gcc/testsuite/gcc.dg/Wswitch-2.c

   1 /* Further -Wswitch tests.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wswitch" } */
   4
   5 enum e { e1 = 0, e2 = 1, e3 = 1, e4 = 2 };
   6
   7 int
   8 foo (enum e ei, int j)
   9 {
  10   switch (ei)
  11     {
  12     case e1: return 1;
  13     case e3: return 2;
  14     case e4: return 3;
  15     }   /* No warning here since e2 has the same value as e3.  */
  16   switch (ei) /* { dg-warning "enumeration value 'e4' not handled in switch" "enum e4" } */
  17     {
  18     case e1: return 1;
  19     case e2: return 2;
  20     }
  21   switch ((int) ei)
  22     {
  23     case e1: return 1;
  24     }   /* No warning here since switch condition was cast to int.  */
  25   switch ((enum e) j) /* { dg-warning "enumeration value 'e1' not handled in switch" "enum e1" } */
  26     {
  27     case e2: return 1;
  28     case e4: return 2;
  29     }
  30   return 0;
  31 }