#define SIGMASKTYPE sigset_t
#define SIGEMPTYMASK (empty_mask)
-#define SIGFULLMASK (full_mask)
-extern sigset_t empty_mask, full_mask;
+extern sigset_t empty_mask;
/* POSIX pretty much destroys any possibility of writing sigmask as a
macro in standard C. We always define our own version because the
/* Whether this is what all systems want or not, this is what
appears to be assumed in the source, for example data.c:arith_error. */
-typedef RETSIGTYPE (*signal_handler_t) (int);
+typedef void (*signal_handler_t) (int);
signal_handler_t sys_signal (int signal_number, signal_handler_t action);
sigset_t sys_sigblock (sigset_t new_mask);
sigset_t sys_sigunblock (sigset_t new_mask);
sigset_t sys_sigsetmask (sigset_t new_mask);
+#if ! (defined TIOCNOTTY || defined USG5 || defined CYGWIN)
+void croak (char *) NO_RETURN;
+#endif
#define sys_sigdel(MASK,SIG) sigdelset (&MASK,SIG)