// is_ok(), unwrap_or()
let _ = (0..).filter_map(|a| to_res(a).ok());
+
+ let _ = (1..5)
+ .filter_map(|y| *to_ref(to_opt(y)));
+ let _ = (1..5)
+ .filter_map(|y| *to_ref(to_opt(y)));
+
+ let _ = (1..5)
+ .filter_map(|y| to_ref(to_res(y)).ok());
+ let _ = (1..5)
+ .filter_map(|y| to_ref(to_res(y)).ok());
+}
+
+#[rustfmt::skip]
+fn simple_equal() {
+ iter::<Option<&u8>>().find_map(|x| x.cloned());
+ iter::<&Option<&u8>>().find_map(|x| x.cloned());
+ iter::<&Option<String>>().find_map(|x| x.as_deref());
+ iter::<Option<&String>>().find_map(|y| to_ref(y).cloned());
+
+ iter::<Result<u8, ()>>().find_map(|x| x.ok());
+ iter::<&Result<u8, ()>>().find_map(|x| x.ok());
+ iter::<&&Result<u8, ()>>().find_map(|x| x.ok());
+ iter::<Result<&u8, ()>>().find_map(|x| x.cloned().ok());
+ iter::<&Result<&u8, ()>>().find_map(|x| x.cloned().ok());
+ iter::<&Result<String, ()>>().find_map(|x| x.as_deref().ok());
+ iter::<Result<&String, ()>>().find_map(|y| to_ref(y).cloned().ok());
}
fn no_lint() {
.map(|a| to_opt(a).unwrap());
}
+fn iter<T>() -> impl Iterator<Item = T> {
+ std::iter::empty()
+}
+
fn to_opt<T>(_: T) -> Option<T> {
unimplemented!()
}
unimplemented!()
}
+fn to_ref<'a, T>(_: T) -> &'a T {
+ unimplemented!()
+}
+
struct Issue8920<'a> {
option_field: Option<String>,
result_field: Result<String, ()>,