-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2018, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2021, 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 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. --
--- --
--- As a special exception under Section 7 of GPL version 3, you are granted --
--- additional permissions described in the GCC Runtime Library Exception, --
--- version 3.1, as published by the Free Software Foundation. --
--- --
--- You should have received a copy of the GNU General Public License and --
--- a copy of the GCC Runtime Library Exception along with this program; --
--- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
--- <http://www.gnu.org/licenses/>. --
+-- 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 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. --
-- from a compilation point of view (e.g. spelling of identifiers and
-- white space layout do not count in this computation).
- -- The way the checksum is computed has evolved across the various versions
- -- of GNAT. When gprbuild is called with -m, the checksums must be computed
- -- the same way in gprbuild as it was in the GNAT version of the compiler.
- -- The different ways are
-
- -- Version 6.4 and later:
-
- -- The Accumulate_Token_Checksum procedure is called after each numeric
- -- literal and each identifier/keyword. For keywords, Tok_Identifier is
- -- used in the call to Accumulate_Token_Checksum.
-
- -- Versions 5.04 to 6.3:
-
- -- For keywords, the token value were used in the call to procedure
- -- Accumulate_Token_Checksum. Type Token_Type did not include Tok_Some.
-
- -- Versions 5.03:
-
- -- For keywords, the token value were used in the call to
- -- Accumulate_Token_Checksum. Type Token_Type did not include
- -- Tok_Interface, Tok_Overriding, Tok_Synchronized and Tok_Some.
-
- -- Versions 5.02 and before:
-
- -- No calls to procedure Accumulate_Token_Checksum (the checksum
- -- mechanism was introduced in version 5.03).
-
- -- To signal to the scanner whether Accumulate_Token_Checksum needs to be
- -- called and what versions to call, the following Boolean flags are used:
-
- Checksum_Accumulate_Token_Checksum : Boolean := True;
- -- GPRBUILD
- -- Set to False by gprbuild when the version of GNAT is 5.02 or before. If
- -- this switch is False, then we do not call Accumulate_Token_Checksum, so
- -- the setting of the following two flags is irrelevant.
-
- Checksum_GNAT_6_3 : Boolean := False;
- -- GPRBUILD
- -- Set to True by gprbuild when the version of GNAT is 6.3 or before.
-
- Checksum_GNAT_5_03 : Boolean := False;
- -- GPRBUILD
- -- Set to True by gprbuild when the version of GNAT is 5.03 or before.
-
Checksum_Accumulate_Limited_Checksum : Boolean := False;
-- Used to control the computation of the limited view of a package.
-- (Not currently used, possible optimization for ALI files of units
-- the default values.
Latest_Ada_Only : Boolean := False;
- -- If True, the only value valid for Ada_Version is Ada_Version_Type'Last,
- -- trying to specify other values will be ignored (in case of pragma
+ -- If True, the only value valid for Ada_Version is Ada_2012 or later.
+ -- Trying to specify other values will be ignored (in case of pragma
-- Ada_xxx) or generate an error (in case of -gnat83/95/xx switches).
- type Ada_Version_Type is (Ada_83, Ada_95, Ada_2005, Ada_2012, Ada_2020);
+ type Ada_Version_Type is
+ (Ada_83, Ada_95, Ada_2005, Ada_2012, Ada_2022, Ada_With_Extensions);
pragma Ordered (Ada_Version_Type);
+ pragma Convention (C, Ada_Version_Type);
-- Versions of Ada for Ada_Version below. Note that these are ordered,
-- so that tests like Ada_Version >= Ada_95 are legitimate and useful.
-- Think twice before using "="; Ada_Version >= Ada_2012 is more likely
-- what you want, because it will apply to future versions of the language.
+ -- Note that Ada_With_Extensions should always be last since it should
+ -- always be a superset of the latest Ada version.
