gcc/testsuite/gcc.dg/20050121-2.c

   1 /* PR middle-end/19551 */
   2 /* { dg-options "-O2" } */
   3 /* { dg-do link } */
   4
   5 extern void abort ();
   6
   7 #define T(type, name) \
   8 extern __attribute__((pure)) _Complex type      \
   9 foo_c##name (int x);                            \
  10                                                 \
  11 void                                            \
  12 bar_c##name (type *x)                           \
  13 {                                               \
  14   type f = __real foo_c##name (5);              \
  15   if (0) *x = f;                                \
  16 }                                               \
  17                                                 \
  18 void                                            \
  19 baz_c##name (type *x)                           \
  20 {                                               \
  21   type f = __imag foo_c##name (5);              \
  22   if (0) *x = f;                                \
  23 }                                               \
  24                                                 \
  25 extern __attribute__((pure)) type               \
  26 foo_##name (int x);                             \
  27                                                 \
  28 void                                            \
  29 bar_##name (type *x)                            \
  30 {                                               \
  31   type f = foo_##name (5);                      \
  32   if (0) *x = f;                                \
  33 }
  34
  35 typedef long double ldouble_t;
  36 typedef long long llong;
  37
  38 T (float, float)
  39 T (double, double)
  40 T (long double, ldouble_t)
  41 T (char, char)
  42 T (short, short)
  43 T (int, int)
  44 T (long, long)
  45 T (long long, llong)
  46 #undef T
  47
  48 int
  49 main (void)
  50 {
  51 #define T(type, name) \
  52   {                                             \
  53     type var = 0;                               \
  54     bar_c##name (&var);                         \
  55     baz_c##name (&var);                         \
  56     bar_##name (&var);                          \
  57   }
  58   T (float, float)
  59   T (double, double)
  60   T (long double, ldouble_t)
  61   T (char, char)
  62   T (short, short)
  63   T (int, int)
  64   T (long, long)
  65   T (long long, llong)
  66   return 0;
  67 }