rust/tests/ui/codemap_tests, branch stable

expand: Micro-optimize prelude injection

2025-07-28T14:35:09+00:00

Use `splice` to avoid shifting the other items twice. Put `extern crate std;` first so it's already resolved when we resolve `::std::prelude::rust_20XX`.

Move more tests/ui tests

2025-05-12T14:35:09+00:00

Rollup merge of #139967 - jieyouxu:auxiliary, r=wesleywiser

2025-04-17T19:53:25+00:00

Introduce and use specialized `//@ ignore-auxiliary` for test support files instead of using `//@ ignore-test` ### Summary Add a semantically meaningful directive for ignoring test *auxiliary* files. This is for auxiliary files that *participate* in actual tests but should not be built by `compiletest` (i.e. these files are involved through `mod xxx;` or `include!()` or `#[path = "xxx"]`, etc.). ### Motivation A specialized directive like `//@ ignore-auxiliary` makes it way easier to audit disabled tests via `//@ ignore-test`. - These support files cannot use the canonical `auxiliary/` dir because they participate in module resolution or are included, or their relative paths can be important for test intention otherwise. Follow-up to: - #139705 - #139783 - #139740 See also discussions in: - [#t-compiler > Directive name for non-test aux files?](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Directive.20name.20for.20non-test.20aux.20files.3F/with/512773817) - [#t-compiler > Handling disabled `//@ ignore-test` tests](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Handling.20disabled.20.60.2F.2F.40.20ignore-test.60.20tests/with/512005974) - [#t-compiler/meetings > [steering] 2025-04-11 Dealing with disabled tests](https://rust-lang.zulipchat.com/#narrow/channel/238009-t-compiler.2Fmeetings/topic/.5Bsteering.5D.202025-04-11.20Dealing.20with.20disabled.20tests/with/511717981) ### Remarks on remaining unconditionally disabled tests under `tests/` After this PR, against commit 79a272c6402, only **14** remaining test files are disabled through `//@ ignore-test`:

Remaining `//@ ignore-test` files under `tests/`

``` tests/debuginfo/drop-locations.rs 4://@ ignore-test (broken, see #128971) tests/rustdoc/macro-document-private-duplicate.rs 1://@ ignore-test (fails spuriously, see issue #89228) tests/rustdoc/inline_cross/assoc-const-equality.rs 3://@ ignore-test (FIXME: #125092) tests/ui/match/issue-27021.rs 7://@ ignore-test (#54987) tests/ui/match/issue-26996.rs 7://@ ignore-test (#54987) tests/ui/issues/issue-49298.rs 9://@ ignore-test (#54987) tests/ui/issues/issue-59756.rs 2://@ ignore-test (rustfix needs multiple suggestions) tests/ui/precondition-checks/write.rs 5://@ ignore-test (unimplemented) tests/ui/precondition-checks/read.rs 5://@ ignore-test (unimplemented) tests/ui/precondition-checks/write_bytes.rs 5://@ ignore-test (unimplemented) tests/ui/explicit-tail-calls/drop-order.rs 2://@ ignore-test: tail calls are not implemented in rustc_codegen_ssa yet, so this causes 🧊 tests/ui/panics/panic-short-backtrace-windows-x86_64.rs 3://@ ignore-test (#92000) tests/ui/json/json-bom-plus-crlf-multifile-aux.rs 3://@ ignore-test Not a test. Used by other tests tests/ui/traits/next-solver/object-soundness-requires-generalization.rs 2://@ ignore-test (see #114196) ```

Of these, most are either **unimplemented**, or **spurious**, or **known-broken**. The outstanding one is `tests/ui/json/json-bom-plus-crlf-multifile-aux.rs` which I did not want to touch in *this* PR -- that aux file has load-bearing BOM and carriage returns and byte offset matters. I think those test files that require special encoding / BOM probably are better off as `run-make` tests. See #139968 for that aux file. ### Review advice - Best reviewed commit-by-commit. - The directive name diverged from the most voted `//@ auxiliary` because I think that's easy to confuse with `//@ aux-{crate,dir}`. r? compiler

tests: use `//@ ignore-auxiliary` with backlinked primary test file

2025-04-17T11:45:28+00:00

Explicitly annotate edition for `unpretty=expanded` and `unpretty=hir` tests

2025-04-16T09:10:10+00:00

These emit prelude imports which means they are always edition dependent

Remove attribute `#[rustc_error]`

2025-03-29T22:32:21+00:00

Do not suggest using `-Zmacro-backtrace` for builtin macros

2025-03-14T19:50:03+00:00

For macros that are implemented on the compiler, we do *not* mention the `-Zmacro-backtrace` flag. This includes `derive`s and standard macros.

Refactor `emitter` to better account for unicode chars when trimming

2025-03-07T17:55:08+00:00

Change the way that underline positions are calculated by delaying using the "visual" column position until the last possible moment, instead using the "file"/byte position in the file, and then calculating visual positioning as late as possible. This should make the underlines more resilient to non-1-width unicode chars. Unfortunately, as part of this change (which fixes some visual bugs) comes with the loss of some eager tab codepoint handling, but the output remains legible despite some minor regression on the "margin trimming" logic.

Show diff suggestion format on verbose replacement

2025-02-10T20:21:39+00:00

``` error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields --> $DIR/attempted-access-non-fatal.rs:7:15 | LL | let _ = 2.l; | ^ | help: if intended to be a floating point literal, consider adding a `0` after the period and a `f64` suffix | LL - let _ = 2.l; LL + let _ = 2.0f64; | ```

Filter empty lines, comments and delimiters from previous to last multiline span rendering

2024-12-12T23:36:27+00:00