a500a43367
Tweak invalid RTN errors
Make suggestions verbose.
When encountering `method(type)` bound, suggest `method(..)` instead of `method()`.
```
error: argument types not allowed with return type notation
--> $DIR/bad-inputs-and-output.rs:9:23
|
LL | fn foo<T: Trait<method(i32): Send>>() {}
| ^^^^^
|
help: remove the input types
|
LL - fn foo<T: Trait<method(i32): Send>>() {}
LL + fn foo<T: Trait<method(..): Send>>() {}
|
```
When encountering both return type and arg list that isn't `..`, suggest replacing both.
```
error: return type not allowed with return type notation
--> $DIR/bad-inputs-and-output.rs:12:25
|
LL | fn bar<T: Trait<method() -> (): Send>>() {}
| ^^^^^^
|
help: use the right argument notation and remove the return type
|
LL - fn bar<T: Trait<method() -> (): Send>>() {}
LL + fn bar<T: Trait<method(..): Send>>() {}
|
```
When encountering a return type, suggest removing it including the leading whitespace.
```
error: return type not allowed with return type notation
--> $DIR/bad-inputs-and-output.rs:24:45
|
LL | fn bay_path<T: Trait>() where T::method(..) -> (): Send {}
| ^^^^^
|
help: remove the return type
|
LL - fn bay_path<T: Trait>() where T::method(..) -> (): Send {}
LL + fn bay_path<T: Trait>() where T::method(..): Send {}
|
```
r? ``@compiler-errors``
UI Tests
This folder contains rustc's
UI tests.
Test Directives (Headers)
Typically, a UI test will have some test directives / headers which are special comments that tell compiletest how to build and interpret a test.
As part of an ongoing effort to rewrite compiletest
(see https://github.com/rust-lang/compiler-team/issues/536), a major
change proposal to change legacy compiletest-style headers // <directive>
to ui_test-style headers
//@ <directive> was accepted (see
https://github.com/rust-lang/compiler-team/issues/512.
An example directive is ignore-test. In legacy compiletest style, the header
would be written as
// ignore-test
but in ui_test style, the header would be written as
//@ ignore-test
compiletest is changed to accept only //@ directives for UI tests
(currently), and will reject and report an error if it encounters any
comments // <content> that may be parsed as a legacy compiletest-style
test header. To fix this, you should migrate to the ui_test-style header
//@ <content>.