1 files changed, 52 insertions, 0 deletions
diff --git a/src/test/ui/argument-suggestions/issue-100478.rs b/src/test/ui/argument-suggestions/issue-100478.rs
new file mode 100644
index 000000000..6bef6ad10
--- /dev/null
+++ b/src/test/ui/argument-suggestions/issue-100478.rs
@@ -0,0 +1,52 @@
+use std::sync::Arc;
+macro_rules! GenT {
+    ($name:tt) => {
+        #[derive(Default, Debug)]
+        struct $name {
+            #[allow(unused)]
+            val: i32,
+        }
+
+        impl $name {
+            #[allow(unused)]
+            fn new(val: i32) -> Self {
+                $name { val }
+            }
+        }
+    };
+}
+
+GenT!(T1);
+GenT!(T2);
+GenT!(T3);
+GenT!(T4);
+GenT!(T5);
+GenT!(T6);
+GenT!(T7);
+GenT!(T8);
+
+#[allow(unused)]
+fn foo(p1: T1, p2: Arc<T2>, p3: T3, p4: Arc<T4>, p5: T5, p6: T6, p7: T7, p8: Arc<T8>) {}
+fn three_diff(_a: T1, _b: T2, _c: T3) {}
+fn four_shuffle(_a: T1, _b: T2, _c: T3, _d: T4) {}
+
+fn main() {
+    three_diff(T2::new(0)); //~ ERROR this function takes
+    four_shuffle(T3::default(), T4::default(), T1::default(), T2::default()); //~ ERROR 35:5: 35:17: arguments to this function are incorrect [E0308]
+    four_shuffle(T3::default(), T2::default(), T1::default(), T3::default()); //~ ERROR 36:5: 36:17: arguments to this function are incorrect [E0308]
+
+    let p1 = T1::new(0);
+    let p2 = Arc::new(T2::new(0));
+    let p3 = T3::new(0);
+    let p4 = Arc::new(T4::new(1));
+    let p5 = T5::new(0);
+    let p6 = T6::new(0);
+    let p7 = T7::new(0);
+    let p8 = Arc::default();
+
+    foo(
+        //~^ 47:5: 47:8: this function takes 8 arguments but 7 arguments were supplied [E0061]
+        p1, //p2,
+        p3, p4, p5, p6, p7, p8,
+    );
+}