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ASAN found _two_ bugs in
_Copy_vbool
! #4045ASAN found _two_ bugs in
_Copy_vbool
! #4045Changes from 2 commits
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I am not sure if that change has been necessary,
We only get into the first branch with
_Last._Myoff >= _SourceShift
so if_Last._Myoff == _SourceShift == 0
then we would only do*_VbDest = (*_VbDest & _CarryMask) | _CarryVal;
and be done with it. because the second condition would ne been satisfied.That said it is hell and I am really not sure if I need to add some more documentation of the various conditions
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When
_Last._Myoff == 0
,_VbFirst
is past-the-end of the input sequence when thefor
loop completes. The unguarded read on red line 3845 was out of bounds in this case, and triggered ASan: