gcc/testsuite/gcc.dg/pr69543.c

   1 /* PR preprocessor/69543 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Wuninitialized" } */
   4
   5 # define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
   6     _Pragma ("GCC diagnostic push") \
   7     _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
   8     _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
   9 # define YY_IGNORE_MAYBE_UNINITIALIZED_END \
  10     _Pragma ("GCC diagnostic pop")
  11
  12 void test (char yylval)
  13 {
  14   char *yyvsp;
  15   YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
  16   *++yyvsp = yylval;
  17   YY_IGNORE_MAYBE_UNINITIALIZED_END
  18 }