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Commit 0afb8309 authored by Chad Brubaker's avatar Chad Brubaker Committed by Gerrit Code Review
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Merge "Fix benign unsigned overflow in AuidoTrackShared"

parents 3cce4937 cb50c54b

media/libmedia/AudioTrackShared.cpp

+2 −2
Original line number Diff line number Diff line
@@ -38,7 +38,7 @@ size_t clampToSize(T x) { 
// In general, this means (new_self) returned is max(self, other) + 1.



static uint32_t incrementSequence(uint32_t self, uint32_t other) {

    int32_t diff = (int32_t) self - other;

    int32_t diff = (int32_t) self - (int32_t) other;

    if (diff >= 0 && diff < INT32_MAX) {

        return self + 1; // we're already ahead of other.

    }
@@ -894,7 +894,7 @@ ssize_t StaticAudioTrackServerProxy::pollPosition() 
    if (mObserver.poll(state)) {

        StaticAudioTrackState trystate = mState;

        bool result;

        const int32_t diffSeq = state.mLoopSequence - state.mPositionSequence;

        const int32_t diffSeq = (int32_t) state.mLoopSequence - (int32_t) state.mPositionSequence;



        if (diffSeq < 0) {

            result = updateStateWithLoop(&trystate, state) == OK &&