rust/tests/ui/unboxed-closures/unboxed-closure-sugar-used-on-struct.rs

// Test that parentheses form doesn't work with struct types appearing in argument types.

struct Bar<A> {
    f: A
}

fn foo(b: Box<Bar()>) {
    //~^ ERROR parenthesized type parameters may only be used with a `Fn` trait
    //~| ERROR struct takes 1 generic argument but 0 generic arguments
}

fn main() { }
Add some tests for obsolete code, sugar used in appropriate ways. 2014-11-27 11:59:21 +00:00			`// Test that parentheses form doesn't work with struct types appearing in argument types.`

Update test files; mostly the problem is that they were using the explicit form `Fn<A,B>` and now should use `Fn(A) -> B` or `Fn<A,Output=B>`, but in some cases we get duplicate error reports. This is mildly annoying and arises because of the main error and another error from the projection. Might be worth squashing those, but seems like a separate problem. 2015-01-12 15:27:25 +00:00			`struct Bar<A> {`
			`f: A`
Add some tests for obsolete code, sugar used in appropriate ways. 2014-11-27 11:59:21 +00:00			`}`

			`fn foo(b: Box<Bar()>) {`
Do not suggest angle brackets when there are no type arguments 2019-01-20 10:45:38 +00:00			//~^ ERROR parenthesized type parameters may only be used with a `Fn` trait
diagnostics: remove inconsistent English article "this" from E0107 Consider `tests/ui/const-generics/generic_const_exprs/issue-102768.stderr`, the error message where it gives additional notes about where the associated type is defined, and how the dead code lint doesn't have an article, like in `tests/ui/lint/dead-code/issue-85255.stderr`. They don't have articles, so it seems unnecessary to have one here. 2023-02-23 17:27:06 +00:00			`//~\| ERROR struct takes 1 generic argument but 0 generic arguments`
Add some tests for obsolete code, sugar used in appropriate ways. 2014-11-27 11:59:21 +00:00			`}`

			`fn main() { }`