-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2009, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2011, 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- --
-- use the Project Manager. These tools include gnatmake, gnatname, the gnat
-- driver, gnatclean, gprbuild and gprclean.
-with Debug;
with Hostparm; use Hostparm;
with Types; use Types;
+pragma Warnings (Off);
+-- This package is used also by gnatcoll
with System.Strings; use System.Strings;
with System.WCh_Con; use System.WCh_Con;
+pragma Warnings (On);
package Opt is
+ ----------------------
+ -- Checksum Control --
+ ----------------------
+
+ -- Checksums are computed for sources to check for sources being the same
+ -- 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.
+
----------------------------------------------
-- Settings of Modes for Current Processing --
----------------------------------------------
-- case of some binder variables, Gnatbind.Scan_Bind_Arg may modify
-- the default values.
- Ada_Bind_File : Boolean := True;
- -- GNATBIND, GNATLINK
- -- Set True if binder file to be generated in Ada rather than C
-
- type Ada_Version_Type is (Ada_83, Ada_95, Ada_05);
- pragma Warnings (Off, Ada_Version_Type);
+ type Ada_Version_Type is (Ada_83, Ada_95, Ada_2005, Ada_2012);
+ pragma Ordered (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.
- -- The Warnings_Off pragma stops warnings for Ada_Version >= Ada_05,
- -- which we want to allow, so that things work OK when Ada_15 is added!
- -- This warning is now removed, so this pragma can be removed some time???
+ -- Think twice before using "="; Ada_Version >= Ada_2012 is more likely
+ -- what you want, because it will apply to future versions of the language.
- Ada_Version_Default : Ada_Version_Type := Ada_05;
+ Ada_Version_Default : constant Ada_Version_Type := Ada_2005;
+ pragma Warnings (Off, Ada_Version_Default);
-- GNAT
- -- Default Ada version if no switch given
+ -- Default Ada version if no switch given. The Warnings off is to kill
+ -- constant condition warnings.
+ --
+ -- WARNING: some scripts rely on the format of this line of code. Any
+ -- change must be coordinated with the scripts requirements.
Ada_Version : Ada_Version_Type := Ada_Version_Default;
-- GNAT
-- or internal units, so it reflects the Ada version explicitly set
-- using configuration pragmas or compiler switches (or if neither
-- appears, it remains set to Ada_Version_Default). This is used in
- -- the rare cases (notably for pragmas Preelaborate_05 and Pure_05)
+ -- the rare cases (notably for pragmas Preelaborate_05 and Pure_05/12)
-- where in the run-time we want the explicit version set.
- Ada_Version_Runtime : Ada_Version_Type := Ada_05;
+ Ada_Version_Runtime : Ada_Version_Type := Ada_2012;
-- GNAT
-- Ada version used to compile the runtime. Used to set Ada_Version (but
-- not Ada_Version_Explicit) when compiling predefined or internal units.
-- 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
+ -- other by reference types, and avoid copies. If this flag is False, then
+ -- the front end does special expansion for conditional expressions to make
+ -- sure that no copy occurs. If the flag is True, then the expansion for
+ -- conditional expressions relies on the back end properly handling things.
+ -- Currently the default is False for all cases (set in gnat1drv). The
+ -- default can be modified using -gnatd.L (sets the flag True).
+
Bind_Alternate_Main_Name : Boolean := False;
-- GNATBIND
-- True if main should be called Alternate_Main_Name.all.
Bind_For_Library : Boolean := False;
-- GNATBIND
- -- Set to True if the binder needs to generate a file designed for
- -- building a library. May be set to True by Gnatbind.Scan_Bind_Arg.
+ -- Set to True if the binder needs to generate a file designed for building
+ -- a library. May be set to True by Gnatbind.Scan_Bind_Arg.
Bind_Only : Boolean := False;
-- GNATMAKE, GPRMAKE, GPRBUILD
-- GNAT
-- This points to the list of N_Pragma nodes for Check_Policy pragmas
-- that are linked through the Next_Pragma fields, with the list being
- -- terminated by Empty. The order is most recently processed first.
+ -- terminated by Empty. The order is most recently processed first. Note
+ -- that Push_Scope and Pop_Scope in Sem_Ch8 save and restore the value
+ -- of this variable, implementing the required scope control for pragmas
+ -- appearing a declarative part.
