diff options
Diffstat (limited to 'include/ruby/defines.h')
| -rw-r--r-- | include/ruby/defines.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/ruby/defines.h b/include/ruby/defines.h index da2ba24109..322df4c6d2 100644 --- a/include/ruby/defines.h +++ b/include/ruby/defines.h @@ -380,6 +380,16 @@ void rb_ia64_flushrs(void); #define RUBY_ALIGNAS(x) y #endif +#ifdef RUBY_ALIGNOF +/* OK, take that definition */ +#elif defined(__cplusplus) && (__cplusplus >= 201103L) +#define RUBY_ALIGNOF alignof +#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L) +#define RUBY_ALIGNOF _Alignof +#else +#define RUBY_ALIGNOF(x) ((size_t)offsetof(struct { char f1; type f2; }, f2)) +#endif + RUBY_SYMBOL_EXPORT_END #if defined(__cplusplus) |