gcc/testsuite/gcc.dg/Wswitch.c

   1 /* PR c/4475, PR c++/3780 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wswitch" } */
   4
   5 enum e { e1, e2 };
   6
   7 int
   8 foo (int i, int j, enum e ei, enum e ej, enum e ek, enum e el,
   9      enum e em, enum e en, enum e eo, enum e ep)
  10 {
  11   switch (i)
  12     {
  13     case 1: return 1;
  14     case 2: return 2;
  15     }
  16   switch (j)
  17     {
  18     case 3: return 4;
  19     case 4: return 3;
  20     default: break;
  21     }
  22   switch (ei) /* { dg-warning "enumeration value 'e1' not handled in switch" "enum e1" } */
  23     { /*{ dg-warning "enumeration value 'e2' not handled in switch" "enum e2" { target *-*-* } 22 } */
  24     }
  25   switch (ej)
  26     {
  27     default: break;
  28     }
  29   switch (ek) /* { dg-warning "enumeration value 'e2' not handled in switch" "enum e2" } */
  30     {
  31     case e1: return 1;
  32     }
  33   switch (el)
  34     {
  35     case e1: return 1;
  36     default: break;
  37     }
  38   switch (em)
  39     {
  40     case e1: return 1;
  41     case e2: return 2;
  42     }
  43   switch (en)
  44     {
  45     case e1: return 1;
  46     case e2: return 2;
  47     default: break;
  48     }
  49   switch (eo)
  50     {
  51     case e1: return 1;
  52     case e2: return 2;
  53     case 3: return 3; /* { dg-warning "case value '3' not in enumerated type 'enum e'" "excess 3" } */
  54     }
  55   switch (ep)
  56     {
  57     case e1: return 1;
  58     case e2: return 2;
  59     case 3: return 3; /* { dg-warning "case value '3' not in enumerated type 'enum e'" "excess 3" } */
  60     default: break;
  61     }
  62   return 0;
  63 }