Check_Readonly_Files : Boolean := False;
-- GNATMAKE
-- Set to True to enable checking for unused withs, and also the case
-- of withing a package and using none of the entities in the package.
+ CodePeer_Mode : Boolean := False;
+ -- GNAT, GNATBIND
+ -- Enable full CodePeer mode (SCIL generation, disable switches that
+ -- interact badly with it, etc...).
+
Commands_To_Stdout : Boolean := False;
-- GNATMAKE
-- True if echoed commands to be written to stdout instead of stderr
-- GNAT
-- Enable debug statements from pragma Debug
+ Debug_Pragmas_Disabled : Boolean := False;
+ -- GNAT
+ -- Debug pragmas completely disabled (no semantic checking)
+
subtype Debug_Level_Value is Nat range 0 .. 3;
Debugger_Level : Debug_Level_Value := 0;
-- GNATBIND
-- default was set by the binder, and that the default should be the
-- initial value of System.Secondary_Stack.Default_Secondary_Stack_Size.
+ Default_Pool : Node_Id := Empty;
+ -- GNAT
+ -- Used to record the storage pool name (or null literal) that is the
+ -- argument of an applicable pragma Default_Storage_Pool.
+ -- Empty: No pragma Default_Storage_Pool applies.
+ -- N_Null node: "pragma Default_Storage_Pool (null);" applies.
+ -- otherwise: "pragma Default_Storage_Pool (X);" applies, and
+ -- this points to the name X.
+ -- Push_Scope and Pop_Scope in Sem_Ch8 save and restore this value.
+
Detect_Blocking : Boolean := False;
-- GNAT
-- Set True to force the run time to raise Program_Error if calls to
-- It is used to set Warn_On_Exception_Propagation True if the restriction
-- No_Exception_Propagation is set.
+ Exception_Extra_Info : Boolean := False;
+ -- GNAT
+ -- True when switch -gnateE is used. When True, generate extra information
+ -- associated with exception messages (in particular range and index
+ -- checks).
+
Exception_Locations_Suppressed : Boolean := False;
-- GNAT
- -- This flag is set True if a Suppress_Exception_Locations configuration
- -- pragma is currently active.
+ -- Set to True if a Suppress_Exception_Locations configuration pragma is
+ -- currently active.
type Exception_Mechanism_Type is
-- Determines the handling of exceptions. See Exp_Ch11 for details
Front_End_Setjmp_Longjmp_Exceptions;
-- GNAT
-- Set to the appropriate value depending on the default as given in
- -- system.ads (ZCX_By_Default, GCC_ZCX_Support).
- -- The C convention is there to make this variable accessible to gigi.
+ -- system.ads (ZCX_By_Default). The C convention is there to make this
+ -- variable accessible to gigi.
Exception_Tracebacks : Boolean := False;
-- GNATBIND
-- Force generation of ALI file even if errors are encountered.
-- Also forces generation of tree file if -gnatt is also set.
+ Disable_ALI_File : Boolean := False;
+ -- GNAT
+ -- Disable generation of ALI file
+
Force_Checking_Of_Elaboration_Flags : Boolean := False;
-- GNATBIND
-- True if binding with forced checking of the elaboration flags
-- True when switch -gnateG is used. When True, create in a file
-- <source>.prep, if the source is preprocessed.
+ Generate_SCO : Boolean := False;
+ -- GNAT
+ -- True when switch -gnateS is used. When True, Source Coverage Obligation
+ -- (SCO) information is generated and output in the ALI file. See unit
+ -- Par_SCO for full details.
+
Generating_Code : Boolean := False;
-- GNAT
-- True if the frontend finished its work and has called the backend to
-- GNAT
-- True if compiling in GNAT system mode (-gnatg switch)
+ Heap_Size : Nat := 0;
+ -- GNATBIND
+ -- Heap size for memory allocations. Valid values are 32 and 64. Only
+ -- available on VMS.
+
HLO_Active : Boolean := False;
-- GNAT
-- True if High Level Optimizer is activated (-gnatH switch)
-- then elaboration flag checks are to be generated in the binder
-- generated file.
- Inspector_Mode : Boolean renames Debug.Debug_Flag_Dot_II;
+ Generate_SCIL : Boolean := False;
-- GNAT
- -- True if compiling in inspector mode (-gnatd.I switch).
- -- Only relevant when VM_Target /= None. The compiler will attempt to
- -- generate code even in case of unsupported construct, so that the byte
- -- code can be used by static analysis tools.
