Files
rust/tests/ui
bors ebd08d8ed5 Auto merge of #128634 - matthiaskrgr:rollup-l5a2v5k, r=matthiaskrgr
Rollup of 7 pull requests

Successful merges:

 - #128305 (improve error message when `global_asm!` uses `asm!` operands)
 - #128526 (time.rs: remove "Basic usage text")
 - #128531 (Miri: add a flag to do recursive validity checking)
 - #128578 (rustdoc: Cleanup `CacheBuilder` code for building search index)
 - #128589 (allow setting `link-shared` and `static-libstdcpp` with CI LLVM)
 - #128615 (rustdoc: make the hover trail for doc anchors a bit bigger)
 - #128620 (Update rinja version to 0.3.0)

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>.