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-rw-r--r--plugins/decl_mode/decl_interp.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/plugins/decl_mode/decl_interp.ml b/plugins/decl_mode/decl_interp.ml
index 4874552d6..34307a358 100644
--- a/plugins/decl_mode/decl_interp.ml
+++ b/plugins/decl_mode/decl_interp.ml
@@ -96,7 +96,7 @@ let rec add_vars_of_simple_pattern globs = function
add_vars_of_simple_pattern globs p
| CPatCstr (_,_,pl1,pl2) ->
List.fold_left add_vars_of_simple_pattern
- (List.fold_left add_vars_of_simple_pattern globs pl1) pl2
+ (Option.fold_left (List.fold_left add_vars_of_simple_pattern) globs pl1) pl2
| CPatNotation(_,_,(pl,pll),pl') ->
List.fold_left add_vars_of_simple_pattern globs (List.flatten (pl::pl'::pll))
| CPatAtom (_,Some (Libnames.Ident (_,id))) -> add_var id globs