https://issues.dlang.org/show_bug.cgi?id=14062

          Issue ID: 14062
           Summary: Not pure std.variant.Variant ctor
           Product: D
           Version: D2
          Hardware: x86
                OS: Windows
            Status: NEW
          Severity: regression
          Priority: P1
         Component: Phobos
          Assignee: nobody@puremagic.com
          Reporter: bearophile_hugs@eml.cc

This seems a regression:

void main() pure {
    import std.variant: Variant;
    auto v = Variant(1);
}

dmd 2.067alpha gives:

test.d(3): Error: pure function 'D main' cannot call impure function
'std.variant.VariantN!20u.VariantN.__ctor!int.this'
test.d(3): Error: pure function 'D main' cannot call impure function
'std.variant.VariantN!20u.VariantN.~this'
test.d(3): Error: pure function 'D main' cannot call impure function
'std.variant.VariantN!20u.VariantN.~this'

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