• Jinoh Kang's avatar
    ntdll: Check for delayed free block in heap_validate_ptr. · b887e31d
    Jinoh Kang authored
    Today, the heap does not catch double free when both HEAP_VALIDATE and
    HEAP_FREE_CHECKING_ENABLED are on, since validate_used_block() accepts
    BLOCK_TYPE_DEAD as a valid (allocated) block type.
    
    Fix this by adding an explicit check that rejects BLOCK_TYPE_DEAD in
    heap_validate_ptr.
    b887e31d
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