smatch_unconstant_macros.c

   1 /*
   2  * Copyright (C) 2022 Oracle.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (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
  12  * GNU 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/copyleft/gpl.txt
  16  */
  17
  18 #include "smatch.h"
  19 #include "smatch_function_hashtable.h"
  20
  21 static int my_id;
  22
  23 DEFINE_STRING_HASHTABLE_STATIC(unconstant_macros);
  24
  25 int is_unconstant_macro(struct expression *expr)
  26 {
  27         char *ident;
  28
  29         ident = get_macro_name(expr->pos);
  30         if (!ident)
  31                 ident = pos_ident(expr->pos);
  32         if (!ident)
  33                 return 0;
  34         if (search_unconstant_macros(unconstant_macros, ident))
  35                 return 1;
  36         return 0;
  37 }
  38
  39 void register_unconstant_macros(int id)
  40 {
  41         my_id = id;
  42
  43         unconstant_macros = create_function_hashtable(100);
  44         load_strings("unconstant_macros", unconstant_macros);
  45 }