[all-commits] [llvm/llvm-project] 2176c5: [Clang][Sema] Fix display of characters on static ...

[Takuya Shimizu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2176c5e510e3bfcbc75afb13e78d287141f239a7
      https://github.com/llvm/llvm-project/commit/2176c5e510e3bfcbc75afb13e78d287141f239a7
  Author: Takuya Shimizu <shimizu2486 at gmail.com>
  Date:   2023-10-04 (Wed, 04 Oct 2023)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/include/clang/Basic/Diagnostic.h
    M clang/lib/Basic/Diagnostic.cpp
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/test/Lexer/cxx1z-trigraphs.cpp
    M clang/test/SemaCXX/static-assert-cxx26.cpp
    M clang/test/SemaCXX/static-assert.cpp

  Log Message:
  -----------
  [Clang][Sema] Fix display of characters on static assertion failure

This patch fixes the display of characters appearing in LHS or RHS of == expression in notes to static assertion failure.
This applies C-style escape if the printed character is a special character. This also adds a numerical value displayed next to the character representation.
This also tries to print multi-byte characters if the user-provided expression is multi-byte char type.

Reviewed By: cor3ntin
Differential Revision: https://reviews.llvm.org/D155610