| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- D E B U G -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2012, 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/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| package body Debug is |
| |
| --------------------------------- |
| -- Summary of Debug Flag Usage -- |
| --------------------------------- |
| |
| -- Debug flags for compiler (GNAT1) |
| |
| -- da Generate messages tracking semantic analyzer progress |
| -- db Show encoding of type names for debug output |
| -- dc List names of units as they are compiled |
| -- dd Dynamic allocation of tables messages generated |
| -- de List the entity table |
| -- df Full tree/source print (includes withed units) |
| -- dg Print source from tree (generated code only) |
| -- dh Generate listing showing loading of name table hash chains |
| -- di Generate messages for visibility linking/delinking |
| -- dj Suppress "junk null check" for access parameter values |
| -- dk Generate GNATBUG message on abort, even if previous errors |
| -- dl Generate unit load trace messages |
| -- dm Allow VMS features even if not OpenVMS version |
| -- dn Generate messages for node/list allocation |
| -- do Print source from tree (original code only) |
| -- dp Generate messages for parser scope stack push/pops |
| -- dq No auto-alignment of small records |
| -- dr Generate parser resynchronization messages |
| -- ds Print source from tree (including original and generated stuff) |
| -- dt Print full tree |
| -- du Uncheck categorization pragmas |
| -- dv Output trace of overload resolution |
| -- dw Print trace of semantic scope stack |
| -- dx Force expansion on, even if no code being generated |
| -- dy Print tree of package Standard |
| -- dz Print source of package Standard |
| |
| -- dA All entities included in representation information output |
| -- dB Output debug encoding of type names and variants |
| -- dC Output debugging information on check suppression |
| -- dD Delete elaboration checks in inner level routines |
| -- dE Apply elaboration checks to predefined units |
| -- dF Front end data layout enabled |
| -- dG Generate all warnings including those normally suppressed |
| -- dH Hold (kill) call to gigi |
| -- dI Inhibit internal name numbering in gnatG listing |
| -- dJ Output debugging trace info for JGNAT (Java VM version of GNAT) |
| -- dK Kill all error messages |
| -- dL Output trace information on elaboration checking |
| -- dM Assume all variables are modified (no current values) |
| -- dN No file name information in exception messages |
| -- dO Output immediate error messages |
| -- dP Do not check for controlled objects in preelaborable packages |
| -- dQ Do not generate runtime check for duplicated external tag |
| -- dR Bypass check for correct version of s-rpc |
| -- dS Never convert numbers to machine numbers in Sem_Eval |
| -- dT Convert to machine numbers only for constant declarations |
| -- dU Enable garbage collection of unreachable entities |
| -- dV Enable viewing of all symbols in debugger |
| -- dW Disable warnings on calls for IN OUT parameters |
| -- dX Display messages on reads of potentially uninitialized scalars |
| -- dY Enable configurable run-time mode |
| -- dZ Generate listing showing the contents of the dispatch tables |
| |
| -- d.a Force Target_Strict_Alignment mode to True |
| -- d.b Dump backend types |
| -- d.c Generate inline concatenation, do not call procedure |
| -- d.d Disable atomic synchronization |
| -- d.e Enable atomic synchronization |
| -- d.f Inhibit folding of static expressions |
| -- d.g Enable conversion of raise into goto |
| -- d.h |
| -- d.i Ignore Warnings pragmas |
| -- d.j Generate listing of frontend inlined calls |
| -- d.k Enable new support for frontend inlining |
| -- d.l Use Ada 95 semantics for limited function returns |
| -- d.m For -gnatl, print full source only for main unit |
| -- d.n Print source file names |
| -- d.o Generate .NET listing of CIL code |
| -- d.p Enable the .NET CIL verifier |
| -- d.q |
| -- d.r Enable OK_To_Reorder_Components in non-variant records |
| -- d.s Disable expansion of slice move, use memmove |
| -- d.t Disable static allocation of library level dispatch tables |
| -- d.u |
| -- d.v Enable OK_To_Reorder_Components in variant records |
| -- d.w Do not check for infinite loops |
| -- d.x No exception handlers |
| -- d.y |
| -- d.z |
| |
| -- d.A Read/write Aspect_Specifications hash table to tree |
| -- d.B |
| -- d.C Generate concatenation call, do not generate inline code |
| -- d.D Strict Alfa mode |
| -- d.E Force Alfa mode for gnat2why |
| -- d.F Alfa mode |
| -- d.G Precondition only mode for gnat2why |
| -- d.H Standard package only mode for gnat2why |
| -- d.I SCIL generation mode |
| -- d.J Disable parallel SCIL generation mode |
| -- d.K Alfa detection only mode for gnat2why |
| -- d.L Depend on back end for limited types in if and case expressions |
| -- d.M |
| -- d.N Add node to all entities |
| -- d.O Dump internal SCO tables |
| -- d.P Previous (non-optimized) handling of length comparisons |
| -- d.Q |
| -- d.R Restrictions in ali files in positional form |
| -- d.S Force Optimize_Alignment (Space) |
| -- d.T Force Optimize_Alignment (Time) |
| -- d.U Ignore indirect calls for static elaboration |
| -- d.V Extensions for formal verification |
| -- d.W Print out debugging information for Walk_Library_Items |
| -- d.X Use Expression_With_Actions |
