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// 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() {}
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