gcc/testsuite/gcc.dg/c2x-constexpr-9.c

   1 /* Test C23 constexpr.  Invalid code, compilation tests, IEEE arithmetic.  */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=c23 -pedantic-errors" } */
   4 /* { dg-add-options ieee } */
   5 /* { dg-require-effective-target inff } */
   6
   7 /* A conversion from signaling NaN to quiet NaN in a different format or type
   8    is not valid for constexpr.  */
   9 constexpr float fns = __builtin_nans (""); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  10 constexpr double dns = __builtin_nansf (""); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  11 constexpr long double ldns = __builtin_nans (""); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  12
  13 /* Test out-of-range values.  */
  14 constexpr float fu = __DBL_MIN__; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  15 constexpr float fo = __DBL_MAX__; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  16 constexpr float fp = 0x1.ffffffp0; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  17
  18 constexpr _Complex float cfur = __builtin_complex (__DBL_MIN__, 0.0); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  19 constexpr _Complex float cfor = __builtin_complex (__DBL_MAX__, 0.0); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  20 constexpr _Complex float cfpr = __builtin_complex (0x1.ffffffp0, 0.0); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  21
  22 constexpr _Complex float cfui = __builtin_complex (0.0, __DBL_MIN__); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  23 constexpr _Complex float cfoi = __builtin_complex (0.0, __DBL_MAX__); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  24 constexpr _Complex float cfpi = __builtin_complex (0.0, 0x1.ffffffp0); /* { dg-error "'constexpr' initializer not representable in type of object" } */
  25
  26 constexpr _Complex float cfd = __DBL_MAX__; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  27 constexpr _Complex float cfi = __LONG_LONG_MAX__; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  28
  29 void
  30 f0 ()
  31 {
  32   (constexpr float) { __builtin_nans ("") }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  33   (constexpr double) { __builtin_nansf ("") }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  34   (constexpr float) { __DBL_MIN__ }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  35   (constexpr float) { __DBL_MAX__ }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  36   (constexpr float) { 0x1.ffffffp0 }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  37   (constexpr _Complex float) { __builtin_complex (__DBL_MIN__, 0.0) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  38   (constexpr _Complex float) { __builtin_complex (__DBL_MAX__, 0.0) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  39   (constexpr _Complex float) { __builtin_complex (0x1.ffffffp0, 0.0) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  40   (constexpr _Complex float) { __builtin_complex (0.0, __DBL_MIN__) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  41   (constexpr _Complex float) { __builtin_complex (0.0, __DBL_MAX__) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  42   (constexpr _Complex float) { __builtin_complex (0.0, 0x1.ffffffp0) }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  43   (constexpr _Complex float) { __DBL_MAX__ }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  44   (constexpr _Complex float) { __LONG_LONG_MAX__ }; /* { dg-error "'constexpr' initializer not representable in type of object" } */
  45 }