[all-commits] [llvm/llvm-project] bc8f4a: [NFC] [Support] Fix warning when build with clang-...

[Xiang Li via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bc8f4a1b0a843df8ff22bd06e455f2c74e30a226
      https://github.com/llvm/llvm-project/commit/bc8f4a1b0a843df8ff22bd06e455f2c74e30a226
  Author: Xiang Li <python3kgae at outlook.com>
  Date:   2023-09-12 (Tue, 12 Sep 2023)

  Changed paths:
    M llvm/lib/Support/regcomp.c

  Log Message:
  -----------
  [NFC] [Support] Fix warning when build with clang-cl on Windows. (#65387)

Add const qualifier to avoid warning "_cast from 'const char *' to 'char*' drops const qualifier [-Werror,-Wcast-qual]_"

This will allow enable LLVM_ENABLE_WERROR when build with clang-cl on Windows.
This is imported from https://github.com/openbsd/src/commit/b81763002452802e4f7304ea60f121253bd94

Also removed the gcc change for the cast-qual warning which is not needed with const qualifier added.