Panic with recursive CTE

2024-02-06T10:38:51.193 Q S request text: <ud>WITH RECURSIVE rcte AS (SELECT * FROM default UNION SELECT * FROM rcte) SELECT * FROM default LEFT OUTER JOIN rcte ON true;</ud>

2024-02-06T10:38:51.193 Q S query context: <ud></ud>

2024-02-06T10:38:51.193 Q S stack: goroutine 22450 [running]:

github.com/couchbase/query/server.(*Server).serviceRequest.func1()

        /home/dhaggart/code/src/github.com/couchbase/query/server/server.go:1242 +0x8c

panic({0x2d184e0?, 0x4f0f400?})

        /usr/lib/go-1.21.1/src/runtime/panic.go:914 +0x21f

github.com/couchbase/query/planner.ClassifyExprKeyspace({0x0, 0x0}, 0xc0020416b0, 0xc0020417a0, {0xc0022a4930, 0x4}, 0x1, 0x1, 0x0, 0xc000722870)

        /home/dhaggart/code/src/github.com/couchbase/query/planner/expr_classifier.go:47 +0xef

github.com/couchbase/query/planner.(*builder).AddOuterOnclause(0xc000984dc0, {0x0, 0x0}, {0xc0022a4930, 0x4}, 0xc000722870?, 0xc001901c80?)

        /home/dhaggart/code/src/github.com/couchbase/query/planner/optimizer.go:79 +0xce

github.com/couchbase/query-ee/optimizer.(*optimizer).getBaseLevel(0xc0007227e0, {0x39e24c0, 0xc00198a480})

        /home/dhaggart/code/src/github.com/couchbase/query-ee/optimizer/join_enumerate.go:200 +0x6a2

github.com/couchbase/query-ee/optimizer.(*optimizer).enumerateJoins(0xc0007227e0, {0x39e24c0?, 0xc00198a480?})

        /home/dhaggart/code/src/github.com/couchbase/query-ee/optimizer/join_enumerate.go:30 +0x3a

github.com/couchbase/query-ee/optimizer.(*optimizer).OptimizeQueryBlock(0xc0007227e0, {0x3a0b0a0, 0xc000984dc0}, {0x39e24c0, 0xc00198a480}, {0x0?, 0x0}, {0x0?, 0x0}, 0x0, ...)

        /home/dhaggart/code/src/github.com/couchbase/query-ee/optimizer/optimizer.go:123 +0x6b6

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