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;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
;; RUN: wasm-opt %s -all --roundtrip -S -o - | filecheck %s
;; Regression test for an issue in which roundtripping failed to reproduce the
;; original types because type canonicalization was incorrect when the canonical
;; types already existed in the store.
(module
(rec
;; CHECK: (rec
;; CHECK-NEXT: (type $A (sub (struct (field (ref $C)))))
(type $A (sub (struct (field (ref $C)))))
;; CHECK: (type $B (func (param (ref $A)) (result (ref $B))))
(type $B (func (param (ref $A)) (result (ref $B))))
;; CHECK: (type $C (struct (field (mut (ref $B)))))
(type $C (struct (field (mut (ref $B)))))
;; CHECK: (type $D (sub $A (struct (field (ref $C)) (field (ref $A)))))
(type $D (sub $A (struct (field (ref $C)) (field (ref $A)))))
)
;; CHECK: (func $use-types (type $4) (param $0 (ref $A)) (param $1 (ref $D))
;; CHECK-NEXT: (nop)
;; CHECK-NEXT: )
(func $use-types (param (ref $A) (ref $D))
(nop)
)
)
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