| 1 | /* GDB-friendly replacement for <assert.h>. |
| 2 | Copyright (C) 2000, 2001, 2007, 2008, 2009, 2010, 2011 |
| 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 | /* A static assertion. This will cause a compile-time error if EXPR, |
| 24 | which must be a compile-time constant, is false. */ |
| 25 | |
| 26 | #define static_assert(expr) \ |
| 27 | extern int never_defined_just_used_for_checking[(expr) ? 1 : -1] |
| 28 | |
| 29 | /* PRAGMATICS: "gdb_assert.h":gdb_assert() is a lower case (rather |
| 30 | than upper case) macro since that provides the closest fit to the |
| 31 | existing lower case macro <assert.h>:assert() that it is |
| 32 | replacing. */ |
| 33 | |
| 34 | #define gdb_assert(expr) \ |
| 35 | ((void) ((expr) ? 0 : \ |
| 36 | (gdb_assert_fail (#expr, __FILE__, __LINE__, ASSERT_FUNCTION), 0))) |
| 37 | |
| 38 | /* Version 2.4 and later of GCC define a magical variable `__PRETTY_FUNCTION__' |
| 39 | which contains the name of the function currently being defined. |
| 40 | This is broken in G++ before version 2.6. |
| 41 | C9x has a similar variable called __func__, but prefer the GCC one since |
| 42 | it demangles C++ function names. */ |
| 43 | #if (GCC_VERSION >= 2004) |
| 44 | #define ASSERT_FUNCTION __PRETTY_FUNCTION__ |
| 45 | #else |
| 46 | #if defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L |
| 47 | #define ASSERT_FUNCTION __func__ |
| 48 | #endif |
| 49 | #endif |
| 50 | |
| 51 | /* This prints an "Assertion failed" message, asking the user if they |
| 52 | want to continue, dump core, or just exit. */ |
| 53 | #if defined (ASSERT_FUNCTION) |
| 54 | #define gdb_assert_fail(assertion, file, line, function) \ |
| 55 | internal_error (file, line, _("%s: Assertion `%s' failed."), \ |
| 56 | function, assertion) |
| 57 | #else |
| 58 | #define gdb_assert_fail(assertion, file, line, function) \ |
| 59 | internal_error (file, line, _("Assertion `%s' failed."), \ |
| 60 | assertion) |
| 61 | #endif |
| 62 | |
| 63 | /* The canonical form of gdb_assert (0). |
| 64 | MESSAGE is a string to include in the error message. */ |
| 65 | |
| 66 | #if defined (ASSERT_FUNCTION) |
| 67 | #define gdb_assert_not_reached(message) \ |
| 68 | internal_error (__FILE__, __LINE__, "%s: %s", ASSERT_FUNCTION, _(message)) |
| 69 | #else |
| 70 | #define gdb_assert_not_reached(message) \ |
| 71 | internal_error (__FILE__, __LINE__, _(message)) |
| 72 | #endif |
| 73 | |
| 74 | #endif /* gdb_assert.h */ |