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f4fe7c8b55
```nim
type
K = enum
k1,k2
Variant = object
case kind: K
of k1:
discard
of k2:
discard
proc a(x: var K) = discard
proc b(x: ptr K) = discard
var x = Variant(kind: k1)
{.cast(uncheckedAssign).}:
# must be within uncheckedAssign to work
a(x.kind)
b(addr x.kind)
```
(cherry picked from commit 184d423779)