check_no_return.c

   1 /*
   2  * smatch/check_no_return.c
   3  *
   4  * Copyright (C) 2010 Dan Carpenter.
   5  *
   6  * Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #include "smatch.h"
  11
  12 static int my_id;
  13 static int returned;
  14
  15 static void match_return(struct expression *ret_value)
  16 {
  17         if (__inline_fn)
  18                 return;
  19         if (is_reachable())
  20                 returned = 1;
  21 }
  22
  23 static void match_func_end(struct symbol *sym)
  24 {
  25         if (__inline_fn)
  26                 return;
  27         if (!is_reachable() && !returned)
  28                 sm_info("info: add to no_return_funcs");
  29         returned = 0;
  30 }
  31
  32 void check_no_return(int id)
  33 {
  34         if (!option_info)
  35                 return;
  36         my_id = id;
  37         add_hook(&match_return, RETURN_HOOK);
  38         add_hook(&match_func_end, END_FUNC_HOOK);
  39 }