop", N);
-- leads to an error mentioning the ELSE.
elsif Present (Else_Statements (Parent (N))) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("exit must be in IF without ELSE in 'A'L'F'A", N);
Check_SPARK_Restriction ("exit must be in IF without ELSE", N);
-- An exit in an ELSIF does not reach here, as it would have been
-- detected in the case (Nkind (Parent (N)) /= N_If_Statement).
elsif Present (Elsif_Parts (Parent (N))) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("exit must be in IF without ELSIF in 'A'L'F'A", N);
Check_SPARK_Restriction ("exit must be in IF without ELSIF", N);
end if;
end if;
Label_Ent : Entity_Id;
begin
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("goto statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("goto statement is not allowed", N);
-- Actual semantic checks
(Nkind (Parent (Parent (N))) /= N_Subprogram_Body
or else Present (Next (N)))
then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("RETURN should be the last statement in 'A'L'F'A", N);
Check_SPARK_Restriction
("RETURN should be the last statement in function", N);
end if;
else
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("extended RETURN is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("extended RETURN is not allowed", N);
-- Analyze parts specific to extended_return_statement:
if Is_In_ALFA (Formal_Type) then
Set_Is_In_ALFA (Formal);
else
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("formal is not in 'A'L'F'A", Formal);
end if;
Default := Expression (Param_Spec);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("abort statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("abort statement is not allowed", N);
T_Name := First (Names (N));
procedure Analyze_Accept_Alternative (N : Node_Id) is
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("accept is not in 'A'L'F'A", N);
if Present (Pragmas_Before (N)) then
Analyze_List (Pragmas_Before (N));
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("accept statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("accept statement is not allowed", N);
-- Entry name is initialized to Any_Id. It should get reset to the
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("select statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("select statement is not allowed", N);
Check_Restriction (Max_Asynchronous_Select_Nesting, N);
Check_Restriction (No_Select_Statements, N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("select statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("select statement is not allowed", N);
Check_Restriction (No_Select_Statements, N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("delay is not in 'A'L'F'A", N);
Check_Restriction (No_Delay, N);
if Present (Pragmas_Before (N)) then
E : constant Node_Id := Expression (N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("delay statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("delay statement is not allowed", N);
Check_Restriction (No_Relative_Delay, N);
Check_Restriction (No_Delay, N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("delay statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("delay statement is not allowed", N);
Check_Restriction (No_Delay, N);
Check_Potentially_Blocking_Operation (N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("entry is not in 'A'L'F'A", N);
-- Entry_Name is initialized to Any_Id. It should get reset to the
-- matching entry entity. An error is signalled if it is not reset
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("entry is not in 'A'L'F'A", N);
if Present (Index) then
Analyze (Index);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("entry call is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("entry call is not allowed", N);
if Present (Pragmas_Before (N)) then
begin
Generate_Definition (Def_Id);
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("entry is not in 'A'L'F'A", N);
-- Case of no discrete subtype definition
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("entry is not in 'A'L'F'A", N);
Analyze (Def);
-- There is no elaboration of the entry index specification. Therefore,
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("protected body is not in 'A'L'F'A", N);
Set_Ekind (Body_Id, E_Protected_Body);
Spec_Id := Find_Concurrent_Spec (Body_Id);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("protected definition is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("protected definition is not allowed", N);
Analyze_Declarations (Visible_Declarations (N));
end if;
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("protected type is not in 'A'L'F'A", N);
Check_Restriction (No_Protected_Types, N);
T := Find_Type_Name (N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("requeue statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("requeue statement is not allowed", N);
Check_Restriction (No_Requeue_Statements, N);
Check_Unreachable_Code (N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("select statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("select statement is not allowed", N);
Check_Restriction (No_Select_Statements, N);
begin
Generate_Definition (Id);
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("protected object is not in 'A'L'F'A", N);
-- The node is rewritten as a protected type declaration, in exact
-- analogy with what is done with single tasks.
begin
Generate_Definition (Id);
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("task is not in 'A'L'F'A", N);
-- The node is rewritten as a task type declaration, followed by an
-- object declaration of that anonymous task type.
