diff options
| author |  Matthieu Sozeau <mattam@mattam.org> | 2016-03-10 19:02:16 +0100 |
|---|---|---|
| committer | Matthieu Sozeau <mattam@mattam.org> | 2016-03-10 19:39:25 +0100 |
| commit | 4341f37cf3c51ed82c23f05846c8e6e8823d3cd6 (patch) | |
| tree | 668c44dae870e87d21c0abf3b0aac5e8980a784a /kernel/closure.ml | |
| parent | f1a8b27ffe0df4f207b0cfaac067c8201d07ae16 (diff) | |
Primitive projections: protect kernel from erroneous definitions.
E.g., Inductive foo := mkFoo { bla : foo } allowed to define recursive
records with eta for which conversion is incomplete.
- Eta-conversion only applies to BiFinite inductives
- Finiteness information is now checked by the kernel (the constructor types
must be strictly non recursive for BiFinite declarations).
Diffstat (limited to 'kernel/closure.ml')
| -rw-r--r-- | kernel/closure.ml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/closure.ml b/kernel/closure.ml index 2ba80d836..93e63d0fb 100644 --- a/kernel/closure.ml +++ b/kernel/closure.ml @@ -784,7 +784,7 @@ let eta_expand_ind_stack env ind m s (f, s') = let mib = lookup_mind (fst ind) env in match mib.Declarations.mind_record with | Some (Some (_,projs,pbs)) when - mib.Declarations.mind_finite <> Decl_kinds.CoFinite -> + mib.Declarations.mind_finite == Decl_kinds.BiFinite -> (* (Construct, pars1 .. parsm :: arg1...argn :: []) ~= (f, s') -> arg1..argn ~= (proj1 t...projn t) where t = zip (f,s') *) let pars = mib.Declarations.mind_nparams in |