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gdb_assert.h
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1 /* GDB-friendly replacement for <assert.h>.
2  Copyright (C) 2000-2015 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__, FUNCTION_NAME), 0)))
36 
37 /* This prints an "Assertion failed" message, asking the user if they
38  want to continue, dump core, or just exit. */
39 #if defined (FUNCTION_NAME)
40 #define gdb_assert_fail(assertion, file, line, function) \
41  internal_error (file, line, _("%s: Assertion `%s' failed."), \
42  function, assertion)
43 #else
44 #define gdb_assert_fail(assertion, file, line, function) \
45  internal_error (file, line, _("Assertion `%s' failed."), \
46  assertion)
47 #endif
48 
49 /* The canonical form of gdb_assert (0).
50  MESSAGE is a string to include in the error message. */
51 
52 #if defined (FUNCTION_NAME)
53 #define gdb_assert_not_reached(message) \
54  internal_error (__FILE__, __LINE__, "%s: %s", FUNCTION_NAME, _(message))
55 #else
56 #define gdb_assert_not_reached(message) \
57  internal_error (__FILE__, __LINE__, _(message))
58 #endif
59 
60 #endif /* gdb_assert.h */