gdb/gdb_assert.h

   1 /* GDB-friendly replacement for <assert.h>.
   2    Copyright (C) 2000, 2001, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef GDB_ASSERT_H
  21 #define GDB_ASSERT_H
  22
  23 /* PRAGMATICS: "gdb_assert.h":gdb_assert() is a lower case (rather
  24    than upper case) macro since that provides the closest fit to the
  25    existing lower case macro <assert.h>:assert() that it is
  26    replacing. */
  27
  28 #define gdb_assert(expr)                                                      \
  29   ((void) ((expr) ? 0 :                                                       \
  30            (gdb_assert_fail (#expr, __FILE__, __LINE__, ASSERT_FUNCTION), 0)))
  31
  32 /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__'
  33    which contains the name of the function currently being defined.
  34    This is broken in G++ before version 2.6.
  35    C9x has a similar variable called __func__, but prefer the GCC one since
  36    it demangles C++ function names.  */
  37 #if (GCC_VERSION >= 2004)
  38 #define ASSERT_FUNCTION         __PRETTY_FUNCTION__
  39 #else
  40 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
  41 #define ASSERT_FUNCTION         __func__
  42 #endif
  43 #endif
  44
  45 /* This prints an "Assertion failed" message, asking the user if they
  46    want to continue, dump core, or just exit.  */
  47 #if defined (ASSERT_FUNCTION)
  48 #define gdb_assert_fail(assertion, file, line, function)                      \
  49   internal_error (file, line, _("%s: Assertion `%s' failed."),                   \
  50                   function, assertion)
  51 #else
  52 #define gdb_assert_fail(assertion, file, line, function)                      \
  53   internal_error (file, line, _("Assertion `%s' failed."),                       \
  54                   assertion)
  55 #endif
  56
  57 /* The canonical form of gdb_assert (0).
  58    MESSAGE is a string to include in the error message.  */
  59
  60 #if defined (ASSERT_FUNCTION)
  61 #define gdb_assert_not_reached(message) \
  62   internal_error (__FILE__, __LINE__, "%s: %s", ASSERT_FUNCTION, _(message))
  63 #else
  64 #define gdb_assert_not_reached(message) \
  65   internal_error (__FILE__, __LINE__, _(message))
  66 #endif
  67
  68 #endif /* gdb_assert.h */