tools/vty_check.cocci

   1 /*
   2  * VTY_DECLVAR_CONTEXT contains a built-in "if (!var) return;"
   3  */
   4 @@
   5 identifier var, typ;
   6 statement S;
   7 @@
   8
   9   {
  10     ...
  11   \(
  12     VTY_DECLVAR_CONTEXT(typ, var);
  13   \|
  14     VTY_DECLVAR_CONTEXT_SUB(typ, var);
  15   \)
  16     ...
  17 -   if (
  18 -         \(  !var  \|  var == NULL \)
  19 -      )
  20 -      S
  21     ...
  22   }