+ -- Set True to activate SCIL code generation.
Invalid_Value_Used : Boolean := False;
-- GNAT
Follow_Links_For_Files : Boolean := False;
-- PROJECT MANAGER
- -- Set to True (-eL) to process the project files in trusted mode
- -- If Follow_Links is False, it is assumed that the project doesn't contain
+ -- Set to True (-eL) to process the project files in trusted mode. If
+ -- Follow_Links is False, it is assumed that the project doesn't contain
-- any file duplicated through symbolic links (although the latter are
-- still valid if they point to a file which is outside of the project),
-- and that no directory has a name which is a valid source name.
- Follow_Links_For_Dirs : Boolean := True;
+ Follow_Links_For_Dirs : Boolean := False;
-- PROJECT MANAGER
- -- Whether directories can be links in this project, and therefore
- -- additional system calls should be performed to ensure we always see the
- -- same full name for each directory.
+ -- Set to True if directories can be links in this project, and therefore
+ -- additional system calls must be performed to ensure that we always see
+ -- the same full name for each directory.
Front_End_Inlining : Boolean := False;
-- GNAT
Inline_Processing_Required : Boolean := False;
-- GNAT
- -- Set True if inline processing is required. Inline processing is
- -- required if an active Inline pragma is processed. The flag is set
- -- for a pragma Inline or Inline_Always that is actually active.
+ -- Set True if inline processing is required. Inline processing is required
+ -- if an active Inline pragma is processed. The flag is set for a pragma
+ -- Inline or Inline_Always that is actually active.
In_Place_Mode : Boolean := False;
-- GNATMAKE
Keep_Going : Boolean := False;
-- GNATMAKE, GPRMAKE, GPRBUILD
- -- When True signals to ignore compilation errors and keep
- -- processing sources until there is no more work.
+ -- When True signals to ignore compilation errors and keep processing
+ -- sources until there is no more work.
Keep_Temporary_Files : Boolean := False;
-- GNATCMD
Link_Only : Boolean := False;
-- GNATMAKE, GPRMAKE, GPRBUILD
- -- Set to True to skip compile and bind steps
- -- (except when Bind_Only is set to True).
+ -- Set to True to skip compile and bind steps (except when Bind_Only is
+ -- set to True).
+
+ List_Inherited_Aspects : Boolean := False;
+ -- GNAT
+ -- List inherited invariants, preconditions, and postconditions from
+ -- Invariant'Class, Pre'Class, and Post'Class aspects. Also list inherited
+ -- subtype predicates. Set True by use of -gnatw.l and False by use of
+ -- -gnatw.L.
List_Restrictions : Boolean := False;
-- GNATBIND
List_Representation_Info_To_File : Boolean := False;
-- GNAT
- -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3
- -- 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.
+ -- Set true by -gnatRs switch. Causes information from -gnatR/1/2/3 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_Mechanisms : Boolean := False;
-- GNAT
- -- Set true by -gnatRm switch. Causes information on mechanisms to
- -- be included in the representation output information.
+ -- Set true by -gnatRm switch. Causes information on mechanisms to be
+ -- included in the representation output information.
List_Preprocessing_Symbols : Boolean := False;
-- GNAT, GNATPREP
-- Set to True if symbols for preprocessing a source are to be listed
- -- before preprocessing occurs. Set to True by switch -s of gnatprep
- -- or -s in preprocessing data file for the compiler.
+ -- 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);
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 prevent Repinfo
- -- from dragging in Osint in ASIS mode, which would include a lot of
- -- unwanted units in the ASIS build.
+ -- 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.
type Create_List_File_Proc is access procedure (S : String);
type Write_List_Info_Proc is access procedure (S : String);
-- set to point to the three corresponding procedures in Osint-C. The
-- reason for this slightly strange interface is to prevent Repinfo
-- from dragging in Osint-C in the binder, which would include unwanted
- -- units in the binder.
+ -- units in the binder.
Locking_Policy : Character := ' ';
-- GNAT, GNATBIND
- -- Set to ' ' for the default case (no locking policy specified).
- -- Reset to first character (uppercase) of locking policy name if a
- -- valid pragma Locking_Policy is encountered.
+ -- Set to ' ' for the default case (no locking policy specified). Reset to
+ -- first character (uppercase) of locking policy name if a valid pragma
+ -- Locking_Policy is encountered.
