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| author | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-01-20 23:04:27 +0900 |
|---|---|---|
| committer | Nobuyoshi Nakada <nobu@ruby-lang.org> | 2023-01-21 00:30:34 +0900 |
| commit | 15328302dc7154927ebbcec880c9ec200862a1cd (patch) | |
| tree | 68739c648cc4a9a061d08ec02150bbea2242deeb /internal/gc.h | |
| parent | f0f2535c4daad91872c9f133f8812c421edf0dbb (diff) | |
| download | ruby-15328302dc7154927ebbcec880c9ec200862a1cd.tar.gz | |
In `UNALIGNED_MEMBER_PTR` cast through `void` pointer
Suppress warnings shown even with `-Waddress-of-packed-member`
disabled in gcc 11.
Diffstat (limited to 'internal/gc.h')
| -rw-r--r-- | internal/gc.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/internal/gc.h b/internal/gc.h index 0c6fb2bcaf..0e17a0f001 100644 --- a/internal/gc.h +++ b/internal/gc.h @@ -59,9 +59,19 @@ struct rb_objspace; /* in vm_core.h */ COMPILER_WARNING_POP; \ unaligned_member_access_result; \ }) + +# define UNALIGNED_MEMBER_PTR(ptr, mem) __extension__({ \ + COMPILER_WARNING_PUSH; \ + COMPILER_WARNING_IGNORED(-Waddress-of-packed-member); \ + const volatile void *unaligned_member_ptr_result = &(ptr)->mem; \ + COMPILER_WARNING_POP; \ + (__typeof__((ptr)->mem) *)unaligned_member_ptr_result; \ +}) #endif -#define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem) +#ifndef UNALIGNED_MEMBER_PTR +# define UNALIGNED_MEMBER_PTR(ptr, mem) UNALIGNED_MEMBER_ACCESS(&(ptr)->mem) +#endif // We use SIZE_POOL_COUNT number of shape IDs for transitions out of different size pools // The next available shapd ID will be the SPECIAL_CONST_SHAPE_ID |