Avoid undefined behaviour (which causes traps on VAX).
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@ -290,6 +290,9 @@ static unsigned HOST_WIDE_INT
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lowpart_bitmask (int n)
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{
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unsigned HOST_WIDE_INT mask = ~(unsigned HOST_WIDE_INT) 0;
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gcc_assert(n >= 0 && n <= HOST_BITS_PER_WIDE_INT);
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if (n == 0)
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return 0;
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return mask >> (HOST_BITS_PER_WIDE_INT - n);
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}
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