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1 706 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                              C O M P E R R                               --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--          Copyright (C) 1992-2011, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license.          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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--  This package contains the routine called when a fatal internal compiler
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--  error is detected. Calls to this routines cause termination of the
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--  current compilation with appropriate error output.
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package Comperr is
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   procedure Compiler_Abort
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     (X            : String;
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      Code         : Integer := 0;
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      Fallback_Loc : String := "");
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   --  Signals an internal compiler error. Never returns control. Depending on
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   --  processing may end up raising Unrecoverable_Error, or exiting directly.
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   --  The message output is a "bug box" containing the first string passed as
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   --  an argument. The Sloc field of the node in Current_Error_Node is used to
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   --  provide the location where the error should be signalled. If this Sloc
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   --  value is set to No_Location or any of the other special location values,
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   --  then the Fallback_Loc argument string is used instead. The message text
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   --  includes the node id, and the code parameter if it is positive.
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   --
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   --  Note that this is only used at the outer level (to handle constraint
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   --  errors or assert errors etc.) In the normal logic of the compiler we
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   --  always use pragma Assert to check for errors, and if necessary an
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   --  explicit abort is achieved by pragma Assert (False). Code is positive
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   --  for a gigi abort (giving the gigi abort code), zero for a front
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   --  end exception (with possible message stored in TSD.Current_Excep,
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   --  and negative (an unused value) for a GCC abort.
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   procedure Delete_SCIL_Files;
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   --  Delete SCIL files associated with the main unit
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   ------------------------------
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   -- Use of gnat_bug.box File --
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   ------------------------------
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   --  When comperr generates the "bug box". The first two lines contain
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   --  information on the version number, type of abort, and source location.
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   --  Normally the remaining text is one of three possible forms
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   --  depending on Gnatvsn.Gnat_Version_Type (FSF, Public, GNATPRO).
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   --  See body of this package for the exact text used.
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   --  In addition, an alternative mechanism exists for easily substituting
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   --  different text for this message. Compiler_Abort checks for the
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   --  existence of the file "gnat_bug.box" in the current source path.
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   --  Most typically this file, if present, will be in the directory
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   --  containing the run-time sources.
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   --  If this file is present, then it is a plain ASCII file, whose contents
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   --  replace the remaining text. The lines in this file should be seventy-two
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   --  characters or less to avoid misformatting the right boundary of the box.
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   --  Note that the file does not contain the vertical bar characters or any
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   --  leading spaces in lines.
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end Comperr;

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