Files
rust/tests/ui
bors 0b45675cfc Auto merge of #139169 - matthiaskrgr:rollup-nfy4aew, r=matthiaskrgr
Rollup of 6 pull requests

Successful merges:

 - #138176 (Prefer built-in sized impls (and only sized impls) for rigid types always)
 - #138749 (Fix closure recovery for missing block when return type is specified)
 - #138842 (Emit `unused_attributes` for `#[inline]` on exported functions)
 - #139153 (Encode synthetic by-move coroutine body with a different `DefPathData`)
 - #139157 (Remove mention of `exhaustive_patterns` from `never` docs)
 - #139167 (Remove Amanieu from the libs review rotation)

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 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>.