| -- d.Y Do not use Expression_With_Actions |
| -- d.Z |
| |
| -- d1 Error msgs have node numbers where possible |
| -- d2 Eliminate error flags in verbose form error messages |
| -- d3 Dump bad node in Comperr on an abort |
| -- d4 Inhibit automatic krunch of predefined library unit files |
| -- d5 Debug output for tree read/write |
| -- d6 Default access unconstrained to thin pointers |
| -- d7 Do not output version & file time stamp in -gnatv or -gnatl mode |
| -- d8 Force opposite endianness in packed stuff |
| -- d9 Allow lock free implementation |
| |
| -- Debug flags for binder (GNATBIND) |
| |
| -- da All links (including internal units) listed if there is a cycle |
| -- db Output information from Better_Choice |
| -- dc List units as they are chosen |
| -- dd |
| -- de Elaboration dependencies including system units |
| -- df |
| -- dg |
| -- dh |
| -- di Ignore_Errors mode for reading ali files |
| -- dj |
| -- dk |
| -- dl |
| -- dm |
| -- dn List details of manipulation of Num_Pred values |
| -- do Use old preference for elaboration order |
| -- dp |
| -- dq |
| -- dr |
| -- ds |
| -- dt |
| -- du List units as they are acquired |
| -- dv |
| -- dw |
| -- dx Force binder to read xref information from ali files |
| -- dy |
| -- dz |
| |
| -- Debug flags used in package Make and its clients (e.g. GNATMAKE) |
| |
| -- da |
| -- db |
| -- dc |
| -- dd |
| -- de |
| -- df Only output file names, not path names, in log |
| -- dg |
| -- dh Generate listing showing loading of name table hash chains |
| -- di |
| -- dj |
| -- dk |
| -- dl |
| -- dm Display the number of maximum simultaneous compilations |
| -- dn Do not delete temp files created by gnatmake |
| -- do |
| -- dp Prints the contents of the Q used by Make.Compile_Sources |
| -- dq Prints source files as they are enqueued and dequeued |
| -- dr |
| -- ds |
| -- dt Display time stamps when there is a mismatch |
| -- du List units as their ali files are acquired |
| -- dv |
| -- dw Prints the list of units withed by the unit currently explored |
| -- dx |
| -- dy |
| -- dz |
| |
| -------------------------------------------- |
| -- Documentation for Compiler Debug Flags -- |
| -------------------------------------------- |
| |
| -- da Generate messages tracking semantic analyzer progress. A message |
| -- is output showing each node as it gets analyzed, expanded, |
| -- resolved, or evaluated. This option is useful for finding out |
| -- exactly where a bomb during semantic analysis is occurring. |
| |
| -- db In Exp_Dbug, certain type names are encoded to include debugging |
| -- information. This debug switch causes lines to be output showing |
| -- the encodings used. |
| |
| -- dc List names of units as they are compiled. One line of output will |
| -- be generated at the start of compiling each unit (package or |
| -- subprogram). |
| |
| -- dd Dynamic allocation of tables messages generated. Each time a |
| -- table is reallocated, a line is output indicating the expansion. |
| |
| -- de List the entity table |
| |
| -- df Full tree/source print (includes withed units). Normally the tree |
| -- output (dt) or recreated source output (dg,do,ds) includes only |
| -- the main unit. If df is set, then the output in either case |
| -- includes all compiled units (see also dg,do,ds,dt). Note that to |
| -- be effective, this swich must be used in combination with one or |
| -- more of dt, dg, do or ds. |
| |
| -- dg Print the source recreated from the generated tree. In the case |
| -- where the tree has been rewritten this output includes only the |
| -- generated code, not the original code (see also df,do,ds,dz). |
| -- This flag differs from -gnatG in that the output also includes |
| -- non-source generated null statements, and freeze nodes, which |
| -- are normally omitted in -gnatG mode. |
| |
| -- dh Generates a table at the end of a compilation showing how the hash |
| -- table chains built by the Namet package are loaded. This is useful |
| -- in ensuring that the hashing algorithm (in Namet.Hash) is working |
| -- effectively with typical sets of program identifiers. |
| |
| -- di Generate messages for visibility linking/delinking |
| |
| -- dj Suppress "junk null check" for access parameters. This flag permits |
| -- Ada programs to pass null parameters to access parameters, and to |
| -- explicitly check such access values against the null literal. |
| -- Neither of these is valid Ada, but both were allowed in versions of |
| -- GNAT before 3.10, so this switch can ease the transition process. |
| |
| -- dk Immediate kill on abort. Normally on an abort (i.e. a call to |
| -- Comperr.Compiler_Abort), the GNATBUG message is not given if |
| -- there is a previous error. This debug switch bypasses this test |
| -- and gives the message unconditionally (useful for debugging). |
| |
| -- dl Generate unit load trace messages. A line of traceback output is |
| -- generated each time a request is made to the library manager to |
| -- load a new unit. |
| |
| -- dm Some features are permitted only in OpenVMS ports of GNAT (e.g. |
| -- the specification of passing by descriptor). Normally any use |
| -- of these features will be flagged as an error, but this debug |
| -- flag allows acceptance of these features in non OpenVMS ports. |
| -- Of course they may not have any useful effect, and in particular |
| -- attempting to generate code with this flag set may blow up. |
