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      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