[CoinUtils-tickets] [COIN-OR Common Utilities] #75: integer overflow in CoinArrayWithLength

[COIN-OR Common Utilities]

#75: integer overflow in CoinArrayWithLength
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Reporter:  mlubin  |      Type:  defect
  Status:  new     |  Priority:  critical
 Version:          |  Keywords:
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 I am on a system with sizeof(int)==4, sizeof(long)==8 and sizeof(void*) ==
 8. Although mallocArray and CoinArrayWithLength::conditionalNew take longs
 as parameters, the size_ member of CoinArrayWithLength is an int, not a
 long. All lengths in CoinArrayWithLength (and its descendants) should be
 changed from int to intptr_t (stdint.h), which is a signed type that is
 guaranteed to be large enough to store any memory address. I believe there
 are architectures with sizeof(long)==4 and sizeof(void*)==8, so it is not
 safe to change everything to long. I would suggest using intptr_t for
 CoinBigIndex as well.

 I traced a crash from clp when solving a large problem to this issue.

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Ticket URL: <https://projects.coin-or.org/ticket/75>
COIN-OR Common Utilities <http://projects.coin-or.org/CoinUtils>
Common data structures and linear algebra functions for COIN-OR projects