1  /* A C macro for declaring that specific arguments must not be NULL.
       2     Copyright (C) 2009-2023 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 Lesser General Public License as published
       6     by the Free Software Foundation; either version 2 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     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public License
      15     along with this program.  If not, see <https://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__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__
      22  #  define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params))
      23  # else
      24  #  define _GL_ARG_NONNULL(params)
      25  # endif
      26  #endif