diff options
Diffstat (limited to 'plugins/micromega/persistent_cache.ml')
| -rw-r--r-- | plugins/micromega/persistent_cache.ml | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/plugins/micromega/persistent_cache.ml b/plugins/micromega/persistent_cache.ml index 2dc0d00323..88b13abf9a 100644 --- a/plugins/micromega/persistent_cache.ml +++ b/plugins/micromega/persistent_cache.ml @@ -1,6 +1,6 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2015 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) @@ -212,9 +212,11 @@ let find t k = res let memo cache f = - let tbl = lazy (open_in cache) in - fun x -> - let tbl = Lazy.force tbl in + let tbl = lazy (try Some (open_in cache) with _ -> None) in + fun x -> + match Lazy.force tbl with + | None -> f x + | Some tbl -> try find tbl x with |