[Issue 12174] Problems caused by enum predicate with std.algorithm.sum

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=12174

--- Comment #4 from Kenji Hara <k.hara.pg at gmail.com> ---
*** Issue 11971 has been marked as a duplicate of this issue. ***

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