|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+typedef int greg_t, gregset_t[18];
typedef struct sigcontext
{
unsigned long trap_no, error_code, oldmask;
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
+#define SIGIOT SIGABRT
#define SIGBUS 7
#define SIGFPE 8
#define SIGKILL 9