[fdo-trac] #811: SHP provider: file pointer overflow in the case of large DBF files

[FDO]

#811: SHP provider: file pointer overflow in the case of large DBF files
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   Reporter:  danstoica  |       Owner:  gregboone
       Type:  defect     |      Status:  new      
   Priority:  major      |   Milestone:  3.6.0    
  Component:  FDO API    |     Version:  3.6.0    
   Severity:  2          |    Keywords:           
External_id:             |  
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 The following code is faulty for large DBF files (as number of records)
 and large record size:

 SetFilePointer64((FdoInt64)(m_nRecordStart + (nRecord *
 m_DBFHeader.wRecordSize)))

 All the integers involved in the file pointer values are Int32 thus the
 result is an int32 (max_int= 2147483647). In the case of recordNumber =
 700000 a record size of 3070 will be enough to result into a negative
 number for the file pointer.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/811>
FDO <http://fdo.osgeo.org/>
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