77 lines
4.4 KiB
Ada
77 lines
4.4 KiB
Ada
------------------------------------------------------------------------------
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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) 1992-2007, 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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------------------------------
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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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