Simplify unaligned write for pre-computed string hash
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a8730adb60
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6416ee33eb
5
string.c
5
string.c
@ -376,9 +376,8 @@ str_precompute_hash(VALUE str)
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RUBY_ASSERT(free_bytes >= sizeof(st_index_t));
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#endif
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typedef struct {char bytes[sizeof(st_index_t)];} unaligned_index;
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union {st_index_t i; unaligned_index b;} u = {.i = str_do_hash(str)};
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*(unaligned_index *)(RSTRING_END(str) + TERM_LEN(str)) = u.b;
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st_index_t hash = str_do_hash(str);
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memcpy(RSTRING_END(str) + TERM_LEN(str), &hash, sizeof(hash));
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FL_SET(str, STR_PRECOMPUTED_HASH);
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