Details
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Bug
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Status: Closed (View Workflow)
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Trivial
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Resolution: Fixed
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10.11, 11.4, 11.8
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None
Description
Nothing is broken by this, but the function Rows_log_event::write_data_header slightly over-allocates its buf by 2 bytes. It allocates 10 (ROWS_HEADER_LEN_V2), but only 8 are ever written (ROWS_HEADER_LEN).
bool Rows_log_event::write_data_header()
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{
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uchar buf[ROWS_HEADER_LEN_V2]; // No need to init the buffer
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DBUG_ASSERT(m_table_id != UINT32_MAX);
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DBUG_EXECUTE_IF("old_row_based_repl_4_byte_map_id_master",
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{
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int4store(buf + 0, (ulong) m_table_id);
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int2store(buf + 4, m_flags);
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return (write_data(buf, 6));
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});
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int6store(buf + RW_MAPID_OFFSET, m_table_id);
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int2store(buf + RW_FLAGS_OFFSET, m_flags);
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return write_data(buf, ROWS_HEADER_LEN);
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}
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