Files
rust/tests/ui
Matthias Krüger ee940f87fc Rollup merge of #122523 - compiler-errors:ensure-associated-types, r=oli-obk
Ensure RPITITs are created before def-id freezing

From the test:

```rust
// `ty::Error` in a trait ref will silence any missing item errors, but will also
// prevent the `associated_items` query from being called before def ids are frozen.
```

Essentially, the code that checks that `impl`s have all their items (`check_impl_items_against_trait`) is also (implicitly) responsible for fetching the `associated_items` query before, but since we early return here:
https://github.com/rust-lang/rust/blob/c2901f543577af99b9cb708f5c0d28525eb7f08f/compiler/rustc_hir_analysis/src/check/check.rs#L732-L737
...that means that this never happens for trait refs that reference errors.

Fixes #122518
r? oli-obk
2024-03-15 10:14:55 +01:00
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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>.