| //@ compile-flags: -O | |
| // A drop([...].clone()) sequence on an Rc should be a no-op | |
| // In particular, no call to __rust_dealloc should be emitted | |
| #![crate_type = "lib"] | |
| use std::rc::Rc; | |
| pub fn foo(t: &Rc<Vec<usize>>) { | |
| // CHECK-NOT: __rust_dealloc | |
| drop(t.clone()); | |
| } |