Files
rust/tests/ui
Matthias Krüger e5b9d93579 Rollup merge of #130787 - compiler-errors:next-solver-gce, r=BoxyUwU
Ban combination of GCE and new solver

These do not work together. I don't want anyone to have the impression that they do.

I reused the conflicting features diagnostic but I guess I could make it more tailored to the new solver? OTOH I don't really about the presentation of diagnostics here; these are nightly features after all.

r? `@BoxyUwU` thoughts on this?
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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>.