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Fix probable bug. 

"Probable" because this was found by code inspection after enabling warning 27.  I assume
this could lead to an actual bug in the type-checker, but I have not tried to trigger it.

Fix confirmed by @garrigue.
master
alainfrisch 2016-03-09 12:00:42 +01:00
parent bbbdbdb318
commit 42a5b36bab
1 changed files with 1 additions and 1 deletions
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2
typing/ctype.ml
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@ -2237,7 +2237,7 @@ let complete_type_list ?(allow_absent=false) env nl1 lv2 mty2 nl2 tl2 =
(* raise Not_found rather than Unify if the module types are incompatible *)
let unify_package env unify_list lv1 p1 n1 tl1 lv2 p2 n2 tl2 =
let ntl2 = complete_type_list env n1 lv2 (Mty_ident p2) n2 tl2
and ntl1 = complete_type_list env n2 lv2 (Mty_ident p1) n1 tl1 in
and ntl1 = complete_type_list env n2 lv1 (Mty_ident p1) n1 tl1 in
unify_list (List.map snd ntl1) (List.map snd ntl2);
if eq_package_path env p1 p2
|| !package_subtype env p1 n1 tl1 p2 n2 tl2