+
+ -- WARNING: There is a matching C declaration of this type in fe.h
Ada_Version_Default : constant Ada_Version_Type := Ada_2012;
pragma Warnings (Off, Ada_Version_Default);
-- compiler switches, or implicitly (to Ada_Version_Runtime) when a
-- predefined or internal file is compiled.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Ada_Version_Pragma : Node_Id := Empty;
-- Reflects the Ada_xxx pragma that resulted in setting Ada_Version. Used
-- to specialize error messages complaining about the Ada version in use.
-- remains set to Ada_Version_Default). This is used in the rare cases
-- (notably pragma Obsolescent) where we want the explicit version set.
- Ada_Version_Runtime : Ada_Version_Type := Ada_2012;
+ Ada_Version_Runtime : Ada_Version_Type := Ada_With_Extensions;
-- GNAT
-- Ada version used to compile the runtime. Used to set Ada_Version (but
-- not Ada_Version_Explicit) when compiling predefined or internal units.
-- GNAT, GNATBIND
-- Set True if package System has the line "type Address is private;"
+ Aggregate_Individually_Assign : Boolean := False;
+ -- GNAT
+ -- Set True if record aggregates are to be always converted into assignment
+ -- statements. Set through the corresponding pragma.
+
All_Errors_Mode : Boolean := False;
-- GNAT
-- Flag set to force display of multiple errors on a single line and
Allow_Integer_Address : Boolean := False;
-- GNAT
-- Allow use of integer expression in a context requiring System.Address.
- -- Set by the use of configuration pragma Allow_Integer_Address Also set
+ -- Set by the use of configuration pragma Allow_Integer_Address. Also set
-- in relaxed semantics mode for use by CodePeer or when -gnatd.M is used.
All_Sources : Boolean := False;
-- Set to non-null when Bind_Alternate_Main_Name is True. This value
-- is modified as needed by Gnatbind.Scan_Bind_Arg.
- ASIS_GNSA_Mode : Boolean := False;
- -- GNAT
- -- Enable GNSA back-end processing assuming ASIS_Mode is already set to
- -- True. ASIS_GNSA mode suppresses the call to gigi.
-
- ASIS_Mode : Boolean := False;
- -- GNAT
- -- Enable semantic checks and tree transformations that are important
- -- for ASIS but that are usually skipped if Operating_Mode is set to
- -- Check_Semantics. This flag does not have the corresponding option to set
- -- it ON. It is set ON when Tree_Output is set ON, it can also be set ON
- -- from the code of GNSA-based tool (a client may need to set ON the
- -- Back_Annotate_Rep_Info flag in this case. At the moment this does not
- -- make very much sense, because GNSA cannot do back annotation).
-
Assertions_Enabled : Boolean := False;
-- GNAT
-- Indicates default policy (True = Check, False = Ignore) to be applied
-- are valid and in range of their representations. This feature is now
-- fully enabled in the compiler.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Back_Annotate_Rep_Info : Boolean := False;
-- GNAT
-- If set True, enables back annotation of representation information
-- by gigi, even in -gnatc mode. This is set True by the use of -gnatR
- -- (list representation information) or -gnatt (generate tree). It is
- -- also set true if certain Unchecked_Conversion instantiations require
- -- checking based on annotated values.
+ -- (list representation information). It is also set true if certain
+ -- Unchecked_Conversion instantiations require checking based on annotated
+ -- values.
Back_End_Handles_Limited_Types : Boolean;
-- This flag is set true if the back end can properly handle limited or
-- switches -gnatN or -gnatd.z are used. See circuitry in gnat1drv for the
-- exact conditions for setting this switch.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Bind_Alternate_Main_Name : Boolean := False;
-- GNATBIND
-- True if main should be called Alternate_Main_Name.all.
-- GNAT
-- Names of configuration pragmas files (given by switches -gnatec)
+ Config_Files_Store_Basename : Boolean := False;
+ -- GNAT
+ -- Set True for -gnateb. Tells GNAT that config files should be referred to
+ -- by their basename and their checksums computed in ALI files.
+
Configurable_Run_Time_Mode : Boolean := False;
-- GNAT, GNATBIND
-- Set True if the compiler is operating in configurable run-time mode.
