Make string embad from shared
@@ -685,13 +685,20 @@ mrb_str_modify(mrb_state *mrb, struct RString *s)
p = RSTR_PTR(s);
len = s->as.heap.len;
+ if (len < RSTRING_EMBED_LEN_MAX) {
+ RSTR_SET_EMBED_FLAG(s);
+ RSTR_SET_EMBED_LEN(s, len);
+ ptr = RSTR_PTR(s);
+ }
+ else {
ptr = (char *)mrb_malloc(mrb, (size_t)len + 1);
+ s->as.heap.ptr = ptr;
+ s->as.heap.aux.capa = len;
+ }
if (p) {
memcpy(ptr, p, len);
}
ptr[len] = '\0';
- s->as.heap.ptr = ptr;
- s->as.heap.aux.capa = len;
str_decref(mrb, shared);
}
RSTR_UNSET_SHARED_FLAG(s);
