Files
rust/tests/ui
Matthias Krüger 4e68d06b52 Rollup merge of #130412 - compiler-errors:rpitit-overcapture, r=jieyouxu
Don't ICE when RPITIT captures more method args than trait definition

Make sure we don't ICE when an RPITIT captures more method args than the trait definition, which is not allowed. This was because we were using the wrong def id for error reporting.

Due to the default lifetime capture rules of RPITITs (capturing everything in scope), this is only doable if we use precise capturing, which isn't currently allowed for RPITITs anyways but we still end up reaching the relevant codepaths.

Fixes #129850
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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>.