diff options
Diffstat (limited to 'pretyping')
| -rw-r--r-- | pretyping/pretyping.ml | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pretyping/pretyping.ml b/pretyping/pretyping.ml index a2fb8ea12d..1a5de0c50f 100644 --- a/pretyping/pretyping.ml +++ b/pretyping/pretyping.ml @@ -636,7 +636,10 @@ module Pretyping_F (Coercion : Coercion.S) = struct let cty = nf_evar !evdref cj.uj_type and tval = nf_evar !evdref tj.utj_val in let cj = match k with | VMcast when not (occur_existential cty || occur_existential tval) -> - ignore (Reduction.vm_conv Reduction.CUMUL env cty tval); cj + (try ignore (Reduction.vm_conv Reduction.CUMUL env cty tval); cj + with Reduction.NotConvertible -> + error_actual_type_loc loc env !evdref cj tval) + | _ -> inh_conv_coerce_to_tycon loc env evdref cj (mk_tycon tval) in let v = mkCast (cj.uj_val, k, tval) in |