Locking_Policy_Sloc : Source_Ptr := No_Location;
-- GNAT, GNATBIND
- -- Remember location of previous Locking_Policy pragma. This is used
- -- for inconsistency error messages. A value of System_Location is
- -- used if the policy is set in package System.
+ -- Remember location of previous Locking_Policy pragma. This is used for
+ -- inconsistency error messages. A value of System_Location is used if the
+ -- policy is set in package System.
Look_In_Primary_Dir : Boolean := True;
-- GNAT, GNATBIND, GNATMAKE, GNATCLEAN
- -- Set to False if a -I- was present on the command line.
- -- When True we are allowed to look in the primary directory to locate
- -- other source or library files.
+ -- Set to False if a -I- was present on the command line. When True we are
+ -- allowed to look in the primary directory to locate other source or
+ -- library files.
Make_Steps : Boolean := False;
-- GNATMAKE
-- This flag is set True if a No_Run_Time pragma is encountered. See
-- spec of Rtsfind for a full description of handling of this pragma.
+ No_Split_Units : Boolean := False;
+ -- GPRBUILD
+ -- Set to True with switch --no-split-units. When True, unit sources, spec,
+ -- body and subunits, must all be in the same project.This is checked after
+ -- each compilation.
+
No_Stdinc : Boolean := False;
-- GNAT, GNATBIND, GNATMAKE, GNATFIND, GNATXREF
-- Set to True if no default source search dirs added to search list
-- GNATMAKE
-- Set to True when an object directory is specified with option -D
+ One_Compilation_Per_Obj_Dir : Boolean := False;
+ -- GNATMAKE, GPRBUILD
+ -- Set to True with switch --single-compile-per-obj-dir. When True, there
+ -- cannot be simultaneous compilations with the object files in the same
+ -- object directory, if project files are used.
+
type Operating_Mode_Type is (Check_Syntax, Check_Semantics, Generate_Code);
Operating_Mode : Operating_Mode_Type := Generate_Code;
-- GNAT
Original_Operating_Mode : Operating_Mode_Type := Generate_Code;
-- GNAT
- -- Indicates the original operating mode of the compiler as set by
- -- compiler options. This is identical to Operating_Mode except that
- -- this is not affected by errors.
+ -- Indicates the original operating mode of the compiler as set by compiler
+ -- options. This is identical to Operating_Mode except that this is not
+ -- affected by errors.
Optimization_Level : Int;
pragma Import (C, Optimization_Level, "optimize");
-- Constant reflecting the optimization level (0,1,2,3 for -O0,-O1,-O2,-O3)
+ -- See jmissing.c and aamissing.c for definitions for dotnet/jgnat and
+ -- GNAAMP back ends.
+
+ Optimize_Size : Int;
+ pragma Import (C, Optimize_Size, "optimize_size");
+ -- Constant reflecting setting of -Os (optimize for size). Set to nonzero
+ -- in -Os mode and set to zero otherwise. See jmissing.c and aamissing.c
+ -- for definitions of "optimize_size" for dotnet/jgnat and GNAAMP backends
Output_File_Name_Present : Boolean := False;
-- GNATBIND, GNAT, GNATMAKE, GPRMAKE
- -- Set to True when the output C file name is given with option -o
- -- for GNATBIND, when the object file name is given with option
- -- -gnatO for GNAT or when the executable is given with option -o
- -- for GNATMAKE or GPRMAKE.
+ -- Set to True when the output C file name is given with option -o for
+ -- GNATBIND, when the object file name is given with option -gnatO for GNAT
+ -- or when the executable is given with option -o for GNATMAKE or GPRMAKE.
Output_Linker_Option_List : Boolean := False;
-- GNATBIND
-- True if output of list of linker options is requested (-K switch set)
- Output_Object_List : Boolean := False;
+ Output_ALI_List : Boolean := False;
+ ALI_List_Filename : String_Ptr;
-- GNATBIND
- -- True if output of list of objects is requested (-O switch set)
+ -- True if output of list of ALIs is requested (-A switch set). List is
+ -- output under the given filename, or standard output if not specified.
+
+ Output_Object_List : Boolean := False;
+ Object_List_Filename : String_Ptr;
+ -- GNATBIND
+ -- True if output of list of objects is requested (-O switch set). List is
+ -- output under the given filename, or standard output if not specified.
