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// RUN: tblgen %s | grep {1, 2, 3} | count 4
// RUN: tblgen %s | grep {4, 5, 6} | count 2
class A<list<list<int>> vals> {
list<int> first = vals[0];
list<int> rest = !if(!null(!cdr(vals)), vals[0], vals[1]);
}
def One : A<[[1,2,3]]>;
def Two : A<[[1,2,3],[4,5,6]]>;
class B<list<int> v> {
list<int> vals = v;
}
class BB<list<list<int>> vals> : B<!if(!null(!cdr(vals)), vals[0], vals[1])>;
class BBB<list<list<int>> vals> : BB<vals>;
def OneB : BBB<[[1,2,3]]>;
def TwoB : BBB<[[1,2,3],[4,5,6]]>;
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