diff options
Diffstat (limited to 'eval_intern.h')
| -rw-r--r-- | eval_intern.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/eval_intern.h b/eval_intern.h index fb28a31829..610546153f 100644 --- a/eval_intern.h +++ b/eval_intern.h @@ -157,6 +157,22 @@ LONG WINAPI rb_w32_stack_overflow_handler(struct _EXCEPTION_POINTERS *); # define VAR_NOCLOBBERED(var) var #endif +#if defined(USE_UNALIGNED_MEMBER_ACCESS) && USE_UNALIGNED_MEMBER_ACCESS +# define UNALIGNED_MEMBER_ACCESS(expr) __extension__({ \ + _Pragma("GCC diagnostic push"); \ + _Pragma("GCC diagnostic ignored \"-Waddress-of-packed-member\""); \ + typeof(expr) unaligned_member_access_result = (expr); \ + _Pragma("GCC diagnostic pop"); \ + unaligned_member_access_result; \ +}) +#else +# define UNALIGNED_MEMBER_ACCESS(expr) expr +#endif +#define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem) + +#undef RB_OBJ_WRITE +#define RB_OBJ_WRITE(a, slot, b) UNALIGNED_MEMBER_ACCESS(rb_obj_write((VALUE)(a), (VALUE *)(slot), (VALUE)(b), __FILE__, __LINE__)) + /* clear th->ec.tag->state, and return the value */ static inline int rb_threadptr_tag_state(rb_thread_t *th) |