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| author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-07-30 14:48:45 +0000 |
|---|---|---|
| committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-07-30 14:48:45 +0000 |
| commit | f6af68d95fd52d42571b941cb4ae2d610f9811b9 (patch) | |
| tree | 8c1d084130a3fa64a9048221777828b39c2ed0eb /eval_intern.h | |
| parent | ae878bdd9f070059f1cf3b2c2fbeb9515d99ef1b (diff) | |
| download | ruby-f6af68d95fd52d42571b941cb4ae2d610f9811b9.tar.gz | |
UNALIGNED_MEMBER_ACCESS
* eval_intern.h (UNALIGNED_MEMBER_ACCESS): suppress
address-of-packed-member warnings by clang 4.0.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59450 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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) |