Implicit Quantifiers recurse in continuation of let-in

1 files changed, 9 insertions, 0 deletions

diff --git a/test-suite/bugs/closed/bug_10189.v b/test-suite/bugs/closed/bug_10189.v
new file mode 100644
index 0000000000..d603bff386
--- /dev/null
+++ b/test-suite/bugs/closed/bug_10189.v
@@ -0,0 +1,9 @@
+Definition foo : forall (x := unit) {y : nat}, nat := fun y => y.
+Check foo (y := 3). (*We fail to get implicits in the type past a let-in*)
+Definition foo' : forall (x : Set) {y : nat}, nat := fun _ y => y.
+Check foo' unit (y := 3). (* It works with a function binder *)
+
+Definition bar := let f {x} : nat -> nat := fun y => x in f (x := 3).
+(* Adding bar : nat -> nat gives implicits-in-term warning *)
+Fail Check bar (x := 3).
+(* The implicits from the type of the local definition leak to the outer term *)