Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c94d40e4 authored by Elliott Hughes's avatar Elliott Hughes Committed by Android (Google) Code Review
Browse files

Merge "libutils: clearer abort on overflow." into tm-dev

parents 1f85546b b10bf63c

libutils/VectorImpl.cpp

+6 −8
Original line number Diff line number Diff line
@@ -279,12 +279,10 @@ ssize_t VectorImpl::replaceAt(const void* prototype, size_t index) 


ssize_t VectorImpl::removeItemsAt(size_t index, size_t count)

{

    ALOG_ASSERT((index+count)<=size(),

        "[%p] remove: index=%d, count=%d, size=%d",

               this, (int)index, (int)count, (int)size());



    if ((index+count) > size())

        return BAD_VALUE;

    size_t end;

    LOG_ALWAYS_FATAL_IF(__builtin_add_overflow(index, count, &end), "overflow: index=%zu count=%zu",

                        index, count);

    if (end > size()) return BAD_VALUE;

    _shrink(index, count);

    return index;

}

libutils/Vector_test.cpp

+9 −0
Original line number Diff line number Diff line
@@ -136,4 +136,13 @@ TEST_F(VectorTest, editArray_Shared) { 
  }

}



TEST_F(VectorTest, removeItemsAt_overflow) {

    android::Vector<int> v;

    for (int i = 0; i < 666; i++) v.add(i);



    ASSERT_DEATH(v.removeItemsAt(SIZE_MAX, 666), "overflow");

    ASSERT_DEATH(v.removeItemsAt(666, SIZE_MAX), "overflow");

    ASSERT_DEATH(v.removeItemsAt(SIZE_MAX, SIZE_MAX), "overflow");

}



} // namespace android