Overflow_Checks_Unsuppressed : Boolean := False;
-- GNAT
- -- Set to True if at least one pragma Unsuppress
+ -- Set to True if at least one occurrence of pragma Unsuppress
-- (All_Checks|Overflow_Checks) has been processed.
Persistent_BSS_Mode : Boolean := False;
-- GNAT
-- Set by switch -gnatep=. The file name of the preprocessing data file.
+ Preprocessing_Symbol_Defs : String_List_Access := new String_List (1 .. 4);
+ -- An extensible array to temporarily stores symbol definitions specified
+ -- on the command line with -gnateD switches.
+ -- What is this magic constant 4 ???
+ -- What is extensible about this fixed length array ???
+
+ Preprocessing_Symbol_Last : Natural := 0;
+ -- Index of last symbol definition in array Symbol_Definitions
+
Print_Generated_Code : Boolean := False;
-- GNAT
-- Set to True to enable output of generated code in source form. This
type Usage is (Unknown, Not_In_Use, In_Use);
Project_File_In_Use : Usage := Unknown;
-- GNAT
- -- Indicates if a project file is used or not.
- -- Set to In_Use by the first SFNP pragma.
+ -- Indicates if a project file is used or not. Set to In_Use by the first
+ -- SFNP pragma.
Queuing_Policy : Character := ' ';
-- GNAT, GNATBIND
- -- Set to ' ' for the default case (no queuing policy specified).
- -- Reset to first character (uppercase) of locking policy name if a valid
+ -- Set to ' ' for the default case (no queuing policy specified). Reset to
+ -- first character (uppercase) of locking policy name if a valid
-- Queuing_Policy pragma is encountered.
Queuing_Policy_Sloc : Source_Ptr := No_Location;
-- GNAT, GNATBIND
- -- Remember location of previous Queuing_Policy pragma. This is used
- -- for inconsistency error messages. A value of System_Location is
- -- used if the policy is set in package System.
+ -- Remember location of previous Queuing_Policy pragma. This is used for
+ -- inconsistency error messages. A value of System_Location is used if the
+ -- policy is set in package System.
Quiet_Output : Boolean := False;
-- GNATMAKE, GNATCLEAN, GPRMAKE, GPRBUILD, GPRCLEAN
Search_Directory_Present : Boolean := False;
-- GNAT
- -- Set to True when argument is -I. Reset to False when next argument,
- -- a search directory path is taken into account. Note that this is
- -- quite different from other switches in this section in that it is
- -- only set in a transitory manner as a result of scanning a -I switch
- -- with no file name, and if set, is an indication that the next argument
- -- is to be treated as a file name.
+ -- Set to True when argument is -I. Reset to False when next argument, a
+ -- search directory path is taken into account. Note that this is quite
+ -- different from other switches in this section in that it is only set in
+ -- a transitory manner as a result of scanning a -I switch with no file
+ -- name, and if set, is an indication that the next argument is to be
+ -- treated as a file name.
Sec_Stack_Used : Boolean := False;
-- GNAT, GBATBIND
- -- Set True if generated code uses the System.Secondary_Stack package.
- -- For the binder, set if any unit uses the secondary stack package.
+ -- Set True if generated code uses the System.Secondary_Stack package. For
+ -- the binder, set if any unit uses the secondary stack package.
Setup_Projects : Boolean := False;
-- GNAT DRIVER
Shared_Libgnat : Boolean;
-- GNATBIND
- -- Set to True if a shared libgnat is requested by using the -shared
- -- option for GNATBIND and to False when using the -static option. The
- -- value of this flag is set by Gnatbind.Scan_Bind_Arg.
+ -- Set to True if a shared libgnat is requested by using the -shared option
+ -- for GNATBIND and to False when using the -static option. The value of
+ -- this flag is set by Gnatbind.Scan_Bind_Arg.
+
+ Short_Circuit_And_Or : Boolean := False;
+ -- GNAT
+ -- Set True if a pragma Short_Circuit_And_Or applies to the current unit.
+
+ Short_Descriptors : Boolean := False;
+ -- GNAT
+ -- Set True if a pragma Short_Descriptors applies to the current unit.
Sprint_Line_Limit : Nat := 72;
+ -- GNAT
-- Limit values for chopping long lines in Sprint output, can be reset
-- by use of NNN parameter with -gnatG or -gnatD switches.
