[fdo-trac] #564: SHP provider crashed when reallocing memory in ReadRawDataBlock.

[FDO]

#564: SHP provider crashed when reallocing memory in ReadRawDataBlock.
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   Reporter:  StevenXu  |       Owner:  StevenXu
       Type:  defect    |      Status:  new     
   Priority:  major     |   Milestone:  3.5.0   
  Component:  FDO API   |     Version:  3.4.0   
   Severity:  2         |    Keywords:          
External_id:  1242062   |  
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 The un-reasonble memory size directly results in this crash. For example,
 sometimes the size of reallocing memory is greater than 1 GB.

 Why the SHP provider need to realloc so large size of memory? SHP provider
 should get the wrong size of the data block in runtime.

 In some cases, the user's SHP file violated the SHP file specification so
 that our SHP provider misunderstand them.

 Another possible reason, there is a defect in the function
 ShpFileSet::MakeSpace, which would corrupt SHP file under some extremed
 conditions. At last, this corrupted SHP file result in this crash.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/564>
FDO <http://fdo.osgeo.org/>
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