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Guillaume Gomez 7b2bfa361e
Rollup merge of #146064 - jullanggit:patch-1, r=fmease 
Add compiler error when trying to use concat metavar expr in repetitions

## Disclaimer
This is my first PR to rust, so if I missed/could improve something about this PR, please excuse and tell me!
## The improvement
The [metavar_expr_concat feature](https://github.com/rust-lang/rust/issues/124225) currently does not seem to support nested repetitions, and throws an ICE without much explanation if the relevant code path is hit.
This PR adds a draft compiler error that attempts to explain the issue. I am not 100% sure what all the ways of triggering this error are, so the message is currently pretty generic, please do correct me if there's something wrong with it or it could be improved.

Thank you for you time!

Fixes rust-lang/rust#140479.
2025-09-02 17:08:54 +02:00
..
assembly-llvm Auto merge of #123319 - no92:managarm-target, r=davidtwco 2025-08-30 07:59:16 +00:00
auxiliary Set NumRegisterParameters LLVM module flag to N when -Zregparm=N is 2025-08-13 17:37:30 +02:00
codegen-llvm Rollup merge of #144066 - RalfJung:extern-c-variadics, r=workingjubilee 2025-09-02 17:08:52 +02:00
codegen-units pub async fn implementation coroutine (func::{closure#0}) is monomorphized, when func itself is monomorphized 2025-09-01 13:45:00 +07:00
coverage Auto merge of #143290 - azhogin:azhogin/link-pub-async-impls, r=oli-obk 2025-09-01 10:54:40 +00:00
coverage-run-rustdoc
crashes Add compiler error when trying to use concat metavar expr in repetitions 2025-09-01 08:27:30 +02:00
debuginfo tests: Ignore basic-stepping.rs on riscv64 2025-08-29 08:11:48 +00:00
incremental Bless incremental tests. 2025-07-13 13:50:01 +00:00
mir-opt Auto merge of #144783 - folkertdev:loop-match-diverging-loop, r=SparrowLii 2025-09-01 14:42:07 +00:00
pretty Update autodiff tests for the new intrinsics impl 2025-08-14 18:33:43 +00:00
run-make turn pointer width into an integer in target.json 2025-08-27 23:44:49 +02:00
rustdoc Add tests for doc(attribute = "...") attribute 2025-08-28 15:56:30 +02:00
rustdoc-gui Add tests for doc(attribute = "...") attribute 2025-08-28 15:56:30 +02:00
rustdoc-js rustdoc: add tests for raw pointers in type-based search 2025-08-21 17:50:12 -05:00
rustdoc-js-std tests/rustdoc-js-std/parser-errors.js: remove syntax that is now valid 2025-08-21 20:50:33 -05:00
rustdoc-json Add tests for doc(attribute = "...") attribute 2025-08-28 15:56:30 +02:00
rustdoc-ui Add ui test for unsupported doc(attribute = "...") case for attributes with namespace 2025-08-28 18:24:58 +02:00
ui Rollup merge of #146064 - jullanggit:patch-1, r=fmease 2025-09-02 17:08:54 +02:00
ui-fulldeps Switch next solver to use a specific associated type for trait def id 2025-08-25 16:52:08 +03:00
COMPILER_TESTS.md