signal/bits/types/sigval_t.h

   1 #ifndef __sigval_t_defined
   2 #define __sigval_t_defined
   3
   4 #include <bits/types/__sigval_t.h>
   5
   6 /* To avoid sigval_t (not a standard type name) having C++ name
   7    mangling depending on whether the selected standard includes union
   8    sigval, it should not be defined at all when using a standard for
   9    which the sigval name is not reserved; in that case, headers should
  10    not include <bits/types/sigval_t.h> and should use only the
  11    internal __sigval_t name.  */
  12 #ifndef __USE_POSIX199309
  13 # error "sigval_t defined for standard not including union sigval"
  14 #endif
  15
  16 typedef __sigval_t sigval_t;
  17
  18 #endif