Cannot use where clauses in a tuple struct

[gamma-delta]

I tried this code:

trait MyTrait {}

struct Foo<T> where T: MyTrait, (T)

I expected to see this happen: It compiles and requires T to implement MyTrait

Instead, this happened: It doesn't compile

Meta

rustc --version --verbose:

rustc 1.67.0-nightly (83356b78c 2022-11-17)
binary: rustc
commit-hash: 83356b78c4ff3e7d84e977aa6143793545967301
commit-date: 2022-11-17
host: x86_64-unknown-linux-gnu
release: 1.67.0-nightly
LLVM version: 15.0.4

"Backtrace" (compiler error)

error: expected one of `:`, `==`, or `=`, found `;`
 --> src/lib.rs:3:36
  |
3 | struct Foo<T> where T: MyTrait, (T);
  |                                    ^ expected one of `:`, `==`, or `=`

Playground Link

[clubby789]

The correct syntax for this is struct Foo<T>(T) where T: MyTrait;

[fmease]

A-diagnostics

Duplicate of #100790.

@rustbot claim

[gamma-delta]

Can I just say this is one of the reasons I love the Rust project? Instead of getting some blunt "you're doing it wrong" you take the time to understand why I'm doing it wrong, and how to fix it for everyone. :)

[gamma-delta]

(Oh, I guess I should close this then if it's a duplicate)