Files
rust/tests/ui
bors 756bff97ea Auto merge of #138841 - matthiaskrgr:rollup-bfkls57, r=matthiaskrgr
Rollup of 8 pull requests

Successful merges:

 - #138018 (rustdoc: Use own logic to print `#[repr(..)]` attributes in JSON output.)
 - #138294 (Mark some std tests as requiring `panic = "unwind"`)
 - #138468 (rustdoc js: add nonnull helper and typecheck src-script.js)
 - #138675 (Add release notes for 1.85.1)
 - #138765 (Fix Thread::set_name on cygwin)
 - #138786 (Move some driver code around)
 - #138793 (target spec check: better error when llvm-floatabi is missing)
 - #138822 (De-Stabilize `file_lock`)

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>.