1 files changed, 21 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/issue_4031.rs b/src/tools/rustfmt/tests/target/issue_4031.rs
new file mode 100644
index 000000000..065d5395c
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/issue_4031.rs
@@ -0,0 +1,21 @@
+fn foo() {
+    with_woff2_glyf_table("tests/fonts/woff2/SFNT-TTF-Composite.woff2", |glyf| {
+        let actual = glyf
+            .records
+            .iter()
+            .map(|glyph| match glyph {
+                GlyfRecord::Parsed(
+                    found @ Glyph {
+                        data: GlyphData::Composite { .. },
+                        ..
+                    },
+                ) => Some(found),
+                _ => None,
+            })
+            .find(|candidate| candidate.is_some())
+            .unwrap()
+            .unwrap();
+
+        assert_eq!(*actual, expected)
+    });
+}