1 files changed, 30 insertions, 0 deletions
diff --git a/tests/ui/impl-trait/question_mark.rs b/tests/ui/impl-trait/question_mark.rs
new file mode 100644
index 000000000..7bd5cff31
--- /dev/null
+++ b/tests/ui/impl-trait/question_mark.rs
@@ -0,0 +1,30 @@
+// check-pass
+
+use std::fmt::Debug;
+
+#[derive(Debug)]
+pub struct Target;
+
+#[derive(Debug)]
+pub struct Source;
+impl From<Source> for Target {
+    fn from(_: Source) -> Self {
+        Self
+    }
+}
+
+fn maybe_source() -> Result<(), Source> {
+    todo!()
+}
+
+pub fn typaram() -> Result<(), impl Debug> {
+    maybe_source()?;
+    Ok::<_, Target>(())
+}
+
+pub fn direct() -> Result<(), impl Debug> {
+    maybe_source()?;
+    Err(Target)
+}
+
+fn main() {}