sdcc/support/regression/tests/caseranges.c

   1 /** Test case for case range expressions
   2  */
   3
   4 #include <testfwk.h>
   5
   6 #ifdef __SDCC
   7 _Pragma("save")
   8 // case range expressions are a C2y feature
   9 _Pragma("std_c2y")
  10 // we know that some of the case ranges are empty
  11 _Pragma("disable_warning 300")
  12 #endif
  13
  14 // case range expressions were originally a GNU extension => test GNU-like host compilers, too
  15 #if defined(__SDCC) || defined(__GNUC__)
  16 void
  17 testCaseRanges (void)
  18 {
  19   for (int n = 0; n <= 11; n++)
  20   {
  21     // switch statement adapted from n3370
  22     switch (n)
  23     {
  24       case 1:
  25         ASSERT (n == 1);
  26         break;
  27       // case 4 : // error, overlaps 2 ... 5
  28       //   foo ();
  29       //   break;
  30       case 2 ... 5:
  31         ASSERT (n >= 2 && n <= 5);
  32         break;
  33       case 6 ... 6: // OK (but questionable)
  34         ASSERT (n == 6);
  35         break;
  36       case 8 ... 7: // not a GCC error
  37         ASSERT (0);
  38         break;
  39       case 10 ... 4: // not a GCC error despite overlap
  40         ASSERT (0);
  41         break;
  42       default:
  43         ASSERT (n < 1 || n > 6);
  44         break;
  45     }
  46   }
  47 }
  48 #endif
  49
  50 #ifdef __SDCC
  51 _Pragma("restore")
  52 #endif