1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/unboxed-closures/unboxed-closures-infer-upvar.rs b/src/test/ui/unboxed-closures/unboxed-closures-infer-upvar.rs
new file mode 100644
index 000000000..6a5e5b9c2
--- /dev/null
+++ b/src/test/ui/unboxed-closures/unboxed-closures-infer-upvar.rs
@@ -0,0 +1,13 @@
+// run-pass
+// Test that the type variable in the type(`Vec<_>`) of a closed over
+// variable does not interfere with type inference.
+
+fn f<F: FnMut()>(mut f: F) {
+    f();
+}
+
+fn main() {
+    let mut v: Vec<_> = vec![];
+    f(|| v.push(0));
+    assert_eq!(v, [0]);
+}