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Merged Nathan from lp:~nlws/drizzle/fix-string-c-ptr-overrun

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plugin/myisam/ha_myisam.h
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/* class for the the myisam handler */
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#include <storage/myisam/myisam.h>
 
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#include <plugin/myisam/myisam.h>
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#define HA_RECOVER_NONE         0       /* No automatic recover */
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#define HA_RECOVER_DEFAULT      1       /* Automatic recover active */
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#define HA_RECOVER_FORCE        4       /* Recover even if we loose rows */
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#define HA_RECOVER_QUICK        8       /* Don't check rows in data file */
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extern ulong myisam_sort_buffer_size;
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extern TYPELIB myisam_recover_typelib;
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extern ulong myisam_recover_options;
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  int repair(Session *session, MI_CHECK &param, bool optimize);
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 public:
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  ha_myisam(handlerton *hton, TABLE_SHARE *table_arg);
 
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  ha_myisam(StorageEngine *engine, TableShare *table_arg);
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  ~ha_myisam() {}
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  handler *clone(MEM_ROOT *mem_root);
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  const char *table_type() const { return "MyISAM"; }
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  bool auto_repair() const { return myisam_recover_options != 0; }
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  int optimize(Session* session, HA_CHECK_OPT* check_opt);
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  int assign_to_keycache(Session* session, HA_CHECK_OPT* check_opt);
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  bool check_if_incompatible_data(HA_CREATE_INFO *info, uint32_t table_changes);
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#ifdef HAVE_QUERY_CACHE
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  bool register_query_cache_table(Session *session, char *table_key,
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                                     uint32_t key_length,
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                                     qc_engine_callback
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                                     *engine_callback,
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                                     uint64_t *engine_data);
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#endif
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  MI_INFO *file_ptr(void)
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  {
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    return file;
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                            uint32_t n_ranges, uint32_t mode, HANDLER_BUFFER *buf);
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  int multi_range_read_next(char **range_info);
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  ha_rows multi_range_read_info_const(uint32_t keyno, RANGE_SEQ_IF *seq,
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                                      void *seq_init_param, 
 
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                                      void *seq_init_param,
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                                      uint32_t n_ranges, uint32_t *bufsz,
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                                      uint32_t *flags, COST_VECT *cost);
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  int multi_range_read_info(uint32_t keyno, uint32_t n_ranges, uint32_t keys,
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                            uint32_t *bufsz, uint32_t *flags, COST_VECT *cost);
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  /* Index condition pushdown implementation */
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  Item *idx_cond_push(uint32_t keyno, Item* idx_cond);
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  bool check_if_supported_virtual_columns(void) { return true; }
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private:
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  DsMrr_impl ds_mrr;
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  key_map keys_with_parts;