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| author |  Pierre-Marie Pédrot <pierre-marie.pedrot@inria.fr> | 2018-06-21 10:36:17 +0200 |
|---|---|---|
| committer | Pierre-Marie Pédrot <pierre-marie.pedrot@inria.fr> | 2018-06-21 10:38:09 +0200 |
| commit | b098de535db3a17777fb77733229bbbfb914511f (patch) | |
| tree | 666b53186a7bcdd31f346eb13cff210e2596b1d4 /pretyping | |
| parent | 3d4899f841adc7cb0c1cec7c49ae3366dda3b217 (diff) | |
Fix #5719: Uncaught exception Invalid_argument.
It seems that lifting a term with a negative index is not equivalent to
strengthening it by applying to a dummy substitution. This looks suspicious
at best.
Diffstat (limited to 'pretyping')
| -rw-r--r-- | pretyping/cases.ml | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/pretyping/cases.ml b/pretyping/cases.ml index 93ca9dc5e..2d72b9db6 100644 --- a/pretyping/cases.ml +++ b/pretyping/cases.ml @@ -1699,7 +1699,8 @@ let abstract_tycon ?loc env evdref subst tycon extenv t = let ty = get_type_of env !evdref t in Evarutil.evd_comb1 (refresh_universes (Some false) env) evdref ty in - let ty = lift (-k) (aux x ty) in + let dummy_subst = List.init k (fun _ -> mkProp) in + let ty = substl dummy_subst (aux x ty) in let depvl = free_rels !evdref ty in let inst = List.map_i |