diff options
author | Stephane Glondu <steph@glondu.net> | 2012-06-04 12:23:14 +0200 |
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committer | Stephane Glondu <steph@glondu.net> | 2012-06-04 12:23:14 +0200 |
commit | 86535d84cc3cffeee1dcd8545343f234e7285530 (patch) | |
tree | 9b221c283c2971f7ac151397231059e1d239e723 /test-suite/bugs/closed/shouldsucceed/2733.v | |
parent | 39efc41237ec906226a3a53d7396d51173495204 (diff) | |
parent | 61dc740ed1c3780cccaec00d059a28f0d31d0052 (diff) |
Remove non-DFSG contentsupstream/8.4_gamma0+really8.4beta2+dfsg
Diffstat (limited to 'test-suite/bugs/closed/shouldsucceed/2733.v')
-rw-r--r-- | test-suite/bugs/closed/shouldsucceed/2733.v | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test-suite/bugs/closed/shouldsucceed/2733.v b/test-suite/bugs/closed/shouldsucceed/2733.v new file mode 100644 index 00000000..fd7bd3bd --- /dev/null +++ b/test-suite/bugs/closed/shouldsucceed/2733.v @@ -0,0 +1,26 @@ +Definition goodid : forall {A} (x: A), A := fun A x => x. +Definition wrongid : forall A (x: A), A := fun {A} x => x. + +Inductive ty := N | B. + +Inductive alt_list : ty -> ty -> Type := + | nil {k} : alt_list k k + | Ncons {k} : nat -> alt_list B k -> alt_list N k + | Bcons {k} : bool -> alt_list N k -> alt_list B k. + +Definition trullynul k {k'} (l : alt_list k k') := +match k,l with + |N,l' => Ncons 0 (Bcons true l') + |B,l' => Bcons true (Ncons 0 l') +end. + +Fixpoint app (P : forall {k k'}, alt_list k k' -> alt_list k k') {t1 t2} (l : alt_list t1 t2) {struct l}: forall {t3}, alt_list t2 t3 -> +alt_list t1 t3 := + match l with + | nil _ => fun _ l2 => P l2 + | Ncons _ n l1 => fun _ l2 => Ncons n (app (@P) l1 l2) + | Bcons _ b l1 => fun _ l2 => Bcons b (app (@P) l1 l2) + end. + +Check (fun {t t'} (l: alt_list t t') => + app trullynul (goodid l) (wrongid _ nil)). |