03d558f5b6
Clarify that anonymous consts still do introduce a new scope See https://github.com/rust-lang/rust/issues/120363#issuecomment-2177064702 This error message is misleading: it's trying to say that `const _ : () = ...` is a workaround for the lint, but by saying that anonymous constants are treated as being in the parent scope, it makes them appear useless for scope-hiding. They *are* useful for scope-hiding, they are simply treated as part of the parent scope when it comes to this lint.
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 intepret a test.
As part of an on-going 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 an legacy compiletest-style
test header. To fix this, you should migrate to the ui_test-style header
//@ <content>.