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Diffstat (limited to 'test-suite/bugs/closed/shouldsucceed/1711.v')
-rw-r--r-- | test-suite/bugs/closed/shouldsucceed/1711.v | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/shouldsucceed/1711.v b/test-suite/bugs/closed/shouldsucceed/1711.v new file mode 100644 index 00000000..e16612e3 --- /dev/null +++ b/test-suite/bugs/closed/shouldsucceed/1711.v @@ -0,0 +1,34 @@ +(* Test for evar map consistency - was failing at some point and was *) +(* assumed to be solved from revision 10151 (but using a bad fix) *) + +Require Import List. +Set Implicit Arguments. + +Inductive rose : Set := Rose : nat -> list rose -> rose. + +Section RoseRec. +Variables (P: rose -> Set)(L: list rose -> Set). +Hypothesis + (R: forall n rs, L rs -> P (Rose n rs)) + (Lnil: L nil) + (Lcons: forall r rs, P r -> L rs -> L (cons r rs)). + +Fixpoint rose_rec2 (t:rose) {struct t} : P t := + match t as x return P x with + | Rose n rs => + R n ((fix rs_ind (l' : list rose): L l' := + match l' as x return L x with + | nil => Lnil + | cons t tl => Lcons (rose_rec2 t) (rs_ind tl) + end) + rs) + end. +End RoseRec. + +Lemma rose_map : rose -> rose. +Proof. intro H; elim H using rose_rec2 with + (L:=fun _ => list rose); (* was assumed to fail here *) +(* (L:=fun (_:list rose) => list rose); *) + clear H; simpl; intros. + exact (Rose n rs). exact nil. exact (H::H0). +Defined. |