From d53e6f87e94c83651ad1e22f294f6f59d8d1b5d1 Mon Sep 17 00:00:00 2001
From: HMPerson1 <hmperson1@gmail.com>
Date: Wed, 24 Oct 2018 22:27:47 -0400
Subject: [PATCH] Add tests for more than one level of reference

---
 tests/ui/mem_discriminant.rs     |  6 ++++++
 tests/ui/mem_discriminant.stderr | 18 +++++++++++++++++-
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/tests/ui/mem_discriminant.rs b/tests/ui/mem_discriminant.rs
index 64d056fb2fe..5ddd90ac8b5 100644
--- a/tests/ui/mem_discriminant.rs
+++ b/tests/ui/mem_discriminant.rs
@@ -40,10 +40,16 @@ fn main() {
 
     mem_discriminant_but_in_a_macro!(&rro);
 
+    let rrrrro = &&&rro;
+    mem::discriminant(&rrrrro);
+    mem::discriminant(*rrrrro);
+
     // ok
     mem::discriminant(&Some(2));
     mem::discriminant(&None::<u8>);
     mem::discriminant(&Foo::One(5));
     mem::discriminant(&Foo::Two(5));
     mem::discriminant(ro);
+    mem::discriminant(*rro);
+    mem::discriminant(****rrrrro);
 }
diff --git a/tests/ui/mem_discriminant.stderr b/tests/ui/mem_discriminant.stderr
index 57e03013392..6414e4c96d6 100644
--- a/tests/ui/mem_discriminant.stderr
+++ b/tests/ui/mem_discriminant.stderr
@@ -84,5 +84,21 @@ error: calling `mem::discriminant` on non-enum type `&&std::option::Option<i32>`
    |     |                                help: try dereferencing: `*rro`
    |     in this macro invocation
 
-error: aborting due to 10 previous errors
+error: calling `mem::discriminant` on non-enum type `&&&&&std::option::Option<i32>`
+  --> $DIR/mem_discriminant.rs:44:5
+   |
+44 |     mem::discriminant(&rrrrro);
+   |     ^^^^^^^^^^^^^^^^^^-------^
+   |                       |
+   |                       help: try dereferencing: `****rrrrro`
+
+error: calling `mem::discriminant` on non-enum type `&&&std::option::Option<i32>`
+  --> $DIR/mem_discriminant.rs:45:5
+   |
+45 |     mem::discriminant(*rrrrro);
+   |     ^^^^^^^^^^^^^^^^^^-------^
+   |                       |
+   |                       help: try dereferencing: `****rrrrro`
+
+error: aborting due to 12 previous errors