- -- This happens if the flag Targparm.Configurable_Run_TimeMode_On_Target
- -- is set True, or if pragma No_Run_Time is used. See the spec of Rtsfind
- -- for details on the handling of the latter pragma.
+ -- This happens if the flag Targparm.Configurable_Run_Time_On_Target is
+ -- True, or if pragma No_Run_Time is used. See the spec of Rtsfind for
+ -- details on the handling of the latter pragma.
Constant_Condition_Warnings : Boolean := False;
-- GNAT
-- of the original source code. Causes debugging information to be
-- written with respect to the generated code file that is written.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Default_Pool : Node_Id := Empty;
-- GNAT
-- Used to record the storage pool name (or null literal) that is the
-- PROJECT MANAGER
-- Set to False with switch -f of gnatclean and gprclean
+ Disable_FE_Inline : Boolean := False;
+ -- GNAT
+ -- Request to disable front end inlining from pragma Inline in the
+ -- presence of the -fno-inline back end flag on the command line,
+ -- regardless of any other switches that are set.
+ -- It remains the back end's reponsibility to honor -fno-inline at the
+ -- back end level.
+
Display_Compilation_Progress : Boolean := False;
-- GNATMAKE, GPRBUILD
-- Set True (-d switch) to display information on progress while compiling
- -- files. Internal flag to be used in conjunction with an IDE (e.g GPS).
+ -- files. Internal flag to be used in conjunction with an IDE
+ -- (e.g GNAT Studio).
type Distribution_Stub_Mode_Type is
-- GNAT
(No_Stubs,
- -- Normal mode, no generation/compilation of distribution stubs
+ -- Normal mode, no generation of distribution stubs
Generate_Receiver_Stub_Body,
-- The unit being compiled is the RCI body, and the compiler will
Distribution_Stub_Mode : Distribution_Stub_Mode_Type := No_Stubs;
-- GNAT
- -- This enumeration variable indicates the five states of distribution
- -- annex stub generation/compilation.
+ -- This enumeration variable indicates the three states of distribution
+ -- annex stub generation.
Do_Not_Execute : Boolean := False;
-- GNATMAKE
-- dataflow analysis, which is not available. This behavior parallels that
-- of the old ABE mechanism.
+ Enable_128bit_Types : Boolean := False;
+ -- GNAT
+ -- Set to True to enable the support for 128-bit types in the compiler.
+ -- The prerequisite is a 64-bit target that supports 128-bit computation.
+
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Error_Msg_Line_Length : Nat := 0;
-- GNAT
-- Records the error message line length limit. If this is set to zero,
-- associated with exception messages (in particular range and index
-- checks).
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Exception_Locations_Suppressed : Boolean := False;
-- GNAT
-- Set to True if a Suppress_Exception_Locations configuration pragma is
-- currently active.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
type Exception_Mechanism_Type is
-- Determines the kind of mechanism used to handle exceptions
--
-- Similar to Back_End_ZCX with respect to the front-end processing
-- of regular and AT-END handlers. A setjmp/longjmp scheme is used to
-- propagate and setup handler contexts on regular execution paths.
-
pragma Convention (C, Exception_Mechanism_Type);
+ -- WARNING: There is a matching C declaration of this type in fe.h
+
Exception_Mechanism : Exception_Mechanism_Type := Front_End_SJLJ;
-- GNAT
-- Set to the appropriate value depending on the flags in system.ads
-- (Frontend_Exceptions + ZCX_By_Default). The C convention is there to
-- allow access by gigi.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
function Back_End_Exceptions return Boolean;
function Front_End_Exceptions return Boolean;
function ZCX_Exceptions return Boolean;
-- GNAT
-- Various properties of the active Exception_Mechanism
+ -- WARNING: There is a matching C declaration of these subprograms in fe.h
+
Exception_Tracebacks : Boolean := False;
-- GNATBIND
-- Set to True to store tracebacks in exception occurrences (-Ea or -E)
-- Set to True to convert nonbinary modular additions into code
-- that relies on the front-end expansion of operator Mod.
