Files
rust/tests/ui
Matthias Krüger f19cb0b294 Rollup merge of #127711 - BoxyUwU:add_effects_test, r=fee1-dead
Add regression test for a gce + effects ICE

Fixes #125770

I'm not *exactly* sure why this stopped ICEing, I assume its something to do with the fact that there used to be a generic parameter on `Add` for the host generic and we have mismatched args here, which #125608 made no longer later cause issues. But now the desugaring is also different so? 🤷‍♀️

r? `@fee1-dead`
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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>.