diff options
| -rw-r--r-- | API/API.mli | 2 | ||||
| -rw-r--r-- | plugins/extraction/extraction.ml | 6 | ||||
| -rw-r--r-- | test-suite/bugs/closed/4709.v | 18 |
3 files changed, 25 insertions, 1 deletions
diff --git a/API/API.mli b/API/API.mli index 3ae8ac64c..a0e77edd1 100644 --- a/API/API.mli +++ b/API/API.mli @@ -169,6 +169,8 @@ sig val map : (Constant.t -> Constant.t) -> t -> t val constant : t -> Constant.t val equal : t -> t -> bool + val unfolded : t -> bool + val unfold : t -> t end type evaluable_global_reference = diff --git a/plugins/extraction/extraction.ml b/plugins/extraction/extraction.ml index 661842790..7644b49ce 100644 --- a/plugins/extraction/extraction.ml +++ b/plugins/extraction/extraction.ml @@ -295,7 +295,11 @@ let rec extract_type env db j c args = | Ind ((kn,i),u) -> let s = (extract_ind env kn).ind_packets.(i).ip_sign in extract_type_app env db (IndRef (kn,i),s) args - | Case _ | Fix _ | CoFix _ | Proj _ -> Tunknown + | Proj (p,t) -> + (* Let's try to reduce, if it hasn't already been done. *) + if Projection.unfolded p then Tunknown + else extract_type env db j (Term.mkProj (Projection.unfold p, t)) args + | Case _ | Fix _ | CoFix _ -> Tunknown | _ -> assert false (*s Auxiliary function dealing with type application. diff --git a/test-suite/bugs/closed/4709.v b/test-suite/bugs/closed/4709.v new file mode 100644 index 000000000..a9edcc804 --- /dev/null +++ b/test-suite/bugs/closed/4709.v @@ -0,0 +1,18 @@ + +(** Bug 4709 https://coq.inria.fr/bug/4709 + Extraction wasn't reducing primitive projections in types. *) + +Require Extraction. + +Set Primitive Projections. + +Record t := Foo { foo : Type }. +Definition ty := foo (Foo nat). + +(* Without proper reduction of primitive projections in + [extract_type], the type [ty] was extracted as [Tunknown]. + Let's check it isn't the case anymore. *) + +Parameter check : nat. +Extract Constant check => "(O:ty)". +Extraction TestCompile ty check. |