tree 62784e28466a2771ffd2b006033d56ca7ff6c965
parent 27aa9404fc4ef111c381ec0ab79aaddb44d45dea
author xunchang <xunchang@google.com> 1547745972 -0800
committer xunchang <xunchang@google.com> 1547745972 -0800

Fix potential size overflow in blockimg.cpp

Switch to 64 bit integers since the size of the entire src/tgt images may
not fit in size_t of ILP32.

There are other theoretical overflow cases in memory allocation and I/O
functions. However, they reside within a single transfer command and are
less likely to happen. I will evaluate and address them in separate
cls.

Test: unit tests pass
Bug: 122461124
Change-Id: Ib719ee695920877458fcfaa25c6ac058a5bbabf2