| #![feature(nll)] |
| |
| // Check that we assert that pointers have a common subtype for comparisons |
| |
| fn compare_const<'a, 'b>(x: *const &mut &'a i32, y: *const &mut &'b i32) { |
| x == y; |
| //~^ ERROR lifetime may not live long enough |
| //~| ERROR lifetime may not live long enough |
| } |
| |
| fn compare_mut<'a, 'b>(x: *mut &'a i32, y: *mut &'b i32) { |
| x == y; |
| //~^ ERROR lifetime may not live long enough |
| //~| ERROR lifetime may not live long enough |
| } |
| |
| fn compare_fn_ptr<'a, 'b, 'c>(f: fn(&'c mut &'a i32), g: fn(&'c mut &'b i32)) { |
| f == g; |
| //~^ ERROR lifetime may not live long enough |
| //~| ERROR lifetime may not live long enough |
| } |
| |
| fn compare_hr_fn_ptr<'a>(f: fn(&'a i32), g: fn(&i32)) { |
| // Ideally this should compile with the operands swapped as well, but HIR |
| // type checking prevents it (and stops compilation) for now. |
| f == g; // OK |
| } |
| |
| fn compare_const_fn_ptr<'a>(f: *const fn(&'a i32), g: *const fn(&i32)) { |
| f == g; // OK |
| } |
| |
| fn main() {} |