Fixes these being treated as "tests" by `cargo test` in serde_derive:
running 3 tests
test src/internals/check.rs - internals::check::check_remote_generic (line 23) ... FAILED
test src/internals/check.rs - internals::check::check_remote_generic (line 29) ... FAILED
test src/lib.rs - (line 3) ... ok
failures:
---- src/internals/check.rs - internals::check::check_remote_generic (line 23) stdout ----
error: unknown start of token: \u{2026}
--> src/internals/check.rs:25:20
|
4 | struct Generic<T> {…}
| ^
error: cannot find attribute `serde` in this scope
--> src/internals/check.rs:24:3
|
3 | #[serde(remote = "Generic")]
| ^^^^^
|
= note: `serde` is in scope, but it is a crate, not an attribute
error[E0392]: parameter `T` is never used
--> src/internals/check.rs:25:16
|
4 | struct Generic<T> {…}
| ^ unused parameter
|
= help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData`
= help: if you intended `T` to be a const parameter, use `const T: usize` instead
---- src/internals/check.rs - internals::check::check_remote_generic (line 29) stdout ----
error: unknown start of token: \u{2026}
--> src/internals/check.rs:31:21
|
4 | struct ConcreteDef {…}
| ^
error: cannot find attribute `serde` in this scope
--> src/internals/check.rs:30:3
|
3 | #[serde(remote = "Generic<T>")]
| ^^^^^
|
= note: `serde` is in scope, but it is a crate, not an attribute
rustc will start looking behind `#[cfg(FALSE)]` items to start giving
better diagnostics. By using an explicit re-export instead of a glob
export, we tell rustc that `Deserialize` and `Serialize` exist here.
This works just fine if we make syn parse "where " as a syn::WhereClause.
The serde(bound = "") attribute is definitely not common enough that it
would warrant a micro-optimization.
Without serde(bound = ""), serde_derive infers a bound of `T: Serialize`
for the generated Serialize impl and `T: Deserialize<'de> + Default` for
the Deserialize impl. `X` implements none of these so the generated code
would fail to compile.
error[E0277]: the trait bound `X: Serialize` is not satisfied
--> test_suite/tests/test_gen.rs:268:14
|
268 | assert::<PhantomDataWrapper<X>>();
| ^^^^^^^^^^^^^^^^^^^^^ the trait `Serialize` is not implemented for `X`
|
= help: the following other types implement trait `Serialize`:
&'a T
&'a mut T
()
(T0, T1)
(T0, T1, T2)
(T0, T1, T2, T3)
(T0, T1, T2, T3, T4)
(T0, T1, T2, T3, T4, T5)
and 248 others
note: required for `PhantomDataWrapper<X>` to implement `Serialize`
--> test_suite/tests/test_gen.rs:262:14
|
262 | #[derive(Serialize, Deserialize)]
| ^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
263 | //#[serde(bound = "")]
264 | struct PhantomDataWrapper<T> {
| ^^^^^^^^^^^^^^^^^^^^^
note: required by a bound in `assert`
--> test_suite/tests/test_gen.rs:767:14
|
767 | fn assert<T: Serialize + DeserializeOwned>() {}
| ^^^^^^^^^ required by this bound in `assert`
= note: this error originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `X: Deserialize<'_>` is not satisfied
--> test_suite/tests/test_gen.rs:268:14
|
268 | assert::<PhantomDataWrapper<X>>();
| ^^^^^^^^^^^^^^^^^^^^^ the trait `Deserialize<'_>` is not implemented for `X`
|
= help: the following other types implement trait `Deserialize<'de>`:
<&'a Path as Deserialize<'de>>
<&'a [u8] as Deserialize<'de>>
<&'a str as Deserialize<'de>>
<() as Deserialize<'de>>
<(T0, T1) as Deserialize<'de>>
<(T0, T1, T2) as Deserialize<'de>>
<(T0, T1, T2, T3) as Deserialize<'de>>
<(T0, T1, T2, T3, T4) as Deserialize<'de>>
and 331 others
note: required for `PhantomDataWrapper<X>` to implement `for<'de> Deserialize<'de>`
--> test_suite/tests/test_gen.rs:262:25
|
262 | #[derive(Serialize, Deserialize)]
| ^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
263 | //#[serde(bound = "")]
264 | struct PhantomDataWrapper<T> {
| ^^^^^^^^^^^^^^^^^^^^^
= note: required for `PhantomDataWrapper<X>` to implement `DeserializeOwned`
note: required by a bound in `assert`
--> test_suite/tests/test_gen.rs:767:26
|
767 | fn assert<T: Serialize + DeserializeOwned>() {}
| ^^^^^^^^^^^^^^^^ required by this bound in `assert`
= note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0277]: the trait bound `X: Default` is not satisfied
--> test_suite/tests/test_gen.rs:268:14
|
268 | assert::<PhantomDataWrapper<X>>();
| ^^^^^^^^^^^^^^^^^^^^^ the trait `Default` is not implemented for `X`
|
note: required for `PhantomDataWrapper<X>` to implement `for<'de> Deserialize<'de>`
--> test_suite/tests/test_gen.rs:262:25
|
262 | #[derive(Serialize, Deserialize)]
| ^^^^^^^^^^^ unsatisfied trait bound introduced in this `derive` macro
263 | //#[serde(bound = "")]
264 | struct PhantomDataWrapper<T> {
| ^^^^^^^^^^^^^^^^^^^^^
= note: required for `PhantomDataWrapper<X>` to implement `DeserializeOwned`
note: required by a bound in `assert`
--> test_suite/tests/test_gen.rs:767:26
|
767 | fn assert<T: Serialize + DeserializeOwned>() {}
| ^^^^^^^^^^^^^^^^ required by this bound in `assert`
= note: this error originates in the derive macro `Deserialize` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider annotating `X` with `#[derive(Default)]`
|
779 | #[derive(Default)]
|
