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fuchsia/third_party/rust/7b2bfa361e74c0c0b34bfe3c52e696d8bc6d4330
commit
7b2bfa361e74c0c0b34bfe3c52e696d8bc6d4330
[log]
author
Guillaume Gomez <guillaume1.gomez@gmail.com>
Tue Sep 02 17:08:54 2025 +0200
committer
GitHub <noreply@github.com>
Tue Sep 02 17:08:54 2025 +0200
tree
2df1fbc1d75d6bc950b15ff569908801303b5d9f
parent
5d855c6b9e72d1dd55bfcb0d86e80116bc3c0272 [diff]
parent
f6e7c81061c24a2210149ff94670d8672bd0224a [diff]
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.
tree: 2df1fbc1d75d6bc950b15ff569908801303b5d9f
  1. .github/
  2. compiler/
  3. library/
  4. LICENSES/
  5. src/
  6. tests/
  7. .clang-format
  8. .editorconfig
  9. .git-blame-ignore-revs
  10. .gitattributes
  11. .gitignore
  12. .gitmodules
  13. .ignore
  14. .mailmap
  15. bootstrap.example.toml
  16. Cargo.lock
  17. Cargo.toml
  18. CODE_OF_CONDUCT.md
  19. configure
  20. CONTRIBUTING.md
  21. COPYRIGHT
  22. INSTALL.md
  23. LICENSE-APACHE
  24. license-metadata.json
  25. LICENSE-MIT
  26. package-lock.json
  27. package.json
  28. README.md
  29. RELEASES.md
  30. REUSE.toml
  31. rust-bors.toml
  32. rustfmt.toml
  33. triagebot.toml
  34. typos.toml
  35. x
  36. x.ps1
  37. x.py
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