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In UNALIGNED_MEMBER_PTR cast through void pointer

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Suppress warnings shown even with `-Waddress-of-packed-member`
disabled in gcc 11.
This commit is contained in:
Nobuyoshi Nakada 2023-01-20 23:04:27 +09:00
parent f0f2535c4d
commit 15328302dc
Notes: git 2023-01-20 15:31:02 +00:00 
Merged: https://github.com/ruby/ruby/pull/7161
1 changed files with 11 additions and 1 deletions
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12
internal/gc.h
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@ -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