| -- The flag also forces the use of 64-bits for Long_Integer. |
| |
| -- dn Generate messages for node/list allocation. Each time a node or |
| -- list header is allocated, a line of output is generated. Certain |
| -- other basic tree operations also cause a line of output to be |
| -- generated. This option is useful in seeing where the parser is |
| -- blowing up. |
| |
| -- do Print the source recreated from the generated tree. In the case |
| -- where the tree has been rewritten, this output includes only the |
| -- original code, not the generated code (see also df,dg,ds,dz). |
| |
| -- dp Generate messages for parser scope stack push/pops. A line of |
| -- output by the parser each time the parser scope stack is either |
| -- pushed or popped. Useful in debugging situations where the |
| -- parser scope stack ends up incorrectly synchronized |
| |
| -- dq In layout version 1.38, 2002/01/12, a circuit was implemented |
| -- to give decent default alignment to short records that had no |
| -- specific alignment set. This debug option restores the previous |
| -- behavior of giving such records poor alignments, typically 1. |
| -- This may be useful in dealing with transition. |
| |
| -- dr Generate parser resynchronization messages. Normally the parser |
| -- resynchronizes quietly. With this debug option, two messages |
| -- are generated, one when the parser starts a resynchronization |
| -- skip, and another when it resumes parsing. Useful in debugging |
| -- inadequate error recovery situations. |
| |
| -- ds Print the source recreated from the generated tree. In the case |
| -- where the tree has been rewritten this output includes both the |
| -- generated code and the original code with the generated code |
| -- being enlosed in curly brackets (see also df,do,ds,dz) |
| |
| -- dt Print full tree. The generated tree is output (see also df,dy) |
| |
| -- du Uncheck categorization pragmas. This debug switch causes the |
| -- categorization pragmas (Pure, Preelaborate etc) to be ignored |
| -- so that normal checks are not made (this is particularly useful |
| -- for adding temporary debugging code to units that have pragmas |
| -- that are inconsistent with the debugging code added. |
| |
| -- dv Output trace of overload resolution. Outputs messages for |
| -- overload attempts that involve cascaded errors, or where |
| -- an interepretation is incompatible with the context. |
| |
| -- dw Write semantic scope stack messages. Each time a scope is created |
| -- or removed, a message is output (see the Sem_Ch8.Push_Scope and |
| -- Sem_Ch8.Pop_Scope subprograms). |
| |
| -- dx Force expansion on, even if no code being generated. Normally the |
| -- expander is inhibited if no code is generated. This switch forces |
| -- expansion to proceed normally even if the backend is not being |
| -- called. This is particularly useful for debugging purposes when |
| -- using the front-end only version of the compiler (which normally |
| -- would never do any expansion). |
| |
| -- dy Print tree of package Standard. Normally the tree print out does |
| -- not include package Standard, even if the -df switch is set. This |
| -- switch forces output of the internal tree built for Standard. |
| |
| -- dz Print source of package Standard. Normally the source print out |
| -- does not include package Standard, even if the -df switch is set. |
| -- This switch forces output of the source recreated from the internal |
| -- tree built for Standard. Note that this differs from -gnatS in |
| -- that it prints from the actual tree using the normal Sprint |
| -- circuitry for printing trees. |
| |
| -- dA Forces output of representation information, including full |
| -- information for all internal type and object entities, as well |
| -- as all user defined type and object entities including private |
| -- and incomplete types. This debug switch also automatically sets |
| -- the equivalent of -gnatR3m. |
| |
| -- dB Output debug encodings for types and variants. See Exp_Dbug for |
| -- exact form of the generated output. |
| |
| -- dC Output trace information showing the decisions made during |
| -- check suppression activity in unit Checks. |
| |
| -- dD Delete new elaboration checks. This flag causes GNAT to return |
| -- to the 3.13a elaboration semantics, and to suppress the fixing |
| -- of two bugs. The first is in the context of inner routines in |
| -- dynamic elaboration mode, when the subprogram we are in was |
| -- called at elaboration time by a unit that was also compiled with |
| -- dynamic elaboration checks. In this case, if A calls B calls C, |
| -- and all are in different units, we need an elaboration check at |
| -- each call. These nested checks were only put in recently (see |
| -- version 1.80 of Sem_Elab) and we provide this debug flag to |
| -- revert to the previous behavior in case of regressions. The |
| -- other behavior reverted by this flag is the treatment of the |
| -- Elaborate_Body pragma in static elaboration mode. This used to |
| -- be treated as not needing elaboration checking, but in fact in |
| -- general Elaborate_All is still required because of nested calls. |
| |
| -- dE Apply compile time elaboration checking for with relations between |
| -- predefined units. Normally no checks are made (it seems that at |
| -- least on the SGI, such checks run into trouble). |
| |
| -- dF Front end data layout enabled. Normally front end data layout |