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("task body is not in 'A'L'F'A", N);
Set_Ekind (Body_Id, E_Task_Body);
Set_Scope (Body_Id, Current_Scope);
Spec_Id := Find_Concurrent_Spec (Body_Id);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("task definition is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("task definition is not allowed", N);
if Present (Visible_Declarations (N)) then
begin
Check_Restriction (No_Tasking, N);
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("task type is not in 'A'L'F'A", N);
T := Find_Type_Name (N);
Generate_Definition (T);
procedure Analyze_Terminate_Alternative (N : Node_Id) is
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("terminate is not in 'A'L'F'A", N);
if Present (Pragmas_Before (N)) then
Analyze_List (Pragmas_Before (N));
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("select statement is not in 'A'L'F'A", N);
Check_SPARK_Restriction ("select statement is not allowed", N);
Check_Restriction (No_Select_Statements, N);
begin
Tasking_Used := True;
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram ("triggering statement is not in 'A'L'F'A", N);
if Present (Pragmas_Before (N)) then
Analyze_List (Pragmas_Before (N));
Exp : Node_Id;
begin
+ if Chars (Get_Pragma_Arg (Arg1)) = Name_Formal_Proof then
+ if No (Arg2) then
+ Error_Pragma_Arg
+ ("missing second argument for pragma%", Arg1);
+ end if;
+
+ Check_Arg_Is_Identifier (Arg2);
+ Check_Arg_Count (2);
+
+ if Chars (Get_Pragma_Arg (Arg2)) /= Name_On
+ and then Chars (Get_Pragma_Arg (Arg2)) /= Name_Off
+ then
+ Error_Pragma_Arg
+ ("wrong second argument for pragma%", Arg2);
+ end if;
+
+ if Chars (Get_Pragma_Arg (Arg2)) = Name_On then
+ declare
+ Cur_Subp : constant Entity_Id := Current_Subprogram;
+
+ begin
+ if Present (Cur_Subp)
+ and then (Is_Subprogram (Cur_Subp)
+ or else Is_Generic_Subprogram (Cur_Subp))
+ then
+ -- Notify user if some ALFA violation occurred
+ -- before this point in Cur_Subp. These violations
+ -- are not precisly located, but this is better
+ -- than ignoring them.
+
+ if not Is_In_ALFA (Cur_Subp)
+ or else not Body_Is_In_ALFA (Cur_Subp)
+ then
+ Error_Pragma
+ ("pragma% is placed after violation"
+ & " of 'A'L'F'A");
+ end if;
+
+ Set_Formal_Proof_On (Cur_Subp);
+
+ else
+ Error_Pragma ("wrong placement for pragma%");
+ end if;
+ end;
+ end if;
+ end if;
+
-- Second unanalyzed parameter is optional
if No (Arg2) then
-- types or array types except String.
if Is_Boolean_Type (T) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("ordering operator on boolean type is not in 'A'L'F'A", N);
Check_SPARK_Restriction
("comparison is not defined on Boolean type", N);
elsif Is_Array_Type (T) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("ordering operator on array type is not in 'A'L'F'A", N);
if Base_Type (T) /= Standard_String then
Check_SPARK_Restriction
end if;
if Root_Type (Typ) /= Standard_Boolean then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("non-boolean conditional expression is not in 'A'L'F'A", N);
end if;
Set_Etype (N, Typ);
-- operands have equal static bounds.
if Is_Array_Type (T) then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("equality operator on array is not in 'A'L'F'A", N);
-- Protect call to Matching_Static_Array_Bounds to avoid costly
-- operation if not needed.
if Is_Array_Type (B_Typ)
and then Nkind (N) in N_Binary_Op
then
- Mark_Non_ALFA_Subprogram;
+ Mark_Non_ALFA_Subprogram
+ ("binary operator on array is not in 'A'L'F'A", N);
declare
Left_Typ : constant Node_Id := Etype (Left_Opnd (N));
-- T is a derived tagged type. Check whether the type extension is null.
-- If the parent type is fully initialized, T can be treated as such.
- procedure Mark_Non_ALFA_Subprogram_Unconditional;
+ procedure Mark_Non_ALFA_Subprogram_Unconditional
+ (Msg : String;
+ N : Node_Id);
-- Perform the action for Mark_Non_ALFA_Subprogram_Body, which allows the
- -- latter to be small and inlined.
+ -- latter to be small and inlined. If the subprogram being marked as not in
+ -- ALFA is annotated with Formal_Proof being On, then an error is issued
+ -- with message Msg on node N.