Style_Check : Boolean := False;
-- GNAT
- -- Set True to perform style checks. Activates checks carried out
- -- in package Style (see body of this package for details of checks)
- -- This flag is set True by either the -gnatg or -gnaty switches.
+ -- Set True to perform style checks. Activates checks carried out in
+ -- package Style (see body of this package for details of checks). This
+ -- flag is set True by either the -gnatg or -gnaty switches.
Suppress_All_Inlining : Boolean := False;
-- GNAT
-- Set by -fno-inline. Suppresses all inlining, both front end and back end
-- regardless of any other switches that are set.
+ Suppress_Control_Flow_Optimizations : Boolean := False;
+ -- GNAT
+ -- Set by -fpreserve-control-flow. Suppresses control flow optimizations
+ -- that interfere with coverage analysis based on the object code.
+
System_Extend_Pragma_Arg : Node_Id := Empty;
-- GNAT
-- Set non-empty if and only if a correct Extend_System pragma was present
-- multiplied by the factor given here. The default value is used if no
-- -gnatT switch appears.
+ Tagged_Type_Expansion : Boolean := True;
+ -- GNAT
+ -- Set True if tagged types and interfaces should be expanded by the
+ -- front-end. If False, the original tree is left unexpanded for tagged
+ -- types and dispatching calls, assuming the underlying target supports
+ -- it (e.g. in the JVM case).
+
Task_Dispatching_Policy : Character := ' ';
-- GNAT, GNATBIND
-- Set to ' ' for the default case (no task dispatching policy specified).
-- Tolerate time stamp and other consistency errors. If this flag is set to
-- True (-t), then inconsistencies result in warnings rather than errors.
+ 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
+ -- messages. Set True by -gnateP (P for Pure/Preelaborate).
+
Treat_Restrictions_As_Warnings : Boolean := False;
-- GNAT
-- Set True to treat pragma Restrictions as Restriction_Warnings. Set by
-- the other hand, most such blowups will be caught cleanly and simply
-- say compilation abandoned. This flag is set to True by -gnatq or -gnatQ.
+ Unchecked_Shared_Lib_Imports : Boolean := False;
+ -- GPRBUILD
+ -- Set to True when shared library projects are allowed to import projects
+ -- that are not shared library projects. Set by switch
+ -- --unchecked-shared-lib-imports.
+
Undefined_Symbols_Are_False : Boolean := False;
-- GNAT, GNATPREP
-- Set to True by switch -u of gnatprep or -u in the preprocessing data
-- set True, and upper half characters in the source indicate the start of
-- a wide character sequence. Set by -gnatW or -W switches.
+ Use_Include_Path_File : Boolean := False;
+ -- GNATMAKE, GPRBUILD
+ -- When True, create a source search path file, even when a mapping file
+ -- is used.
+
Usage_Requested : Boolean := False;
-- GNAT, GNATBIND, GNATMAKE
-- Set to True if -h (-gnath for the compiler) switch encountered
-- requesting usage information
+ Use_Expression_With_Actions : Boolean;
+ -- The N_Expression_With_Actions node has been introduced relatively
+ -- recently, and not all back ends are prepared to handle it yet. So
+ -- we use this flag to suppress its use during a transitional period.
+ -- Currently the default is False for all cases (set in gnat1drv).
+ -- The default can be modified using -gnatd.X/-gnatd.Y.
+
Use_Pragma_Linker_Constructor : Boolean := False;
-- GNATBIND
-- True if pragma Linker_Constructor applies to adainit
-- information sent to standard output, also header, copyright and summary)
type Verbosity_Level_Type is (None, Low, Medium, High);
+ pragma Ordered (Verbosity_Level_Type);
Verbosity_Level : Verbosity_Level_Type := High;
-- GNATMAKE, GPRMAKE
-- Modified by gnatmake or gprmake switches -v, -vl, -vm, -vh. Indicates
-- including warnings on Ada 2005 obsolescent features used in Ada 2005
-- mode. Set False by -gnatwY.
- Warn_On_Parameter_Order : Boolean := False;
+ Warn_On_Ada_2012_Compatibility : Boolean := True;
-- GNAT
- -- Set to True to generate warnings for cases where the argument list for
- -- a call is a sequence of identifiers that match the formal identifiers,
- -- but are in the wrong order.
+ -- Set to True to generate all warnings on Ada 2012 compatibility issues,
+ -- including warnings on Ada 2012 obsolescent features used in Ada 2012
+ -- mode. Set False by -gnatwY.