| -- is only enabled if the target parameter Backend_Layout is False. |
| -- This debugging switch enables it unconditionally. |
| |
| -- dG Generate all warnings. Normally Errout suppresses warnings on |
| -- units that are not part of the main extended source, and also |
| -- suppresses warnings on instantiations in the main extended |
| -- source that duplicate warnings already posted on the template. |
| -- This switch stops both kinds of deletion and causes Errout to |
| -- post all warnings sent to it. |
| |
| -- dH Inhibit call to gigi. This is useful for testing front end data |
| -- layout, and may be useful in other debugging situations where |
| -- you do not want gigi to intefere with the testing. |
| |
| -- dI Inhibit internal name numbering in gnatDG listing. Any sequence of |
| -- the form <uppercase-letter><digits><lowercase-letter> appearing in |
| -- a name is replaced by <uppercase-letter>...<lowercase-letter>. This |
| -- is used in the fixed bugs run to minimize system and version |
| -- dependency in filed -gnatD or -gnatG output. |
| |
| -- dJ Generate debugging trace output for the JGNAT back end. This |
| -- consists of symbolic Java Byte Code sequences for all generated |
| -- classes plus additional information to indicate local variables |
| -- and methods. |
| |
| -- dK Kill all error messages. This debug flag suppresses the output |
| -- of all error messages. It is used in regression tests where the |
| -- error messages are target dependent and irrelevant. |
| |
| -- dL Output trace information on elaboration checking. This debug |
| -- switch causes output to be generated showing each call or |
| -- instantiation as it is checked, and the progress of the recursive |
| -- trace through calls at elaboration time. |
| |
| -- dM Assume all variables have been modified, and ignore current value |
| -- indications. This debug flag disconnects the tracking of constant |
| -- values (see Exp_Ch2.Expand_Current_Value). |
| |
| -- dN Do not generate file name information in exception messages |
| |
| -- dO Output immediate error messages. This causes error messages to |
| -- be output as soon as they are generated (disconnecting several |
| -- circuits for improvement of messages, deletion of duplicate |
| -- messages etc). Useful to diagnose compiler bombs caused by |
| -- erroneous handling of error situations |
| |
| -- dP Do not check for controlled objects in preelaborable packages. |
| -- RM 10.2.1(9) forbids the use of library level controlled objects |
| -- in preelaborable packages, but this restriction is a huge pain, |
| -- especially in the predefined library units. |
| |
| -- dQ Eliminate check for duplicate external tags. This check was added |
| -- as per AI 0113, and causes some backward compatibility problems. |
| -- It is never legitimate to have duplicate external tags, so the |
| -- check is certainly valid, but this debug switch can be useful for |
| -- enabling previous behavior of ignoring this problem. |
| |
| -- dR Bypass the check for a proper version of s-rpc being present |
| -- to use the -gnatz? switch. This allows debugging of the use |
| -- of stubs generation without needing to have GLADE (or some |
| -- other PCS installed). |
| |
| -- dS Omit conversion of fpt numbers to exact machine numbers in |
| -- non-static evaluation contexts (see Check_Non_Static_Context). |
| -- This is intended for testing out timing problems with this |
| -- conversion circuit. |
| |
| -- dT Similar to dS, but omits the conversions only in the case where |
| -- the parent is not a constant declaration. |
| |
| -- dU Enable garbage collection of unreachable entities. This enables |
| -- both the reachability analysis and changing the Is_Public and |
| -- Is_Eliminated flags. |
| |
| -- dV Enable viewing of all symbols in debugger. Causes debug information |
| -- to be generated for all symbols, including internal symbols. This |
| -- is enabled by default for -gnatD, but this switch allows this to |
| -- be enabled without generating modified source files. Note that the |
| -- use of -gnatdV ensures in the dwarf/elf case that all symbols that |
| -- are present in the elf tables are also in the dwarf tables (which |
| -- seems to be required by some tools). Another effect of dV is to |
| -- generate full qualified names, including internal names generated |
| -- for blocks and loops. |
| |
| -- dW Disable warnings when a possibly uninitialized scalar value is |
| -- passed to an IN OUT parameter of a procedure. This usage is a |
| -- quite improper bounded error [erroneous in Ada 83] situation, |
| -- and would normally generate a warning. However, to ease the |
| -- task of transitioning incorrect legacy code, we provide this |
| -- undocumented feature for suppressing these warnings. |
| |
| -- dY Enable configurable run-time mode, just as though the System file |
| -- had Configurable_Run_Time_Mode set to True. This is useful in |
| -- testing high integrity mode. |
| |
| -- dZ Generate listing showing the contents of the dispatch tables. Each |
| -- line has an internally generated number used for references between |
| -- tagged types and primitives. For each primitive the output has the |
| -- following fields: |
| -- |
| -- - Letter 'P' or letter 's': The former indicates that this |
| -- primitive will be located in a primary dispatch table. The |
| -- latter indicates that it will be located in a secondary |
| -- dispatch table. |
| -- |
