arg-nonnull.h revision 05436638acc7c010349a69c3395f1a57c642dc62 
1/* A C macro for declaring that specific arguments must not be NULL.
2   Copyright (C) 2009-2012 Free Software Foundation, Inc.
3
4   This program is free software: you can redistribute it and/or modify it
5   under the terms of the GNU General Public License as published
6   by the Free Software Foundation; either version 3 of the License, or
7   (at your option) any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   General Public License for more details.
13
14   You should have received a copy of the GNU General Public License
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools
18   that the values passed as arguments n, ..., m must be non-NULL pointers.
19   n = 1 stands for the first argument, n = 2 for the second argument etc.  */
20#ifndef _GL_ARG_NONNULL
21# if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3
22#  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
23# else
24#  define _GL_ARG_NONNULL(params)
25# endif
26#endif
27