Range.init does not imply Range.empty==true

[H. S. Teoh]

I noticed that in some places in Phobos range-related code, there's an
assumption that the following code works:

	auto someRangeFunction(R)(R range) {
		...
		R helperRange = range;
		...
		helperRange = R.init;
		assert(helperRange.empty);
		...
	}

Exercise for the reader: spot the bug.

Hint: what if R is an InputRangeObject?


T

-- 
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