diff options
Diffstat (limited to 'misc/sys')
| -rw-r--r-- | misc/sys/cdefs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 6b9763a92a..86906c2478 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -563,4 +563,12 @@ _Static_assert (0, "IEEE 128-bits long double requires redirection on this platf # define __attr_access(x) #endif +/* Specify that a function such as setjmp or vfork may return + twice. */ +#if __GNUC_PREREQ (4, 1) +# define __attribute_returns_twice__ __attribute__ ((__returns_twice__)) +#else +# define __attribute_returns_twice__ /* Ignore. */ +#endif + #endif /* sys/cdefs.h */ |