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[DFSan] Add __dfsan_mem_transfer_callback.

Authored by morehouse on Feb 28 2020, 2:02 PM.



When -dfsan-event-callbacks is specified, insert a call to
__dfsan_mem_transfer_callback on every memcpy and memmove.

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morehouse created this revision.Feb 28 2020, 2:02 PM
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kcc accepted this revision.Feb 28 2020, 2:14 PM


We *may* need to add more arguments to these callbacks (with the data pointers) later.
Right now I am not sure.

This revision is now accepted and ready to land.Feb 28 2020, 2:14 PM
This revision was automatically updated to reflect the committed changes.