| -- - Name of the primitive. In case of predefined Ada primitives |
| -- the text "(predefined)" is added before the name, and these |
| -- acronyms are used: SR (Stream_Read), SW (Stream_Write), SI |
| -- (Stream_Input), SO (Stream_Output), DA (Deep_Adjust), DF |
| -- (Deep_Finalize). In addition Oeq identifies the equality |
| -- operator, and "_assign" the assignment. |
| -- |
| -- - If the primitive covers interface types, two extra fields |
| -- referencing other primitives are generated: "Alias" references |
| -- the primitive of the tagged type that covers an interface |
| -- primitive, and "AI_Alias" references the covered interface |
| -- primitive. |
| -- |
| -- - The expression "at #xx" indicates the slot of the dispatch |
| -- table occupied by such primitive in its corresponding primary |
| -- or secondary dispatch table. |
| -- |
| -- - In case of abstract subprograms the text "is abstract" is |
| -- added at the end of the line. |
| |
| -- d.a Force Target_Strict_Alignment to True, even on targets where it |
| -- would normally be false. Can be used for testing strict alignment |
| -- circuitry in the compiler. |
| |
| -- d.b Dump back end types. During Create_Standard, the back end is |
| -- queried for all available types. This option shows them. |
| |
| -- d.c Generate inline concatenation, instead of calling one of the |
| -- System.Concat_n.Str_Concat_n routines in cases where the latter |
| -- routines would normally be called. |
| |
| -- d.d Disable atomic synchronization for all atomic variable references. |
| -- Pragma Enable_Atomic_Synchronization is ignored. |
| |
| -- d.e Enable atomic synchronization for all atomic variable references. |
| -- Pragma Disable_Atomic_Synchronization is ignored, and also the |
| -- compiler switch -gnated is ignored. |
| |
| -- d.f Suppress folding of static expressions. This of course results |
| -- in seriously non-conforming behavior, but is useful sometimes |
| -- when tracking down handling of complex expressions. |
| |
| -- d.g Enables conversion of a raise statement into a goto when the |
| -- relevant handler is statically determinable. For now we only try |
| -- this if this debug flag is set. Later we will enable this more |
| -- generally by default. |
| |
| -- d.i Ignore all occurrences of pragma Warnings in the sources. This can |
| -- be used in particular to disable Warnings (Off) to check if any of |
| -- these statements are inappropriate. |
| |
| -- d.j Generate listing of frontend inlined calls and inline calls passed |
| -- to the backend. This is useful to locate skipped calls that must be |
| -- inlined by the frontend. |
| |
| -- d.k Enable new semantics of frontend inlining. This is useful to test |
| -- this new feature in all the platforms. |
| |
| -- d.l Use Ada 95 semantics for limited function returns. This may be |
| -- used to work around the incompatibility introduced by AI-318-2. |
| -- It is useful only in -gnat05 mode. |
| |
| -- d.m When -gnatl is used, the normal output includes full listings of |
| -- all files in the extended main source (body/spec/subunits). If this |
| -- debug switch is used, then the full listing is given only for the |
| -- main source (this corresponds to a previous behavior of -gnatl and |
| -- is used for running the ACATS tests). |
| |
| -- d.n Print source file names as they are loaded. This is useful if the |
| -- compiler has a bug -- these are the files that need to be included |
| -- in a bug report. |
| |
| -- d.o Generate listing showing the IL instructions generated by the .NET |
| -- compiler for each subprogram. |
| |
| -- d.p Enable the .NET CIL verifier. During development the verifier is |
| -- disabled by default and this flag is used to enable it. In the |
| -- future we will reverse this functionality. |
| |
| -- d.r Forces the flag OK_To_Reorder_Components to be set in all record |
| -- base types that have no discriminants. |
| |
| -- d.s Normally the compiler expands slice moves into loops if overlap |
| -- might be possible. This debug flag inhibits that expansion, and |
| -- the back end is expected to use an appropriate routine to handle |
| -- overlap, based on Forward_OK and Backwards_OK flags. |
| |
| -- d.t The compiler has been modified (a fairly extensive modification) |
| -- to generate static dispatch tables for library level tagged types. |
| -- This debug switch disables this modification and reverts to the |
| -- previous dynamic construction of tables. It is there as a possible |
| -- work around if we run into trouble with the new implementation. |
| |
| -- d.v Forces the flag OK_To_Reorder_Components to be set in all record |
| -- base types that have at least one discriminant (v = variant). |
| |
| -- d.w This flag turns off the scanning of loops to detect possible |
| -- infinite loops. |
| |
| -- d.A There seems to be a problem with ASIS if we activate the circuit |
| -- for reading and writing the aspect specification hash table, so |
| -- for now, this is controlled by the debug flag d.A. The hash table |
| -- is only written and read if this flag is set. |
| |
| -- d.x No exception handlers in generated code. This causes exception |
| -- handlers to be eliminated from the generated code. They are still |
| -- fully compiled and analyzed, they just get eliminated from the |
| -- code generation step. |
| |
| -- d.C Generate call to System.Concat_n.Str_Concat_n routines in cases |
