<p>hmm, on my local test, <code>conversion from 'size_t' to 'const arma::uword', possible loss of data</code> is eliminated when <code>ARMA_USE_CXX11</code> is enabled and <code>ARMA_64BIT_WORD</code> remain disabled by default. I think you'd better test it on appveyor?</p>

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