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/* Basic error reporting routines.

   Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2007

   Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under

the terms of the GNU General Public License as published by the Free

Software Foundation; either version 3, or (at your option) any later

version.

GCC is distributed in the hope that it will be useful, but WITHOUT 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

along with GCC; see the file COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

/* warning, error, and fatal.  These definitions are suitable for use

   in the generator programs; the compiler has a more elaborate suite

   of diagnostic printers, found in diagnostic.c.  */

#ifdef GENERATOR_FILE

#include "bconfig.h"

#else

#include "config.h"

#endif

#include "system.h"

#include "errors.h"

/* Set this to argv[0] at the beginning of main.  */

const char *progname;

/* Starts out 0, set to 1 if error is called.  */

int have_error = 0;

/* Print a warning message - output produced, but there may be problems.  */

void

warning (int opt ATTRIBUTE_UNUSED, const char *format, ...)

{

  va_list ap;

  va_start (ap, format);

  fprintf (stderr, "%s: warning: ", progname);

  vfprintf (stderr, format, ap);

  va_end (ap);

  fputc('\n', stderr);

}

/* Print an error message - we keep going but the output is unusable.  */

void

error (const char *format, ...)

{

  va_list ap;

  va_start (ap, format);

  fprintf (stderr, "%s: ", progname);

  vfprintf (stderr, format, ap);

  va_end (ap);

  fputc('\n', stderr);

  have_error = 1;

}

/* Fatal error - terminate execution immediately.  Does not return.  */

void

fatal (const char *format, ...)

{

  va_list ap;

  va_start (ap, format);

  fprintf (stderr, "%s: ", progname);

  vfprintf (stderr, format, ap);

  va_end (ap);

  fputc('\n', stderr);

  exit (FATAL_EXIT_CODE);

}

/* Similar, but say we got an internal error.  */

void

internal_error (const char *format, ...)

{

  va_list ap;

  va_start (ap, format);

  fprintf (stderr, "%s: Internal error: ", progname);

  vfprintf (stderr, format, ap);

  va_end (ap);

  fputc ('\n', stderr);

  exit (FATAL_EXIT_CODE);

}

/* Given a partial pathname as input, return another pathname that

   shares no directory elements with the pathname of __FILE__.  This

   is used by fancy_abort() to print `Internal compiler error in expr.c'

   instead of `Internal compiler error in ../../GCC/gcc/expr.c'.  This

   version if for the gen* programs and so needn't handle subdirectories.  */

const char *

trim_filename (const char *name)

{

  static const char this_file[] = __FILE__;

  const char *p = name, *q = this_file;

  /* Skip any parts the two filenames have in common.  */

  while (*p == *q && *p != 0 && *q != 0)

    p++, q++;

  /* Now go backwards until the previous directory separator.  */

  while (p > name && !IS_DIR_SEPARATOR (p[-1]))

    p--;

  return p;

}

/* "Fancy" abort.  Reports where in the compiler someone gave up.

   This file is used only by build programs, so we're not as polite as

   the version in diagnostic.c.  */

void

fancy_abort (const char *file, int line, const char *func)

{

  internal_error ("abort in %s, at %s:%d", func, trim_filename (file), line);

}