Files
rust/tests/ui
bors 716752ebe6 Auto merge of #127133 - matthiaskrgr:rollup-jxkp3yf, r=matthiaskrgr
Rollup of 9 pull requests

Successful merges:

 - #123237 (Various rustc_codegen_ssa cleanups)
 - #126960 (Improve error message in tidy)
 - #127002 (Implement `x perf` as a separate tool)
 - #127081 (Add a run-make test that LLD is not being used by default on the x64 beta/stable channel)
 - #127106 (Improve unsafe extern blocks diagnostics)
 - #127110 (Fix a error suggestion for E0121 when using placeholder _ as return types on function signature.)
 - #127114 (fix: prefer `(*p).clone` to `p.clone` if the `p` is a raw pointer)
 - #127118 (Show `used attribute`'s kind for user when find it isn't applied to a `static` variable.)
 - #127122 (Remove uneccessary condition in `div_ceil`)

r? `@ghost`
`@rustbot` modify labels: rollup
2024-06-30 02:20:01 +00:00
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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>.