3b0221bf63
Fix ICE caused by missing span in a region error Fixes #130012 The ICE occurs on line 634 in this error handling code:085744b7ad/compiler/rustc_trait_selection/src/error_reporting/infer/region.rs (L617-L637)It is caused by the span being a dummy span and `!span.is_dummy()` on line 628 evaluating to `false`. A dummy span, however, is expected here thanks to the `Self: Trait` predicate from `predicates_of` (see line 61):085744b7ad/compiler/rustc_hir_analysis/src/collect/predicates_of.rs (L61-L69)This PR changes the error handling code to omit the note which needed the span instead of ICE'ing in the presence of a dummy span.
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>.