1 files changed, 64 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/fn-param-attributes.rs b/src/tools/rustfmt/tests/target/fn-param-attributes.rs
new file mode 100644
index 000000000..829575518
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/fn-param-attributes.rs
@@ -0,0 +1,64 @@
+// https://github.com/rust-lang/rustfmt/issues/3623
+
+fn foo(#[cfg(something)] x: i32, y: i32) -> i32 {
+    x + y
+}
+
+fn foo_b(#[cfg(something)] x: i32, y: i32) -> i32 {
+    x + y
+}
+
+fn add(
+    #[cfg(something)]
+    #[deny(C)]
+    x: i32,
+    y: i32,
+) -> i32 {
+    x + y
+}
+
+struct NamedSelfRefStruct {}
+impl NamedSelfRefStruct {
+    fn foo(#[cfg(something)] self: &Self) {}
+}
+
+struct MutStruct {}
+impl MutStruct {
+    fn foo(#[cfg(foo)] &mut self, #[deny(C)] b: i32) {}
+}
+
+fn main() {
+    let c = |#[allow(C)] a: u32,
+             #[cfg(something)] b: i32,
+             #[cfg_attr(something, cfg(nothing))]
+             #[deny(C)]
+             c: i32| {};
+    let _ = c(1, 2);
+}
+
+pub fn bar(
+    /// bar
+    #[test]
+    a: u32,
+    /// Bar
+    #[must_use]
+    /// Baz
+    #[no_mangle]
+    b: i32,
+) {
+}
+
+fn abc(
+    #[foo]
+    #[bar]
+    param: u32,
+) {
+    // ...
+}
+
+fn really_really_really_loooooooooooooooooooong(
+    #[cfg(some_even_longer_config_feature_that_keeps_going_and_going_and_going_forever_and_ever_and_ever_on_and_on)]
+    b: i32,
+) {
+    // ...
+}