| -- where we would normally generate inline concatenation code. |
| |
| -- d.D Strict Alfa mode. Interpret compiler permissions as strictly as |
| -- possible in Alfa mode. |
| |
| -- d.E Force Alfa mode for gnat2why. In this mode, errors are issued for |
| -- all violations of Alfa in user code, and warnings are issued for |
| -- constructs not yet implemented in gnat2why. |
| |
| -- d.F Alfa mode. Generate AST in a form suitable for formal verification, |
| -- as well as additional cross reference information in ALI files to |
| -- compute effects of subprograms. |
| |
| -- d.G Precondition only mode for gnat2why. In this mode, gnat2why will |
| -- only generate Why code that checks for the well-guardedness of |
| -- preconditions. |
| |
| -- d.H Standard package only mode for gnat2why. In this mode, gnat2why |
| -- will only generate Why code for package Standard. Any given input |
| -- file will be ignored. |
| |
| -- d.I Generate SCIL mode. Generate intermediate code for the sake of |
| -- of static analysis tools, and ensure additional tree consistency |
| -- between different compilations of specs. |
| |
| -- d.J Disable parallel SCIL generation. Normally SCIL file generation is |
| -- done in parallel to speed processing. This switch disables this |
| -- behavior. |
| |
| -- d.K Alfa detection only mode for gnat2why. In this mode, gnat2why |
| -- will only generate the .alfa file, but no Why code. |
| |
| -- d.L Normally the front end generates special expansion for conditional |
| -- expressions of a limited type. This debug flag removes this special |
| -- case expansion, leaving it up to the back end to handle conditional |
| -- expressions correctly. |
| |
| -- d.N Enlarge entities by one node (but don't attempt to use this extra |
| -- node for storage of any flags or fields). This can be used to do |
| -- experiments on the impact of increasing entity sizes. |
| |
| -- d.O Dump internal SCO tables. Before outputting the SCO information to |
| -- the ALI file, the internal SCO tables (SCO_Table/SCO_Unit_Table) |
| -- are dumped for debugging purposes. |
| |
| -- d.P Previous non-optimized handling of length comparisons. Setting this |
| -- flag inhibits the effect of Optimize_Length_Comparison in Exp_Ch4. |
| -- This is there in case we find a situation where the optimization |
| -- malfunctions, to provide a work around. |
| |
| -- d.R As documented in lib-writ.ads, restrictions in the ali file can |
| -- have two forms, positional and named. The named notation is the |
| -- current preferred form, but the use of this debug switch will force |
| -- the use of the obsolescent positional form. |
| |
| -- d.S Force Optimize_Alignment (Space) mode as the default |
| |
| -- d.T Force Optimize_Alignment (Time) mode as the default |
| |
| -- d.U Ignore indirect calls for static elaboration. The static |
| -- elaboration model is conservative, especially regarding indirect |
| -- calls. If you say Proc'Access, it will assume you might call |
| -- Proc. This can cause elaboration cycles at bind time. This flag |
| -- reverts to the behavior of earlier compilers, which ignored |
| -- indirect calls. |
| |
| -- d.V Extensions for formal verification. New attributes/aspects/pragmas |
| -- defined in GNAT for formal verification with the tool GNATprove are |
| -- only accepted under this switch. |
| |
| -- d.W Print out debugging information for Walk_Library_Items, including |
| -- the order in which units are walked. This is primarily for use in |
| -- debugging CodePeer mode. |
| |
| -- d.X By default, the compiler uses an elaborate rewriting framework for |
| -- short-circuited forms where the right hand condition generates |
| -- actions to be inserted. With the gcc backend, we now use the new |
| -- N_Expression_With_Actions node for this expansion, but we still use |
| -- the old method for other backends and in SCIL mode. This debug flag |
| -- forces use of the new N_Expression_With_Actions node in these other |
| -- cases and is intended for transitional use. |
| |
| -- d.Y Prevents the use of the N_Expression_With_Actions node even in the |
| -- case of the gcc back end. Provided as a back up in case the new |
| -- scheme has problems. |
| |
| -- d1 Error messages have node numbers where possible. Normally error |
| -- messages have only source locations. This option is useful when |
| -- debugging errors caused by expanded code, where the source location |
| -- does not give enough information. |
| |
| -- d2 Suppress output of the error position flags for verbose form error |
| -- messages. The messages are still interspersed in the listing, but |
| -- without any error flags or extra blank lines. Also causes an extra |
| -- <<< to be output at the right margin. This is intended to be the |
| -- easiest format for checking conformance of ACATS B tests. This |
| -- flag also suppresses the additional messages explaining why a |
| -- non-static expression is non-static (see Sem_Eval.Why_Not_Static). |
| -- This avoids having to worry about these messages in ACATS testing. |
| |
| -- d3 Causes Comperr to dump the contents of the node for which an abort |
| -- was detected (normally only the Node_Id of the node is output). |
| |
| -- d4 Inhibits automatic krunching of predefined library unit file names. |
| -- Normally, as described in the spec of package Krunch, such files |
| -- are automatically krunched to 8 characters, with special treatment |
| -- of the prefixes Ada, System, and Interfaces. Setting this debug |
