diff options
Diffstat (limited to 'misc/sys/cdefs.h')
| -rw-r--r-- | misc/sys/cdefs.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 30a621ab8f..e490fc1aeb 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -330,6 +330,16 @@ # define __nonnull(params) _GL_ATTRIBUTE_NONNULL (params) #endif +/* The returns_nonnull function attribute marks the return type of the function + as always being non-null. */ +#ifndef __returns_nonnull +# if __GNUC_PREREQ (4, 9) || __glibc_has_attribute (__returns_nonnull__) +# define __returns_nonnull __attribute__ ((__returns_nonnull__)) +# else +# define __returns_nonnull +# endif +#endif + /* If fortification mode, we warn about unused results of certain function calls which can lead to problems. */ #if __GNUC_PREREQ (3,4) || __glibc_has_attribute (__warn_unused_result__) |