Use unreachable!
for an unreachable code path
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@ -224,8 +224,14 @@ where
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} as usize;
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if k == n && c::GetLastError() == c::ERROR_INSUFFICIENT_BUFFER {
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n *= 2;
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} else if k >= n {
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} else if k > n {
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n = k;
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} else if k == n {
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// It is impossible to reach this point.
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// On success, k is the returned string length excluding the null.
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// On failure, k is the required buffer length including the null.
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// Therefore k never equals n.
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unreachable!();
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} else {
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return Ok(f2(&buf[..k]));
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}
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