From 2a700d47f592a52ebc32ae41b67cd5da756a17d9 Mon Sep 17 00:00:00 2001
From: Michael Goulet <michael@errs.io>
Date: Thu, 16 Feb 2023 20:58:48 +0000
Subject: [PATCH] Add ICE test for bad Add::add impl item type

---
 tests/ui/lang-items/bad-add-impl.rs     | 18 ++++++++++++++++++
 tests/ui/lang-items/bad-add-impl.stderr | 11 +++++++++++
 2 files changed, 29 insertions(+)
 create mode 100644 tests/ui/lang-items/bad-add-impl.rs
 create mode 100644 tests/ui/lang-items/bad-add-impl.stderr

diff --git a/tests/ui/lang-items/bad-add-impl.rs b/tests/ui/lang-items/bad-add-impl.rs
new file mode 100644
index 00000000000..0c44edbe51a
--- /dev/null
+++ b/tests/ui/lang-items/bad-add-impl.rs
@@ -0,0 +1,18 @@
+#![feature(no_core)]
+#![feature(lang_items)]
+#![no_core]
+
+#[lang = "sized"]
+trait Sized {}
+
+#[lang = "add"]
+trait Add<T> {
+    const add: u32 = 1u32;
+}
+
+impl Add<u32> for u32 {}
+
+fn main() {
+    1u32 + 1u32;
+    //~^ ERROR cannot add `u32` to `u32`
+}
diff --git a/tests/ui/lang-items/bad-add-impl.stderr b/tests/ui/lang-items/bad-add-impl.stderr
new file mode 100644
index 00000000000..3143729f99b
--- /dev/null
+++ b/tests/ui/lang-items/bad-add-impl.stderr
@@ -0,0 +1,11 @@
+error[E0369]: cannot add `u32` to `u32`
+  --> $DIR/bad-add-impl.rs:16:10
+   |
+LL |     1u32 + 1u32;
+   |     ---- ^ ---- u32
+   |     |
+   |     u32
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0369`.