Commit 4810f300 authored by unknown's avatar unknown
Browse files

Fix for bug #8477 (Embedded query_cache test crashes) 


libmysqld/emb_qcache.cc:
  Querycahce data transition fixed
parent 8ed40c4b

libmysqld/emb_qcache.cc

+11 −7
Original line number Diff line number Diff line
@@ -71,9 +71,11 @@ void Querycache_stream::store_int(uint i) 
    cur_data+= 4;

    return;

  }

  memcpy(cur_data, &i, rest_len);

  char buf[4];

  int4store(buf, i);

  memcpy(cur_data, buf, rest_len);

  use_next_block();

  memcpy(cur_data, ((byte*)&i)+rest_len, 4-rest_len);

  memcpy(cur_data, buf+rest_len, 4-rest_len);

  cur_data+= 4-rest_len;

}
@@ -186,10 +188,12 @@ uint Querycache_stream::load_int() 
    cur_data+= 4;

    return result;

  }

  memcpy(&result, cur_data, rest_len);

  char buf[4];

  memcpy(buf, cur_data, rest_len);

  use_next_block();

  memcpy(((byte*)&result)+rest_len, cur_data, 4-rest_len);

  memcpy(buf+rest_len, cur_data, 4-rest_len);

  cur_data+= 4-rest_len;

  result= uint4korr(buf);

  return result;

}
@@ -270,10 +274,10 @@ int Querycache_stream::load_column(MEM_ROOT *alloc, char** column) 
    return 0;

  }

  len--;

  if (!(*column= (char *)alloc_root(alloc, len + 4 + 1)))

  if (!(*column= (char *)alloc_root(alloc, len + sizeof(uint) + 1)))

    return 1;

  int4store(*column, len);

  (*column)+= 4;

  *((uint*)*column)= len;

  (*column)+= sizeof(uint);

  load_str_only(*column, len);

  return 1;

}