diff options
Diffstat (limited to 'misc/sys/cdefs.h')
| -rw-r--r-- | misc/sys/cdefs.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 3174a8524c..3d6a20bb52 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -93,6 +93,24 @@ #endif +/* Support for flexible arrays. */ +#if __GNUC_PREREQ (2,97) +/* GCC 2.97 supports C99 flexible array members. */ +# define __flexarr [] +#else +# ifdef __GNUC__ +# define __flexarr [0] +# else +# ifdef __STDC_VERSION__ && __STDC_VERSION__ >= 199901L +# define __flexarr [] +# else +/* Some other non-C99 compiler. Approximate with [1]. */ +# define __flexarr [1] +# endif +# endif +#endif + + /* __asm__ ("xyz") is used throughout the headers to rename functions at the assembly language level. This is wrapped by the __REDIRECT macro, in order to support compilers that can do this some other |