- Extensions_Allowed : Boolean := False;
- -- GNAT
- -- Set to True by switch -gnatX if GNAT specific language extensions
- -- are allowed. Currently there are no such defined extensions.
+ function Extensions_Allowed return Boolean is
+ (Ada_Version = Ada_With_Extensions);
+ -- True if GNAT specific language extensions are allowed. See GNAT RM for
+ -- details.
type External_Casing_Type is (
As_Is, -- External names cased as they appear in the Ada source
-- Indicates the current setting of Fast_Math mode, as set by the use
-- of a Fast_Math pragma (set True by Fast_Math (On)).
- Force_ALI_Tree_File : Boolean := False;
+ Force_ALI_File : Boolean := False;
-- GNAT
- -- Force generation of ALI file even if errors are encountered. Also forces
- -- generation of tree file if -gnatt is also set. Set on by use of -gnatQ.
+ -- Force generation of ALI file even if errors are encountered.
+ -- Set on by use of -gnatQ.
Disable_ALI_File : Boolean := False;
-- GNAT
-- the name is of the form .xxx, then to name.xxx where name is the source
-- file name with extension stripped.
- Generate_C_Code : Boolean := False;
+ Generate_Asm : Boolean := False;
-- GNAT
+ -- True if generating assembly instead of an object file, via the -S switch
+
+ Generate_C_Code : Boolean := False;
+ -- GNAT, GNATBIND
-- If True, the Cprint circuitry to generate C code output is activated.
- -- Set True by use of -gnateg or -gnatd.V.
+ -- Set True by use of -gnateg or -gnatd.V for GNAT, and -G for GNATBIND.
Generate_CodePeer_Messages : Boolean := False;
-- GNAT
-- True when switch -fdump-scos is used. When True, a table of instances is
-- included in SCOs.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Generating_Code : Boolean := False;
-- GNAT
-- True if the frontend finished its work and has called the backend to
Ignore_Rep_Clauses : Boolean := False;
-- GNAT
-- Set True to ignore all representation clauses. Useful when compiling
- -- code from foreign compilers for checking or ASIS purposes. Can be
+ -- code from foreign compilers for checking purposes. Can be
-- set True by use of -gnatI.
Ignore_SPARK_Mode_Pragmas_In_Instance : Boolean := False;
-- directory if these files already exist or in the source directory
-- if not.
+ JSON_Output : Boolean := False;
+ -- GNAT
+ -- Output error and warning messages in JSON format. Set to true when the
+ -- backend option "-fdiagnostics-format=json" is found on the command line.
+
Keep_Going : Boolean := False;
-- GNATMAKE, GPRBUILD
-- When True signals to ignore compilation errors and keep processing
Leap_Seconds_Support : Boolean := False;
-- GNATBIND
-- Set to True to enable leap seconds support in Ada.Calendar and its
- -- children.
+ -- children. Set by -y.
Legacy_Elaboration_Checks : Boolean := False;
-- GNAT
-- Set to True when the pre-18.x access-before-elaboration model is to be
-- used. Modified by use of -gnatH.
+ Legacy_Elaboration_Order : Boolean := False;
+ -- GNATBIND
+ -- Set to True when the pre-20.x elaboration-order model is to be used.
+ -- Modified by use of -H.
+
Link_Only : Boolean := False;
-- GNATMAKE, GPRBUILD
-- Set to True to skip compile and bind steps (except when Bind_Only is
-- the list of object dependencies (-M switch). Output depends if -a switch
-- is used or not. This list can be used directly in a Makefile.
- List_Representation_Info : Int range 0 .. 3 := 0;
+ List_Representation_Info : Int range 0 .. 4 := 0;
-- GNAT
-- Set non-zero by -gnatR switch to list representation information.
