+
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
+ || defined(_BSD_SOURCE)
+typedef struct __sigjmp_buf {
+ jmp_buf __jb;
+ unsigned long __fl;
+ unsigned long __ss[128/sizeof(long)];
+} sigjmp_buf[1];
+int sigsetjmp (sigjmp_buf, int);
+_Noreturn void siglongjmp (sigjmp_buf, int);