Files
rust/tests/ui
bors 5700240aff Auto merge of #132943 - matthiaskrgr:rollup-164l3ej, r=matthiaskrgr
Rollup of 8 pull requests

Successful merges:

 - #132651 (Remove attributes from generics in built-in derive macros)
 - #132668 (Feature gate yield expressions not in 2024)
 - #132771 (test(configure): cover `parse_args` in `src/bootstrap/configure.py`)
 - #132895 (Generalize `NonNull::from_raw_parts` per ACP362)
 - #132914 (Update grammar in std::cell docs.)
 - #132927 (Consolidate type system const evaluation under `traits::evaluate_const`)
 - #132935 (Make sure to ignore elided lifetimes when pointing at args for fulfillment errors)
 - #132941 (Subtree update of `rust-analyzer`)

r? `@ghost`
`@rustbot` modify labels: rollup
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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>.