From 6c195ede54fe9f75c794204fb39c915a9e5581ed Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Wed, 26 Jun 2019 23:25:53 -0400
Subject: [PATCH] add test case for defer modifying return value before
 returned

See #961
---
 test/stage1/behavior/defer.zig | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/test/stage1/behavior/defer.zig b/test/stage1/behavior/defer.zig
index 0bb9125e7..6c0e2a432 100644
--- a/test/stage1/behavior/defer.zig
+++ b/test/stage1/behavior/defer.zig
@@ -76,3 +76,20 @@ fn testNestedFnErrDefer() anyerror!void {
     };
     return S.baz();
 }
+
+test "return variable while defer expression in scope to modify it" {
+    const S = struct {
+        fn doTheTest() void {
+            expect(notNull().? == 1);
+        }
+
+        fn notNull() ?u8 {
+            var res: ?u8 = 1;
+            defer res = null;
+            return res;
+        }
+    };
+
+    S.doTheTest();
+    comptime S.doTheTest();
+}