extern "C" {
#endif
+#include <features.h>
+
#include <bits/setjmp.h>
+typedef struct __jmp_buf_tag {
+ __jmp_buf __jb;
+ unsigned long __fl;
+ unsigned long __ss[128/sizeof(long)];
+} jmp_buf[1];
+
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+#define __setjmp_attr __attribute__((__returns_twice__))
+#else
+#define __setjmp_attr
+#endif
#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
|| defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
|| defined(_BSD_SOURCE)
-typedef struct {
- jmp_buf __jb;
- unsigned long __fl;
- unsigned long __ss[128/sizeof(long)];
-} sigjmp_buf[1];
-int sigsetjmp (sigjmp_buf, int);
-void siglongjmp (sigjmp_buf, int);
+typedef jmp_buf sigjmp_buf;
+int sigsetjmp (sigjmp_buf, int) __setjmp_attr;
+_Noreturn void siglongjmp (sigjmp_buf, int);
#endif
-
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) \
|| defined(_BSD_SOURCE)
-int _setjmp (jmp_buf);
-void _longjmp (jmp_buf, int);
+int _setjmp (jmp_buf) __setjmp_attr;
+_Noreturn void _longjmp (jmp_buf, int);
#endif
-
-int setjmp (jmp_buf);
-void longjmp (jmp_buf, int);
+int setjmp (jmp_buf) __setjmp_attr;
+_Noreturn void longjmp (jmp_buf, int);
#define setjmp setjmp
-#define longjmp longjmp
+
+#undef __setjmp_attr
#ifdef __cplusplus
}