1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/return/issue-82612-return-mutable-reference.stderr b/src/test/ui/return/issue-82612-return-mutable-reference.stderr
new file mode 100644
index 000000000..eb2322d51
--- /dev/null
+++ b/src/test/ui/return/issue-82612-return-mutable-reference.stderr
@@ -0,0 +1,28 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-82612-return-mutable-reference.rs:18:13
+   |
+LL | /         if index < self.values.len() {
+LL | |             let value = unsafe { self.values.get_unchecked_mut(index) };
+LL | |             value.get_or_insert_with(func)
+   | |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `&mut V`
+LL | |         }
+   | |_________- expected this to be `()`
+   |
+   = note:      expected unit type `()`
+           found mutable reference `&mut V`
+help: consider using a semicolon here
+   |
+LL |             value.get_or_insert_with(func);
+   |                                           +
+help: consider using a semicolon here
+   |
+LL |         };
+   |          +
+help: you might have meant to return this value
+   |
+LL |             return value.get_or_insert_with(func);
+   |             ++++++                               +
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.