1 files changed, 8 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/issue_3934.rs b/src/tools/rustfmt/tests/target/issue_3934.rs
new file mode 100644
index 000000000..68f9fd0ae
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/issue_3934.rs
@@ -0,0 +1,8 @@
+mod repro {
+    pub fn push() -> Result<(), ()> {
+        self.api.map_api_result(|api| {
+            #[allow(deprecated)]
+            match api.apply_extrinsic_before_version_4_with_context()? {}
+        })
+    }
+}