------------------------------
-- Abstract_Interface_List --
-- Mark_Non_ALFA_Subprogram --
------------------------------
- procedure Mark_Non_ALFA_Subprogram is
+ procedure Mark_Non_ALFA_Subprogram (Msg : String; N : Node_Id) is
begin
-- Isolate marking of the current subprogram body so that the body of
-- Mark_Non_ALFA_Subprogram is small and inlined.
if ALFA_Mode then
- Mark_Non_ALFA_Subprogram_Unconditional;
+ Mark_Non_ALFA_Subprogram_Unconditional (Msg, N);
end if;
end Mark_Non_ALFA_Subprogram;
-- Mark_Non_ALFA_Subprogram_Unconditional --
--------------------------------------------
- procedure Mark_Non_ALFA_Subprogram_Unconditional is
+ procedure Mark_Non_ALFA_Subprogram_Unconditional
+ (Msg : String;
+ N : Node_Id)
+ is
Cur_Subp : constant Entity_Id := Current_Subprogram;
begin
and then (Is_Subprogram (Cur_Subp)
or else Is_Generic_Subprogram (Cur_Subp))
then
+ -- If the subprogram has been annotated with Formal_Proof being On,
+ -- then an error must be issued to notify the user that this
+ -- subprogram unexpectedly falls outside the ALFA subset.
+
+ if Formal_Proof_On (Cur_Subp) then
+ Error_Msg_F (Msg, N);
+ end if;
+
-- If the non-ALFA construct is in a precondition or postcondition,
- -- then mark the subprogram as not in ALFA. Otherwise, mark the
- -- subprogram body as not in ALFA.
+ -- then mark the subprogram as not in ALFA, because neither the
+ -- subprogram nor its callers can be proved formally.
- -- This comment just says what is done, but not why ??? and it
- -- just repeats what is in the spec ???
+ -- If the non-ALFA construct is in a regular piece of code inside the
+ -- body of the subprogram, then mark the subprogram body as not in
+ -- ALFA, because the subprogram cannot be proved formally, but its
+ -- callers could.
if In_Pre_Post_Expression then
Set_Is_In_ALFA (Cur_Subp, False);
-- Current_Scope is returned. The returned value is Empty if this is called
-- from a library package which is not within any subprogram.
- procedure Mark_Non_ALFA_Subprogram;
+ procedure Mark_Non_ALFA_Subprogram (Msg : String; N : Node_Id);
-- If Current_Subprogram is not Empty, mark either its specification or its
- -- body as not being in ALFA. This procedure may be called during the
- -- analysis of a precondition or postcondition, as indicated by the flag
- -- In_Pre_Post_Expression, or during the analysis of a subprogram's body.
- -- In the first case, the specification of Current_Subprogram must be
- -- marked as not being in ALFA, as the contract is considered to be part of
- -- the specification, so that calls to this subprogram are not in ALFA. In
- -- the second case, mark the body as not being in ALFA, which does not
- -- prevent the subprogram's specification, and calls to the subprogram,
- -- from being in ALFA.
+ -- body as not being in ALFA.
+
+ -- This procedure may be called during the analysis of a precondition or
+ -- postcondition, as indicated by the flag In_Pre_Post_Expression, or
+ -- during the analysis of a subprogram's body. In the first case, the
+ -- specification of Current_Subprogram must be marked as not being in ALFA,
+ -- as the contract is considered to be part of the specification, so that
+ -- calls to this subprogram are not in ALFA. In the second case, mark the
+ -- body as not being in ALFA, which does not prevent the subprogram's
+ -- specification, and calls to the subprogram, from being in ALFA.
+
+ -- If the subprogram being marked as not in ALFA is annotated with
+ -- Formal_Proof being On, then an error is issued with message Msg on node
+ -- N.
function Defining_Entity (N : Node_Id) return Entity_Id;
-- Given a declaration N, returns the associated defining entity. If the
Name_External_Name : constant Name_Id := N + $;
Name_First_Optional_Parameter : constant Name_Id := N + $;
Name_Form : constant Name_Id := N + $;
+ Name_Formal_Proof : constant Name_Id := N + $;
Name_G_Float : constant Name_Id := N + $;
Name_Gcc : constant Name_Id := N + $;
Name_Gnat : constant Name_Id := N + $;
projects / gcc.git / commitdiff