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-rw-r--r--pretyping/evarutil.ml1
1 files changed, 1 insertions, 0 deletions
diff --git a/pretyping/evarutil.ml b/pretyping/evarutil.ml
index a53ecf5355..4ccf4817cd 100644
--- a/pretyping/evarutil.ml
+++ b/pretyping/evarutil.ml
@@ -71,6 +71,7 @@ let whd_castappevar_stack sigma c =
whrec (existential_value sigma (ev,args), l)
| Cast (c,_) -> whrec (c, l)
| App (f,args) -> whrec (f, Array.fold_right (fun a l -> a::l) args l)
+ | LetIn (_,v,_,b) -> whrec (subst1 v b, l)
| _ -> s
in
whrec (c, [])