| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- C O M P E R R -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2003 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 2, 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. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING. If not, write -- |
| -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- |
| -- MA 02111-1307, USA. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package contains the routine called when a fatal internal compiler |
| -- error is detected. Calls to this routines cause termination of the |
| -- current compilation with appropriate error output. |
| |
| package Comperr is |
| |
| procedure Compiler_Abort |
| (X : String; |
| Code : Integer := 0); |
| -- Signals an internal compiler error. Never returns control. Depending |
| -- on processing may end up raising Unrecoverable_Error, or exiting |
| -- directly. The message output is a "bug box" containing the |
| -- string passed as an argument. The node in Current_Error_Node is used |
| -- to provide the location where the error should be signalled. The |
| -- message includes the node id, and the code parameter if it is positive. |
| -- Note that this is only used at the outer level (to handle constraint |
| -- errors or assert errors etc.) In the normal logic of the compiler we |
| -- always use pragma Assert to check for errors, and if necessary an |
| -- explicit abort is achieved by pragma Assert (False). Code is positive |
| -- for a gigi abort (giving the gigi abort code), zero for a front |
| -- end exception (with possible message stored in TSD.Current_Excep, |
| -- and negative (an unused value) for a GCC abort. |
| |
| ------------------------------ |
| -- Use of gnat_bug.box File -- |
| ------------------------------ |
| |
| -- When comperr generates the "bug box". The first two lines contain |
| -- information on the version number, type of abort, and source location. |
| |
| -- Normally the remaining text is one of three possible forms |
| -- depending on Gnatvsn.Gnat_Version_Type (FSF, Public, GNATPRO). |
| -- See body of this package for the exact text used. |
| |
| -- In addition, an alternative mechanism exists for easily substituting |
| -- different text for this message. Compiler_Abort checks for the |
| -- existence of the file "gnat_bug.box" in the current source path. |
| -- Most typically this file, if present, will be in the directory |
| -- containing the run-time sources. |
| |
| -- If this file is present, then it is a plain ASCII file, whose |
| -- contents replace the remaining text. The lines in this file should be |
| -- 72 characters or less to avoid misformatting the right boundary of the |
| -- box. Note that the file does not contain the vertical bar characters or |
| -- any leading spaces in lines. |
| |
| end Comperr; |
