gcc/testsuite/gcc.dg/c23-enum-3.c

   1 /* Test C23 enumerations with values not representable in int.  Test values
   2    outside the range of standard or extended integer types are diagnosed,
   3    when __int128 is unsupported.  */
   4 /* { dg-do compile { target { ! int128 } } } */
   5 /* { dg-options "-std=c23 -pedantic-errors" } */
   6
   7 enum e1 { e1a = __LONG_LONG_MAX__, e1b }; /* { dg-error "overflow in enumeration values" } */
   8
   9 enum e2 { e2a = __LONG_LONG_MAX__ * 2ULL + 1ULL, e2b }; /* { dg-error "overflow in enumeration values" } */
  10
  11 /* Likewise, when it's the enum as a whole that can't fit in any standard or
  12    extended type, but the individual enumerators fit (some fitting a signed
  13    type and some fitting an unsigned type).  */
  14 enum e3 { e3a = -__LONG_LONG_MAX__ - 1, e3b = __LONG_LONG_MAX__ * 2ULL + 1ULL }; /* { dg-error "enumeration values exceed range of largest integer" } */