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Only define RVALUE_OVERHEAD if undefined

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This allows RVALUE_OVERHEAD to be defined elsewhere.
This commit is contained in:
Peter Zhu 2025-05-20 09:56:42 -04:00
parent 84bfcaa80d
commit b043abc048
Notes: git 2025-05-20 17:00:19 +00:00 
Merged: https://github.com/ruby/ruby/pull/13381
1 changed files with 3 additions and 1 deletions
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4
gc/default/default.c
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@ -644,7 +644,9 @@ struct rvalue_overhead {
size_t rb_gc_impl_obj_slot_size(VALUE obj);
# define GET_RVALUE_OVERHEAD(obj) ((struct rvalue_overhead *)((uintptr_t)obj + rb_gc_impl_obj_slot_size(obj)))
#else
# define RVALUE_OVERHEAD 0
# ifndef RVALUE_OVERHEAD
# define RVALUE_OVERHEAD 0
# endif
#endif
#define BASE_SLOT_SIZE (sizeof(struct RBasic) + sizeof(VALUE[RBIMPL_RVALUE_EMBED_LEN_MAX]) + RVALUE_OVERHEAD)