[Issue 11148] Can't implicitly convert const(BigInt) or immutable(BigInt) to BigInt

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=11148



--- Comment #5 from hsteoh at quickfur.ath.cx 2013-10-10 11:39:18 PDT ---
You can't pass an immutable(BigInt) to a function that takes unqual BigInt,
because that breaks the type system (and risks breaking immutability). The
function needs to take const(BigInt) if it doesn't need to propagate qualifiers
to its return type, or inout(BigInt) if it does.

If the function needs to modify the BigInt, then it should rightly reject any
attempt to pass in an immutable BigInt.

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