message: build: Enable -Wc++20-extensions on clang builds.
diff: @@ -48,7 +48,7 @@ def envoy_copts(repository, test = False):
  repository + "//bazel:windows_fastbuild_build": [],
  repository + "//bazel:windows_dbg_build": [],
  }) + select({
  - repository + "//bazel:clang_build": ["-fno-limit-debug-info", "-Wgnu-conditional-omitted-operand"],
  + repository + "//bazel:clang_build": ["-fno-limit-debug-info", "-Wgnu-conditional-omitted-operand", "-Wc++20-extensions"],
  repository + "//bazel:gcc_build": ["-Wno-maybe-uninitialized"],
  "//conditions:default": [],
  }) + select({
  