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#![crate_type = "lib"]
//@ compile-flags: -Copt-level=3
use std::mem;
fn foo<T>(a: &mut T, b: T) -> bool {
let b = Some(mem::replace(a, b));
let ret = b.is_some();
mem::forget(b);
return ret;
}
// CHECK-LABEL: @foo_u32
// CHECK: store i32
// CHECK-NEXT: ret i1 true
#[no_mangle]
pub fn foo_u32(a: &mut u32, b: u32) -> bool {
foo(a, b)
}
// CHECK-LABEL: @foo_box
// CHECK: store ptr
// CHECK-NEXT: ret i1 true
#[no_mangle]
pub fn foo_box(a: &mut Box<u32>, b: Box<u32>) -> bool {
foo(a, b)
}
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