initialize_copy(p1) public

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static VALUE
strio_copy(VALUE copy, VALUE orig)
{
    struct StringIO *ptr;

    orig = rb_convert_type(orig, T_DATA, "StringIO", "to_strio");
    if (copy == orig) return copy;
    ptr = StringIO(orig);
    if (check_strio(copy)) {
        strio_free(DATA_PTR(copy));
    }
    DATA_PTR(copy) = ptr;
    OBJ_INFECT(copy, orig);
    RBASIC(copy)->flags &= ~STRIO_READWRITE;
    RBASIC(copy)->flags |= RBASIC(orig)->flags & STRIO_READWRITE;
    ++ptr->count;
    return copy;
}
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