gcc/testsuite/c-c++-common/pr69543-1.c

   1 /* { dg-options "-Wuninitialized" } */
   2
   3 /* Verify disabling a warning, where the _Pragma is within
   4    a macro, but the affected code is *not* in a macro.  */
   5
   6 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN    \
   7     _Pragma ("GCC diagnostic push") \
   8     _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
   9     _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
  10 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
  11     _Pragma ("GCC diagnostic pop")
  12
  13 void test (char yylval)
  14 {
  15   char *yyvsp;
  16   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  17   *++yyvsp = yylval;
  18   YY_IGNORE_MAYBE_UNINITIALIZED_END
  19 }