| -- switch disables this special treatment. |
| |
| -- d5 Causes the tree read/write circuit to output detailed information |
| -- tracking the data that is read and written element by element. |
| |
| -- d6 Normally access-to-unconstrained-array types are represented |
| -- using fat (double) pointers. Using this debug flag causes them |
| -- to default to thin. This can be used to test the performance |
| -- implications of using thin pointers, and also to test that the |
| -- compiler functions correctly with this choice. |
| |
| -- d7 Normally a -gnatl or -gnatv listing includes the time stamp |
| -- of the source file. This debug flag suppresses this output, |
| -- and also suppresses the message with the version number. |
| -- This is useful in certain regression tests. |
| |
| -- d8 This forces the packed stuff to generate code assuming the |
| -- opposite endianness from the actual correct value. Useful in |
| -- testing out code generation from the packed routines. |
| |
| -- d9 This allows lock free implementation for protected objects |
| -- (see Exp_Ch9). |
| |
| ------------------------------------------ |
| -- Documentation for Binder Debug Flags -- |
| ------------------------------------------ |
| |
| -- da Normally if there is an elaboration circularity, then in describing |
| -- the cycle, links involving internal units are omitted, since they |
| -- are irrelevant and confusing. This debug flag causes all links to |
| -- be listed, and is useful when diagnosing circularities introduced |
| -- by incorrect changes to the run-time library itself. |
| |
| -- db Output debug information from Better_Choice in Binde, which uses |
| -- various heuristics to determine elaboration order in cases where |
| -- multiple orders are valid. |
| |
| -- dc List units as they are chosen. As units are selected for addition to |
| -- the elaboration order, a line of output is generated showing which |
| -- unit has been selected. |
| |
| -- de Similar to the effect of -e (output complete list of elaboration |
| -- dependencies) except that internal units are included in the |
| -- listing. |
| |
| -- di Normally gnatbind calls Read_Ali with Ignore_Errors set to |
| -- False, since the binder really needs correct version ALI |
| -- files to do its job. This debug flag causes Ignore_Errors |
| -- mode to be set for the binder (and is particularly useful |
| -- for testing ignore errors mode). |
| |
| -- dn List details of manipulation of Num_Pred values during execution of |
| -- the algorithm used to determine a correct order of elaboration. This |
| -- is useful in diagnosing any problems in its behavior. |
| |
| -- do Use old elaboration order preference. The new preference rules |
| -- prefer specs with no bodies to specs with bodies, and between two |
| -- specs with bodies, prefers the one whose body is closer to being |
| -- able to be elaborated. This is a clear improvement, but we provide |
| -- this debug flag in case of regressions. |
| |
| -- du List unit name and file name for each unit as it is read in |
| |
| -- dx Force the binder to read (and then ignore) the xref information |
| -- in ali files (used to check that read circuit is working OK). |
| |
| -------------------------------------------- |
| -- Documentation for gnatmake Debug Flags -- |
| -------------------------------------------- |
| |
| -- df Only output file names, not path names, in log |
| |
| -- dh Generate listing showing loading of name table hash chains, |
| -- same as for the compiler. |
| |
| -- dm Issue a message indicating the maximum number of simultaneous |
| -- compilations. |
| |
| -- dn Do not delete temporary files created by gnatmake at the end |
| -- of execution, such as temporary config pragma files, mapping |
| -- files or project path files. |
| |
| -- dp Prints the Q used by routine Make.Compile_Sources every time |
| -- we go around the main compile loop of Make.Compile_Sources |
| |
| -- dq Prints source files as they are enqueued and dequeued in the Q |
| -- used by routine Make.Compile_Sources. Useful to figure out the |
| -- order in which sources are recompiled. |
| |
| -- dt When a time stamp mismatch has been found for an ALI file, |
| -- display the source file name, the time stamp expected and |
| -- the time stamp found. |
| |
| -- du List unit name and file name for each unit as it is read in |
| |
| -- dw Prints the list of units withed by the unit currently explored |
| -- during the main loop of Make.Compile_Sources. |
| |
| --------------------------------------------- |
| -- Documentation for gprbuild Debug Flags -- |
| --------------------------------------------- |
| |
| -- dn Do not delete temporary files createed by gprbuild at the end |
| -- of execution, such as temporary config pragma files, mapping |
| -- files or project path files. |
| |
| -- dt When a time stamp mismatch has been found for an ALI file, |
| -- display the source file name, the time stamp expected and |
| -- the time stamp found. |
| |
| -------------------- |
| -- Set_Debug_Flag -- |
| -------------------- |
| |
| procedure Set_Debug_Flag (C : Character; Val : Boolean := True) is |
| subtype Dig is Character range '1' .. '9'; |
| subtype LLet is Character range 'a' .. 'z'; |
| subtype ULet is Character range 'A' .. 'Z'; |
| |
| begin |
| if C in Dig then |
| case Dig (C) is |
| when '1' => Debug_Flag_1 := Val; |
| when '2' => Debug_Flag_2 := Val; |
