[ET Trac] [Einstein Toolkit] #1432: CarpetLib::poison_new_memory when aligning memory

Einstein Toolkit trac-noreply at einsteintoolkit.org
Wed Sep 4 15:24:13 CDT 2013

#1432: CarpetLib::poison_new_memory when aligning memory
  Reporter:  rhaas   |       Owner:  eschnett           
      Type:  defect  |      Status:  review             
  Priority:  major   |   Milestone:                     
 Component:  Carpet  |     Version:  development version
Resolution:          |    Keywords:                     

Comment (by eschnett):

 storage_base_ is the pointer returned from operator new. It is only needed
 when operator delete is called. There may be additional unused bytes
 between storage_base_ and storage_, or after storage_+nbytes. These are
 never used, and are thus also not memset.

 It would be correct to
 memset(storage_base_, poison_value, nbytes + alignment - 1)
 but as is, the patch leaves some bytes at the end of the used storage
 space unset.

Ticket URL: <https://trac.einsteintoolkit.org/ticket/1432#comment:2>
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