+
+ Warn_On_All_Unread_Out_Parameters : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings in all cases where a variable is
+ -- modified by being passed as to an OUT formal, but the resulting value is
+ -- never read. The default is that this warning is suppressed, except in
+ -- the case of
Warn_On_Assertion_Failure : Boolean := True;
-- GNAT
-- with literals or S'Length, presumably assuming a lower bound of one. Set
-- False by -gnatwW.
+ Warn_On_Atomic_Synchronization : Boolean := False;
+ -- GNAT
+ -- Set to True to generate information messages for atomic synchronization.
+ -- Set True by use of -gnatw.n.
+
Warn_On_Bad_Fixed_Value : Boolean := False;
-- GNAT
-- Set to True to generate warnings for static fixed-point expression
-- but only if there is only one out parameter for the procedure involved.
-- The default is that this warning is suppressed.
- Warn_On_All_Unread_Out_Parameters : Boolean := False;
- -- GNAT
- -- Set to True to generate warnings in all cases where a variable is
- -- modified by being passed as to an OUT formal, but the resulting value is
- -- never read. The default is that this warning is suppressed, except in
- -- the case of
-
Warn_On_No_Value_Assigned : Boolean := True;
-- GNAT
-- Set to True to generate warnings if no value is ever assigned to a
-- use this to avoid turning it on by default when No_Exception_Propagation
-- restriction is set and an exception handler is present.
+ Warn_On_Object_Renames_Function : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings when a function result is renamed as
+ -- an object. The default is that this warning is disabled.
+
Warn_On_Obsolescent_Feature : Boolean := False;
-- GNAT
-- Set to True to generate warnings on use of any feature in Annex or if a
-- subprogram is called for which a pragma Obsolescent applies.
+ Warn_On_Overlap : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings when a writable actual which is not
+ -- a by-copy type overlaps with another actual in a subprogram call.
+
Warn_On_Questionable_Missing_Parens : Boolean := True;
-- GNAT
-- Set to True to generate warnings for cases where parentheses are missing
-- and the usage is questionable, because the intent is unclear.
+ Warn_On_Parameter_Order : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings for cases where the argument list for
+ -- a call is a sequence of identifiers that match the formal identifiers,
+ -- but are in the wrong order.
+
Warn_On_Redundant_Constructs : Boolean := False;
-- GNAT
-- Set to True to generate warnings for redundant constructs (e.g. useless
-- assignments/conversions). The default is that this warning is disabled.
- Warn_On_Object_Renames_Function : Boolean := False;
- -- GNAT
- -- Set to True to generate warnings when a function result is renamed as
- -- an object. The default is that this warning is disabled.
-
Warn_On_Reverse_Bit_Order : Boolean := True;
-- GNAT
-- Set to True to generate warning (informational) messages for component
-- clauses that are affected by non-standard bit-order. The default is
-- that this warning is enabled.
+ Warn_On_Suspicious_Contract : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings for suspicious contracts expressed as
+ -- pragmas or aspects precondition and postcondition. The default is that
+ -- this warning is disabled.
+
+ 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.
+
Warn_On_Unchecked_Conversion : Boolean := True;
-- GNAT
-- Set to True to generate warnings for unchecked conversions that may have
-- non-portable semantics (e.g. because sizes of types differ). The default
-- is that this warning is enabled.
+ Warn_On_Unordered_Enumeration_Type : Boolean := False;
+ -- GNAT
+ -- Set to True to generate warnings for inappropriate uses (comparisons
+ -- and explicit ranges) on unordered enumeration types (which includes
+ -- all enumeration types for which pragma Ordered is not given). The
+ -- default is that this warning is disabled.
+
Warn_On_Unrecognized_Pragma : Boolean := True;
-- GNAT
-- Set to True to generate warnings for unrecognized pragmas. The default
-- GNAT
-- This is the value of the configuration switch for the Ada 83 mode, as
-- set by the command line switches -gnat83/95/05, and possibly modified by
- -- the use of configuration pragmas Ada_83/Ada95/Ada05. 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
- -- internal and predefined units (which are always compiled in the most up
- -- to date version of Ada).
+ -- 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 internal and
+ -- predefined units (which are always compiled in the most up to date
+ -- version of Ada).
