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//@ edition:2018
fn main() {}
fn a_function() -> u32 {
let x: Option<u32> = None;
x?; //~ ERROR the `?` operator
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}
fn a_closure() -> u32 {
let a_closure = || {
let x: Option<u32> = None;
x?; //~ ERROR the `?` operator
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};
a_closure()
}
fn a_method() -> u32 {
struct S;
impl S {
fn a_method() {
let x: Option<u32> = None;
x?; //~ ERROR the `?` operator
}
}
S::a_method();
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}
fn a_trait_method() -> u32 {
struct S;
trait T {
fn a_trait_method() {
let x: Option<u32> = None;
x?; //~ ERROR the `?` operator
}
}
impl T for S { }
S::a_trait_method();
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}
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