-- The settings are as follows:
--
-- 0 = no listing of representation information (default as above)
- -- 1 = list rep info for user defined record and array types
- -- 2 = list rep info for all user defined types and objects
+ -- 1 = list rep info for user-defined record and array types
+ -- 2 = list rep info for all user-defined types and objects
-- 3 = like 2, but variable fields are decoded symbolically
+ -- 4 = like 3, but list rep info for relevant compiler-generated types
+
+ -- WARNING: There is a matching C declaration of this variable in fe.h
List_Representation_Info_To_File : Boolean := False;
-- GNAT
- -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3/m to be
+ -- Set true by -gnatRs switch. Causes information from -gnatR[1-4]m to be
-- written to file.rep (where file is the name of the source file) instead
-- of stdout. For example, if file x.adb is compiled using -gnatR2s then
-- representation info is written to x.adb.ref.
List_Representation_Info_To_JSON : Boolean := False;
-- GNAT
- -- Set true by -gnatRj switch. Causes information from -gnatR/1/2/3/m to be
+ -- Set true by -gnatRj switch. Causes information from -gnatR[1-4]m to be
-- output in the JSON data interchange format.
List_Representation_Info_Mechanisms : Boolean := False;
-- before preprocessing occurs. Set to True by switch -s of gnatprep or
-- -s in preprocessing data file for the compiler.
- type Create_Repinfo_File_Proc is access procedure (Src : String);
- type Write_Repinfo_Line_Proc is access procedure (Info : String);
- type Close_Repinfo_File_Proc is access procedure;
- -- Types used for procedure addresses below
-
- Create_Repinfo_File_Access : Create_Repinfo_File_Proc := null;
- Write_Repinfo_Line_Access : Write_Repinfo_Line_Proc := null;
- Close_Repinfo_File_Access : Close_Repinfo_File_Proc := null;
- -- GNAT
- -- These three locations are left null when operating in non-compiler (e.g.
- -- ASIS mode), but when operating in compiler mode, they are set to point
- -- to the three corresponding procedures in Osint-C. The reason for this
- -- slightly strange interface is to stop Repinfo from dragging in Osint in
- -- ASIS mode, which would include lots of unwanted units in the ASIS build.
+ XDR_Stream : Boolean := False;
+ -- GNATBIND
+ -- Set to True to enable XDR in s-stratt.adb. Set by -xdr.
type Create_List_File_Proc is access procedure (S : String);
type Write_List_Info_Proc is access procedure (S : String);
-- Maximum number of processes that should be spawned to carry out
-- compilations.
+ Minimal_Binder : Boolean := False;
+ -- GNATBIND
+ -- Set to True to suppress the generation of objects by the binder that
+ -- are not strictly required for a program to run. Intended for ZFP
+ -- applications that have tight memory constraints.
+
Minimal_Recompilation : Boolean := False;
-- GNATMAKE
-- Set to True if minimal recompilation mode requested
-- make it easier to interface with back ends that implement C semantics.
-- There is a section in Sinfo which describes the transformations made.
- Multiple_Unit_Index : Int := 0;
+ Multiple_Unit_Index : Nat := 0;
-- GNAT
-- This is set non-zero if the current unit is being compiled in multiple
-- unit per file mode, meaning that the current unit is selected from the
-- GNAT
-- Set True if pragma No_Strict_Aliasing with no parameters encountered.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
No_Tagged_Streams : Node_Id := Empty;
-- GNAT
-- If a pragma No_Tagged_Streams is active for the current scope, this
-- points to the corresponding pragma.
+ Nodes_Size_In_Meg : Nat := 0;
+ -- GNAT
+ -- Amount of memory to allocate for all nodes, in units of 2**20 bytes.
+ -- Set by the -gnaten switch; 0 means -gnaten was not given, and a default
+ -- value should be used.
+
Normalize_Scalars : Boolean := False;
-- GNAT, GNATBIND
-- Set True if a pragma Normalize_Scalars applies to the current unit.
-- GNATBIND
-- True if pessimistic elaboration order is to be chosen (-p switch set)
- Polling_Required : Boolean := False;
- -- GNAT
- -- Set to True if polling for asynchronous abort is enabled by using
- -- the -gnatP option for GNAT.
