https://issues.dlang.org/show_bug.cgi?id=17187

--- Comment #1 from Jack Stouffer <jack@jackstouffer.com> ---
BTW this is a bug because this works

auto str = "aaa";
auto spec = singleSpec("%s");
dchar[3] ret = ['a', 'a', 'a'];
assert(str.unformatValue!(dchar[3])(spec) == ret);

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