1 /* GDB-friendly replacement for <assert.h>. 2 Copyright (C) 2000-2013 Free Software Foundation, Inc. 3 4 This file is part of GDB. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 18 19 #ifndef GDB_ASSERT_H 20 #define GDB_ASSERT_H 21 22 /* A static assertion. This will cause a compile-time error if EXPR, 23 which must be a compile-time constant, is false. */ 24 25 #define gdb_static_assert(expr) \ 26 extern int never_defined_just_used_for_checking[(expr) ? 1 : -1] 27 28 /* PRAGMATICS: "gdb_assert.h":gdb_assert() is a lower case (rather 29 than upper case) macro since that provides the closest fit to the 30 existing lower case macro <assert.h>:assert() that it is 31 replacing. */ 32 33 #define gdb_assert(expr) \ 34 ((void) ((expr) ? 0 : \ 35 (gdb_assert_fail (#expr, __FILE__, __LINE__, ASSERT_FUNCTION), 0))) 36 37 /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' 38 which contains the name of the function currently being defined. 39 This is broken in G++ before version 2.6. 40 C9x has a similar variable called __func__, but prefer the GCC one since 41 it demangles C++ function names. */ 42 #if (GCC_VERSION >= 2004) 43 #define ASSERT_FUNCTION __PRETTY_FUNCTION__ 44 #else 45 #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L 46 #define ASSERT_FUNCTION __func__ 47 #endif 48 #endif 49 50 /* This prints an "Assertion failed" message, asking the user if they 51 want to continue, dump core, or just exit. */ 52 #if defined (ASSERT_FUNCTION) 53 #define gdb_assert_fail(assertion, file, line, function) \ 54 internal_error (file, line, _("%s: Assertion `%s' failed."), \ 55 function, assertion) 56 #else 57 #define gdb_assert_fail(assertion, file, line, function) \ 58 internal_error (file, line, _("Assertion `%s' failed."), \ 59 assertion) 60 #endif 61 62 /* The canonical form of gdb_assert (0). 63 MESSAGE is a string to include in the error message. */ 64 65 #if defined (ASSERT_FUNCTION) 66 #define gdb_assert_not_reached(message) \ 67 internal_error (__FILE__, __LINE__, "%s: %s", ASSERT_FUNCTION, _(message)) 68 #else 69 #define gdb_assert_not_reached(message) \ 70 internal_error (__FILE__, __LINE__, _(message)) 71 #endif 72 73 #endif /* gdb_assert.h */ 74