From 8aaf4ab59aacdc910ea132dbb13a67c8d69a1607 Mon Sep 17 00:00:00 2001
From: Tomasz Miąsko <tomasz.miasko@gmail.com>
Date: Wed, 13 Oct 2021 00:00:00 +0000
Subject: Deduplicate regions ids before merging them

The merging code does not expect to see any duplicates.
---
 .../ui/inherent-impls-overlap-check/no-overlap.rs     | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

(limited to 'src')

diff --git a/src/test/ui/inherent-impls-overlap-check/no-overlap.rs b/src/test/ui/inherent-impls-overlap-check/no-overlap.rs
index 341bfc7b605..450e6d4202c 100644
--- a/src/test/ui/inherent-impls-overlap-check/no-overlap.rs
+++ b/src/test/ui/inherent-impls-overlap-check/no-overlap.rs
@@ -31,4 +31,23 @@ repeat::repeat_with_idents!(impl Bar<A> { fn IDENT() {} });
 impl Bar<A> { fn foo() {} }
 impl Bar<B> { fn foo() {} }
 
+// Regression test for issue #89820:
+
+impl Bar<u8> {
+    pub fn a() {}
+    pub fn aa() {}
+}
+
+impl Bar<u16> {
+    pub fn b() {}
+    pub fn bb() {}
+}
+
+impl Bar<u32> {
+    pub fn a() {}
+    pub fn aa() {}
+    pub fn bb() {}
+    pub fn b() {}
+}
+
 fn main() {}
-- 
cgit 1.4.1-3-g733a5