Ada_Version_Explicit_Config : Ada_Version_Type;
-- GNAT
-- terminated by Empty. The order is most recently processed first. This
-- list includes only those pragmas in configuration pragma files.
+ Debug_Pragmas_Disabled_Config : Boolean;
+ -- GNAT
+ -- This is the value of the configuration switch for debug pragmas disabled
+ -- mode, as possibly set by use of the configuration pragma Debug_Policy.
+
Debug_Pragmas_Enabled_Config : Boolean;
-- GNAT
-- This is the value of the configuration switch for debug pragmas enabled
-- mode, as possibly set by the command line switch -gnata and possibly
-- modified by the use of the configuration pragma Debug_Policy.
+ Default_Pool_Config : Node_Id := Empty;
+ -- GNAT
+ -- Same as Default_Pool above, except this is only for Default_Storage_Pool
+ -- pragmas that are configuration pragmas.
+
Dynamic_Elaboration_Checks_Config : Boolean := False;
-- GNAT
-- Set True for dynamic elaboration checking mode, as set by the -gnatE
-- used to set the initial value of Fast_Math at the start of each new
-- compilation unit.
+ Initialize_Scalars_Config : Boolean;
+ -- GNAT
+ -- This is the value of the configuration switch that is set by the
+ -- pragma Initialize_Scalars when it appears in the gnat.adc file.
+ -- This switch is not set when the pragma appears ahead of a given
+ -- unit, so it does not affect the compilation of other units.
+
Optimize_Alignment_Config : Character;
-- GNAT
-- This is the value of the configuration switch that controls the
-- flag is used to set the initial value for Polling_Required at the start
-- of analyzing each unit.
+ Short_Descriptors_Config : Boolean;
+ -- GNAT
+ -- This is the value of the configuration switch that controls the use of
+ -- Short_Descriptors for setting descriptor default sizes. It can be set
+ -- True by the use of the pragma Short_Descriptors in the gnat.adc file.
+ -- This flag is used to set the initial value for Short_Descriptors at the
+ -- start of analyzing each unit.
+
Use_VADS_Size_Config : Boolean;
-- GNAT
-- This is the value of the configuration switch that controls the use of
-- this flag, see package Expander. Indeed this flag might more logically
-- be in the spec of Expander, but it is referenced by Errout, and it
-- really seems wrong for Errout to depend on Expander.
+ --
+ -- Note: for many purposes, it is more appropriate to test the flag
+ -- Full_Expander_Active, which also checks that Alfa mode is not active.
Static_Dispatch_Tables : Boolean := True;
-- This flag indicates if the backend supports generation of statically
-- 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.
+ -----------------------------------
+ -- Modes for Formal Verification --
+ -----------------------------------
+
+ Alfa_Mode : Boolean := False;
+ -- Specific compiling mode targeting formal verification through the
+ -- generation of Why code for those parts of the input code that belong to
+ -- the Alfa subset of Ada. Set by debug flag -gnatd.F.
+
+ Strict_Alfa_Mode : Boolean := False;
+ -- Interpret compiler permissions as strictly as possible. E.g. base ranges
+ -- for integers are limited to the strict minimum with this option. Set by
+ -- debug flag -gnatd.D.
+
+ function Full_Expander_Active return Boolean;
+ pragma Inline (Full_Expander_Active);
+ -- Returns the value of (Expander_Active and not Alfa_Mode). This "flag"
+ -- indicates that expansion is fully active, that is, not in the reduced
+ -- mode for Alfa (True) or that expansion is either deactivated, or active
+ -- in the reduced mode for Alfa (False). For more information on full
+ -- expansion, see package Expander. For more information on reduced
+ -- Alfa expansion, see package Exp_Alfa.
+
private
-- The following type is used to save and restore settings of switches in
Assertions_Enabled : Boolean;
Assume_No_Invalid_Values : Boolean;
Check_Policy_List : Node_Id;
+ Debug_Pragmas_Disabled : Boolean;
Debug_Pragmas_Enabled : Boolean;
+ Default_Pool : Node_Id;
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;
+ Initialize_Scalars : Boolean;
+ Normalize_Scalars : Boolean;
Optimize_Alignment : Character;
Optimize_Alignment_Local : Boolean;
Persistent_BSS_Mode : Boolean;
Polling_Required : Boolean;
+ Short_Descriptors : Boolean;
Use_VADS_Size : Boolean;
end record;
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