-
Prefix_Exception_Messages : Boolean := False;
-- GNAT
-- Set True to prefix exception messages with entity-name:
-- with'ed indirectly. It is set True by use of either the -gnatg or
-- -gnaty switches, but not by use of the Style_Checks pragma.
- Disable_FE_Inline : Boolean := False;
- Disable_FE_Inline_Always : Boolean := False;
- -- GNAT
- -- Request to disable front end inlining from pragma Inline or pragma
- -- Inline_Always out of the presence of the -fno-inline back end flag
- -- on the command line, regardless of any other switches that are set.
- -- It remains the back end's reponsibility to honor -fno-inline at the
- -- back end level.
-
Suppress_Control_Flow_Optimizations : Boolean := False;
-- GNAT
-- Set by -fpreserve-control-flow. Suppresses control flow optimizations
-- GNAT
-- Set to True if -gnatp (suppress all checks) switch present.
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
Suppress_Options : Suppress_Record;
-- GNAT
-- Indicates outer level setting of check suppression. This initializes
Table_Factor : Int := 1;
-- GNAT
-- Factor by which all initial table sizes set in Alloc are multiplied.
- -- Used in Table to calculate initial table sizes (the initial table size
+ -- Used in Table to calculate initial table sizes. The initial table size
-- is the value in Alloc, used as the Table_Initial parameter value,
-- multiplied by the factor given here. The default value is used if no
-- -gnatT switch appears.
-- Tolerate time stamp and other consistency errors. If this flag is set to
-- True (-t), then inconsistencies result in warnings rather than errors.
+ Transform_Function_Array : Boolean := False;
+ -- GNAT
+ -- If this switch is set True, then functions returning constrained arrays
+ -- are transformed into a procedure with an out parameter, and all calls
+ -- are updated accordingly.
+
Treat_Categorization_Errors_As_Warnings : Boolean := False;
-- Normally categorization errors are true illegalities. If this switch
-- is set, then such errors result in warning messages rather than error
-- Set True to treat pragma Restrictions as Restriction_Warnings. Set by
-- -gnatr switch.
- Tree_Output : Boolean := False;
- -- GNAT
- -- Set to True (-gnatt) to generate output tree file
-
Try_Semantics : Boolean := False;
-- GNAT
-- Flag set to force attempt at semantic analysis, even if parser errors
Unique_Error_Tag : Boolean := Tag_Errors;
-- GNAT
-- Indicates if error messages are to be prefixed by the string error:
- -- Initialized from Tag_Errors, can be forced on with the -gnatU switch.
+ -- Initialized from Tag_Errors, can be forced on with the -gnatU switch and
+ -- disabled with -gnatd_U.
Unnest_Subprogram_Mode : Boolean := False;
-- If true, activates the circuitry for unnesting subprograms (see the spec
-- including warnings on Ada 2012 obsolescent features used in Ada 2012
-- mode. Modified by use of -gnatwy/Y.
+ Warn_On_Ada_2022_Compatibility : Boolean := True;
+ -- GNAT
+ -- Set to True to generate all warnings on Ada 2022 compatibility issues,
+ -- including warnings on Ada 2022 obsolescent features used in Ada 2022
+ -- mode.
+
Warn_On_All_Unread_Out_Parameters : Boolean := False;
-- GNAT
-- Set to True to generate warnings in all cases where a variable is
Warn_On_Suspicious_Modulus_Value : Boolean := True;
-- GNAT
- -- Set to True to generate warnings for suspicious modulus values. The
- -- default is that this warning is enabled. Modified by -gnatw.m/.M.
+ -- Set to True to generate warnings for suspicious modulus values, as well
+ -- as negative literals of a modular type. The default is that this warning
+ -- is enabled. Modified by -gnatw.m/.M.
