From 9d4ca879b88e3a21354dcda458d7e7f7ff6370b2 Mon Sep 17 00:00:00 2001
From: Tyler Mandry <tmandry@gmail.com>
Date: Fri, 2 Aug 2019 18:06:15 -0700
Subject: [PATCH] Add niche-in-generator test

---
 .../run-pass/generator/niche-in-generator.rs    | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/test/run-pass/generator/niche-in-generator.rs

diff --git a/src/test/run-pass/generator/niche-in-generator.rs b/src/test/run-pass/generator/niche-in-generator.rs
new file mode 100644
index 0000000000000..9a644ed44a670
--- /dev/null
+++ b/src/test/run-pass/generator/niche-in-generator.rs
@@ -0,0 +1,17 @@
+// Test that niche finding works with captured generator upvars.
+
+#![feature(generators)]
+
+use std::mem::size_of_val;
+
+fn take<T>(_: T) {}
+
+fn main() {
+    let x = false;
+    let gen1 = || {
+        yield;
+        take(x);
+    };
+
+    assert_eq!(size_of_val(&gen1), size_of_val(&Some(gen1)));
+}