[PATCH] D156596: [Clang] Produce a warning instead of an error in unevaluated strings before C++26

[Hubert Tong via Phabricator via cfe-commits]

hubert.reinterpretcast added inline comments.


================
Comment at: clang/include/clang/Basic/DiagnosticLexKinds.td:290
+  "encoding prefix '%0' on an unevaluated string literal has no effect"
+  "%select{| and is incompatible with c++2c}1">,
+  InGroup<DiagGroup<"invalid-unevaluated-string">>;
----------------
I am not seeing any tests covering C mode.

@aaron.ballman, can you confirm that you are okay with the warning when processing C code (and, moreover, the newly-added errors for numeric escape sequences)?



Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156596/new/

https://reviews.llvm.org/D156596