Warn_On_Unchecked_Conversion : Boolean := True;
-- GNAT
-- Controls treatment of warning messages. If set to Suppress, warning
-- messages are not generated at all. In Normal mode, they are generated
-- but do not count as errors. In Treat_As_Error mode, warning messages are
- -- generated and treated as errors. In Treat_Run_Time_Warnings_As_Errors,
+ -- generated and treated as errors, except for warnings emitted by the
+ -- Compile_Time_Warning pragma. In Treat_Run_Time_Warnings_As_Errors,
-- warning messages regarding errors raised at run time are treated as
-- errors. Note that Warning_Mode = Suppress causes pragma Warnings to be
-- ignored (except for legality checks), unless we are in GNATprove_Mode,
-- which requires pragma Warnings to be stored for the formal verification
-- backend.
- Warnings_As_Errors_Count : Natural;
- -- GNAT
- -- Number of entries stored in Warnings_As_Errors table
-
Wide_Character_Encoding_Method : WC_Encoding_Method := WCEM_Brackets;
-- GNAT, GNATBIND
-- Method used for encoding wide characters in the source program. See
-- set by the command line switches -gnat83/95/2005/2012, and possibly
-- modified by the use of configuration pragmas Ada_*. This switch is used
-- to set the initial value for Ada_Version mode at the start of analysis
- -- of a unit. Note however that the setting of this flag is ignored for
+ -- of a unit. Note however that the setting of this flag is ignored for
-- internal and predefined units (which are always compiled in the most up
-- to date version of Ada).
-- GNAT
-- Set True by use of the configuration pragma Suppress_Exception_Messages
- Extensions_Allowed_Config : Boolean;
- -- GNAT
- -- This is the flag that indicates whether extensions are allowed. It can
- -- be set True either by use of the -gnatX switch, or by use of the
- -- configuration pragma Extensions_Allowed (On). It is always set to True
- -- for internal GNAT units, since extensions are always permitted in such
- -- units.
-
External_Name_Exp_Casing_Config : External_Casing_Type;
-- GNAT
-- This is the value of the configuration switch that controls casing of
-- at the start of each compilation unit, except that it is always
-- set False for predefined units.
- Polling_Required_Config : Boolean;
- -- GNAT
- -- This is the value of the configuration switch that controls polling
- -- mode. It can be set True by the command line switch -gnatP, and then
- -- further modified by the use of pragma Polling in the gnat.adc file. This
- -- flag is used to set the initial value for Polling_Required at the start
- -- of analyzing each unit.
-
Prefix_Exception_Messages_Config : Boolean;
-- The setting of Prefix_Exception_Messages from configuration pragmas
-- is ignored for internal and predefined units (which are always compiled
-- with the standard Size semantics).
- Warnings_As_Errors_Count_Config : Natural;
- -- GNAT
- -- Count of pattern strings stored from Warning_As_Error pragmas
-
type Config_Switches_Type is private;
-- Type used to save values of the switches set from Config values
-- allocated dispatch tables. If it is True, then the front end will
-- generate static aggregates for dispatch tables that contain forward
-- references to addresses of subprograms not seen yet, and the back end
- -- must be prepared to handle this case. If it is False, then the front
- -- end generates assignments to initialize the dispatch table, and there
- -- are no such forward references. By default we build statically allocated
- -- dispatch tables for all library level tagged types in all platforms.This
- -- behavior can be disabled using switch -gnatd.t which will set this flag
- -- to False and revert to the previous dynamic behavior.
+ -- must be prepared to handle this case. If it is False, then the front end
+ -- generates assignments to initialize the dispatch table, and there are
+ -- no such forward references. By default we build statically allocated
+ -- dispatch tables for all library-level tagged types in all platforms.
+ -- This behavior can be disabled using switch -gnatd.t which will set
+ -- this flag to False and revert to the previous dynamic behavior.
Expander_Active : Boolean := False;
-- A flag that indicates if expansion is active (True) or deactivated
-- be in the spec of Expander, but it is referenced by Errout, and it
-- really seems wrong for Errout to depend on Expander.