| when '3' => Debug_Flag_3 := Val; |
| when '4' => Debug_Flag_4 := Val; |
| when '5' => Debug_Flag_5 := Val; |
| when '6' => Debug_Flag_6 := Val; |
| when '7' => Debug_Flag_7 := Val; |
| when '8' => Debug_Flag_8 := Val; |
| when '9' => Debug_Flag_9 := Val; |
| end case; |
| |
| elsif C in ULet then |
| case ULet (C) is |
| when 'A' => Debug_Flag_AA := Val; |
| when 'B' => Debug_Flag_BB := Val; |
| when 'C' => Debug_Flag_CC := Val; |
| when 'D' => Debug_Flag_DD := Val; |
| when 'E' => Debug_Flag_EE := Val; |
| when 'F' => Debug_Flag_FF := Val; |
| when 'G' => Debug_Flag_GG := Val; |
| when 'H' => Debug_Flag_HH := Val; |
| when 'I' => Debug_Flag_II := Val; |
| when 'J' => Debug_Flag_JJ := Val; |
| when 'K' => Debug_Flag_KK := Val; |
| when 'L' => Debug_Flag_LL := Val; |
| when 'M' => Debug_Flag_MM := Val; |
| when 'N' => Debug_Flag_NN := Val; |
| when 'O' => Debug_Flag_OO := Val; |
| when 'P' => Debug_Flag_PP := Val; |
| when 'Q' => Debug_Flag_QQ := Val; |
| when 'R' => Debug_Flag_RR := Val; |
| when 'S' => Debug_Flag_SS := Val; |
| when 'T' => Debug_Flag_TT := Val; |
| when 'U' => Debug_Flag_UU := Val; |
| when 'V' => Debug_Flag_VV := Val; |
| when 'W' => Debug_Flag_WW := Val; |
| when 'X' => Debug_Flag_XX := Val; |
| when 'Y' => Debug_Flag_YY := Val; |
| when 'Z' => Debug_Flag_ZZ := Val; |
| end case; |
| |
| else |
| case LLet (C) is |
| when 'a' => Debug_Flag_A := Val; |
| when 'b' => Debug_Flag_B := Val; |
| when 'c' => Debug_Flag_C := Val; |
| when 'd' => Debug_Flag_D := Val; |
| when 'e' => Debug_Flag_E := Val; |
| when 'f' => Debug_Flag_F := Val; |
| when 'g' => Debug_Flag_G := Val; |
| when 'h' => Debug_Flag_H := Val; |
| when 'i' => Debug_Flag_I := Val; |
| when 'j' => Debug_Flag_J := Val; |
| when 'k' => Debug_Flag_K := Val; |
| when 'l' => Debug_Flag_L := Val; |
| when 'm' => Debug_Flag_M := Val; |
| when 'n' => Debug_Flag_N := Val; |
| when 'o' => Debug_Flag_O := Val; |
| when 'p' => Debug_Flag_P := Val; |
| when 'q' => Debug_Flag_Q := Val; |
| when 'r' => Debug_Flag_R := Val; |
| when 's' => Debug_Flag_S := Val; |
| when 't' => Debug_Flag_T := Val; |
| when 'u' => Debug_Flag_U := Val; |
| when 'v' => Debug_Flag_V := Val; |
| when 'w' => Debug_Flag_W := Val; |
| when 'x' => Debug_Flag_X := Val; |
| when 'y' => Debug_Flag_Y := Val; |
| when 'z' => Debug_Flag_Z := Val; |
| end case; |
| end if; |
| end Set_Debug_Flag; |
| |
| --------------------------- |
| -- Set_Dotted_Debug_Flag -- |
| --------------------------- |
| |
| procedure Set_Dotted_Debug_Flag (C : Character; Val : Boolean := True) is |
| subtype Dig is Character range '1' .. '9'; |
| subtype LLet is Character range 'a' .. 'z'; |
| subtype ULet is Character range 'A' .. 'Z'; |
| |
| begin |
| if C in Dig then |
| case Dig (C) is |
| when '1' => Debug_Flag_Dot_1 := Val; |
| when '2' => Debug_Flag_Dot_2 := Val; |
| when '3' => Debug_Flag_Dot_3 := Val; |
| when '4' => Debug_Flag_Dot_4 := Val; |
| when '5' => Debug_Flag_Dot_5 := Val; |
| when '6' => Debug_Flag_Dot_6 := Val; |
| when '7' => Debug_Flag_Dot_7 := Val; |
| when '8' => Debug_Flag_Dot_8 := Val; |
| when '9' => Debug_Flag_Dot_9 := Val; |
| end case; |
| |
| elsif C in ULet then |
| case ULet (C) is |
| when 'A' => Debug_Flag_Dot_AA := Val; |
| when 'B' => Debug_Flag_Dot_BB := Val; |
| when 'C' => Debug_Flag_Dot_CC := Val; |
| when 'D' => Debug_Flag_Dot_DD := Val; |
| when 'E' => Debug_Flag_Dot_EE := Val; |
| when 'F' => Debug_Flag_Dot_FF := Val; |
| when 'G' => Debug_Flag_Dot_GG := Val; |
| when 'H' => Debug_Flag_Dot_HH := Val; |
| when 'I' => Debug_Flag_Dot_II := Val; |
| when 'J' => Debug_Flag_Dot_JJ := Val; |
| when 'K' => Debug_Flag_Dot_KK := Val; |
| when 'L' => Debug_Flag_Dot_LL := Val; |
| when 'M' => Debug_Flag_Dot_MM := Val; |
| when 'N' => Debug_Flag_Dot_NN := Val; |
| when 'O' => Debug_Flag_Dot_OO := Val; |
| when 'P' => Debug_Flag_Dot_PP := Val; |
| when 'Q' => Debug_Flag_Dot_QQ := Val; |
| when 'R' => Debug_Flag_Dot_RR := Val; |
| when 'S' => Debug_Flag_Dot_SS := Val; |
| when 'T' => Debug_Flag_Dot_TT := Val; |
| when 'U' => Debug_Flag_Dot_UU := Val; |
| when 'V' => Debug_Flag_Dot_VV := Val; |
| when 'W' => Debug_Flag_Dot_WW := Val; |
| when 'X' => Debug_Flag_Dot_XX := Val; |
| when 'Y' => Debug_Flag_Dot_YY := Val; |
| when 'Z' => Debug_Flag_Dot_ZZ := Val; |
| end case; |
| |
| else |
| case LLet (C) is |
| when 'a' => Debug_Flag_Dot_A := Val; |
| when 'b' => Debug_Flag_Dot_B := Val; |
| when 'c' => Debug_Flag_Dot_C := Val; |
| when 'd' => Debug_Flag_Dot_D := Val; |
| when 'e' => Debug_Flag_Dot_E := Val; |
| when 'f' => Debug_Flag_Dot_F := Val; |
| when 'g' => Debug_Flag_Dot_G := Val; |
| when 'h' => Debug_Flag_Dot_H := Val; |
| when 'i' => Debug_Flag_Dot_I := Val; |
| when 'j' => Debug_Flag_Dot_J := Val; |
| when 'k' => Debug_Flag_Dot_K := Val; |
| when 'l' => Debug_Flag_Dot_L := Val; |
| when 'm' => Debug_Flag_Dot_M := Val; |
| when 'n' => Debug_Flag_Dot_N := Val; |
| when 'o' => Debug_Flag_Dot_O := Val; |
| when 'p' => Debug_Flag_Dot_P := Val; |
| when 'q' => Debug_Flag_Dot_Q := Val; |
| when 'r' => Debug_Flag_Dot_R := Val; |
| when 's' => Debug_Flag_Dot_S := Val; |
| when 't' => Debug_Flag_Dot_T := Val; |
| when 'u' => Debug_Flag_Dot_U := Val; |
| when 'v' => Debug_Flag_Dot_V := Val; |
| when 'w' => Debug_Flag_Dot_W := Val; |
| when 'x' => Debug_Flag_Dot_X := Val; |
| when 'y' => Debug_Flag_Dot_Y := Val; |
| when 'z' => Debug_Flag_Dot_Z := Val; |
| end case; |
| end if; |
| end Set_Dotted_Debug_Flag; |
| |
| end Debug; |
