mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 01:04:03 +00:00
fbc121fdfd
Make `unused_allocation` lint against `Box::new` too
Previously it only linted against `box` syntax, which likely won't ever be stabilized, which is pretty useless. Even now I'm not sure if it's a meaningful lint, but it's at least something 🤷
This means that code like the following will be linted against:
```rust
Box::new([1, 2, 3]).len();
f(&Box::new(1)); // where f : &i32 -> ()
```
The lint works by checking if a `Box::new` (or `box`) expression has an a borrow adjustment, meaning that the code that first stores the box in a variable won't be linted against:
```rust
let boxed = Box::new([1, 2, 3]); // no lint
boxed.len();
```
|
||
---|---|---|
.. | ||
auxiliary | ||
elision | ||
arbitrary_self_types_nested.rs | ||
arbitrary_self_types_pin_lifetime_impl_trait-async.rs | ||
arbitrary_self_types_pin_lifetime_impl_trait-async.stderr | ||
arbitrary_self_types_pin_lifetime_impl_trait.rs | ||
arbitrary_self_types_pin_lifetime_impl_trait.stderr | ||
arbitrary_self_types_pin_lifetime_mismatch-async.rs | ||
arbitrary_self_types_pin_lifetime_mismatch-async.stderr | ||
arbitrary_self_types_pin_lifetime_mismatch.rs | ||
arbitrary_self_types_pin_lifetime_mismatch.stderr | ||
arbitrary_self_types_pin_lifetime-async.rs | ||
arbitrary_self_types_pin_lifetime.rs | ||
arbitrary_self_types_pointers_and_wrappers.rs | ||
arbitrary_self_types_raw_pointer_struct.rs | ||
arbitrary_self_types_raw_pointer_trait.rs | ||
arbitrary_self_types_silly.rs | ||
arbitrary_self_types_stdlib_pointers.rs | ||
arbitrary_self_types_struct.rs | ||
arbitrary_self_types_trait.rs | ||
arbitrary_self_types_unsized_struct.rs | ||
arbitrary-self-types-not-object-safe.curr.stderr | ||
arbitrary-self-types-not-object-safe.object_safe_for_dispatch.stderr | ||
arbitrary-self-types-not-object-safe.rs | ||
builtin-superkinds-self-type.rs | ||
by-value-self-in-mut-slot.rs | ||
class-missing-self.rs | ||
class-missing-self.stderr | ||
explicit_self_xcrate_exe.rs | ||
explicit-self-closures.rs | ||
explicit-self-generic.rs | ||
explicit-self-objects-uniq.rs | ||
explicit-self.rs | ||
issue-61882-2.rs | ||
issue-61882-2.stderr | ||
issue-61882.rs | ||
issue-61882.stderr | ||
move-self.rs | ||
object-safety-sized-self-by-value-self.rs | ||
object-safety-sized-self-generic-method.rs | ||
object-safety-sized-self-return-Self.rs | ||
objects-owned-object-owned-method.rs | ||
point-at-arbitrary-self-type-method.rs | ||
point-at-arbitrary-self-type-method.stderr | ||
point-at-arbitrary-self-type-trait-method.rs | ||
point-at-arbitrary-self-type-trait-method.stderr | ||
self_lifetime-async.rs | ||
self_lifetime.rs | ||
self_type_keyword-2.rs | ||
self_type_keyword-2.stderr | ||
self_type_keyword.rs | ||
self_type_keyword.stderr | ||
self-impl-2.rs | ||
self-impl.rs | ||
self-impl.stderr | ||
self-in-mut-slot-default-method.rs | ||
self-in-mut-slot-immediate-value.rs | ||
self-in-typedefs.rs | ||
self-infer.rs | ||
self-infer.stderr | ||
self-re-assign.rs | ||
self-shadowing-import.rs | ||
self-type-param.rs | ||
self-vs-path-ambiguity.rs | ||
self-vs-path-ambiguity.stderr | ||
string-self-append.rs | ||
suggest-self-2.rs | ||
suggest-self-2.stderr | ||
suggest-self.rs | ||
suggest-self.stderr | ||
ufcs-explicit-self.rs | ||
uniq-self-in-mut-slot.rs | ||
where-for-self.rs |