- -----------------------
- -- Tree I/O Routines --
- -----------------------
-
- procedure Tree_Read;
- -- Reads switch settings from current tree file using Tree_Read
-
- procedure Tree_Write;
- -- Writes out switch settings to current tree file using Tree_Write
-
- --------------------------
- -- ASIS Version Control --
- --------------------------
-
- -- These two variables (Tree_Version_String and Tree_ASIS_Version_Number)
- -- are supposed to be used in the GNAT/ASIS version check performed in
- -- the ASIS code (this package is also a part of the ASIS implementation).
- -- They are set by Tree_Read procedure, so they represent the version
- -- number (and the version string) of the compiler which has created the
- -- tree, and they are supposed to be compared with the corresponding values
- -- from the Tree_IO and Gnatvsn packages which also are a part of ASIS
- -- implementation.
-
- Tree_Version_String : String_Access;
- -- Used to store the compiler version string read from a tree file to check
- -- if it is from the same date as stored in the version string in Gnatvsn.
- -- We require that ASIS Pro can be used only with GNAT Pro, but we allow
- -- non-Pro ASIS and ASIS-based tools to be used with any version of the
- -- GNAT compiler. Therefore, we need the possibility to compare the dates
- -- of the corresponding source sets, using version strings that may be
- -- of different lengths.
-
- Tree_ASIS_Version_Number : Int;
- -- Used to store the ASIS version number read from a tree file to check if
- -- it is the same as stored in the ASIS version number in Tree_IO.
+ Tagged_Seen : Boolean := False;
+ -- Set True by the parser if the "tagged" reserved word is seen. This is
+ -- needed in Exp_Put_Image (see that package for documentation).
-----------------------------------
-- Modes for Formal Verification --
---------------------------
-- The following array would more reasonably be located in Err_Vars or
- -- Errour, but we put them here to deal with licensing issues (we need
+ -- Errout, but we put them here to deal with licensing issues (we need
-- this to have the GPL exception licensing, since these variables and
-- subprograms are accessed from units with this licensing).
Warnings_As_Errors : array (1 .. 10_000) of String_Ptr;
- -- Table for recording Warning_As_Error pragmas as they are processed.
- -- It would be nicer to use Table, but there are circular elaboration
- -- problems if we try to do this, and an attempt to find some other
- -- appropriately licensed unit to declare this as a Table failed with
- -- various elaboration circularities. Memory is getting cheap these days!
+ -- Table for recording Warning_As_Error pragmas as they are processed. It
+ -- would be nicer to use Table, but there are circular elaboration problems
+ -- if we try to do this, and an attempt to find some other appropriately
+ -- licensed unit to declare this as a Table failed with various elaboration
+ -- circularities.
+
+ Warnings_As_Errors_Count : Natural;
+ -- GNAT
+ -- Number of entries stored in Warnings_As_Errors table
+
+ Warnings_As_Errors_Count_Config : Natural;
+ -- GNAT
+ -- Count of pattern strings stored from Warning_As_Error pragmas
---------------
-- GNAT_Mode --
-- GNAT
-- True if compiling in GNAT system mode (-gnatg switch)
+ -- WARNING: There is a matching C declaration of this variable in fe.h
+
GNAT_Mode_Config : Boolean := False;
-- GNAT
-- True if -gnatg switch is present. GNAT_Mode may be temporary set to
--------------------------
private
-
-- The following type is used to save and restore settings of switches in
-- Opt that represent the configuration (i.e. result of config pragmas).
Default_SSO : Character;
Dynamic_Elaboration_Checks : Boolean;
Exception_Locations_Suppressed : Boolean;
- Extensions_Allowed : Boolean;
External_Name_Exp_Casing : External_Casing_Type;
External_Name_Imp_Casing : External_Casing_Type;
Fast_Math : Boolean;
Optimize_Alignment : Character;
Optimize_Alignment_Local : Boolean;
Persistent_BSS_Mode : Boolean;
- Polling_Required : Boolean;
Prefix_Exception_Messages : Boolean;
SPARK_Mode : SPARK_Mode_Type;
SPARK_Mode_Pragma : Node_Id;
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