1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- C O M P E R R -- 6-- -- 7-- S p e c -- 8-- -- 9-- Copyright (C) 1992-2013, Free Software Foundation, Inc. -- 10-- -- 11-- GNAT is free software; you can redistribute it and/or modify it under -- 12-- terms of the GNU General Public License as published by the Free Soft- -- 13-- ware Foundation; either version 3, or (at your option) any later ver- -- 14-- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- 15-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- 16-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- 17-- for more details. You should have received a copy of the GNU General -- 18-- Public License distributed with GNAT; see file COPYING3. If not, go to -- 19-- http://www.gnu.org/licenses for a complete copy of the license. -- 20-- -- 21-- GNAT was originally developed by the GNAT team at New York University. -- 22-- Extensive contributions were provided by Ada Core Technologies Inc. -- 23-- -- 24------------------------------------------------------------------------------ 25 26-- This package contains the routine called when a fatal internal compiler 27-- error is detected. Calls to this routines cause termination of the 28-- current compilation with appropriate error output. 29 30package Comperr is 31 32 procedure Compiler_Abort 33 (X : String; 34 Code : Integer := 0; 35 Fallback_Loc : String := ""); 36 pragma No_Return (Compiler_Abort); 37 -- Signals an internal compiler error. Never returns control. Depending on 38 -- processing may end up raising Unrecoverable_Error, or exiting directly. 39 -- The message output is a "bug box" containing the first string passed as 40 -- an argument. The Sloc field of the node in Current_Error_Node is used to 41 -- provide the location where the error should be signalled. If this Sloc 42 -- value is set to No_Location or any of the other special location values, 43 -- then the Fallback_Loc argument string is used instead. The message text 44 -- includes the node id, and the code parameter if it is positive. 45 -- 46 -- Note that this is only used at the outer level (to handle constraint 47 -- errors or assert errors etc.) In the normal logic of the compiler we 48 -- always use pragma Assert to check for errors, and if necessary an 49 -- explicit abort is achieved by pragma Assert (False). Code is positive 50 -- for a gigi abort (giving the gigi abort code), zero for a front 51 -- end exception (with possible message stored in TSD.Current_Excep, 52 -- and negative (an unused value) for a GCC abort. 53 54 procedure Delete_SCIL_Files; 55 -- Delete SCIL files associated with the main unit 56 57 ------------------------------ 58 -- Use of gnat_bug.box File -- 59 ------------------------------ 60 61 -- When comperr generates the "bug box". The first two lines contain 62 -- information on the version number, type of abort, and source location. 63 64 -- Normally the remaining text is one of three possible forms 65 -- depending on Gnatvsn.Gnat_Version_Type (FSF, Public, GNATPRO). 66 -- See body of this package for the exact text used. 67 68 -- In addition, an alternative mechanism exists for easily substituting 69 -- different text for this message. Compiler_Abort checks for the 70 -- existence of the file "gnat_bug.box" in the current source path. 71 -- Most typically this file, if present, will be in the directory 72 -- containing the run-time sources. 73 74 -- If this file is present, then it is a plain ASCII file, whose contents 75 -- replace the remaining text. The lines in this file should be seventy-two 76 -- characters or less to avoid misformatting the right boundary of the box. 77 -- Note that the file does not contain the vertical bar characters or any 78 -- leading spaces in lines. 79 80end Comperr; 81