Fixes are needed to compile using Slackware's llvm 22.x after these
llvm 23.x syntax elements were added:
clang++: error: unknown argument: '-fdiagnostics-show-inlining-chain'
clang++: error: unknown argument: '-fsanitize-ignore-for-ubsan-feature=array-bounds'


--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -590,7 +590,7 @@ config("compiler") {
     # Flags for diagnostics.
     cflags += [ "-fcolor-diagnostics" ]
     if (!is_win) {
-      cflags += [ "-fdiagnostics-show-inlining-chain" ]
+      cflags += [  ]
     } else {
       # Combine after https://github.com/llvm/llvm-project/pull/192241
       cflags += [ "/clang:-fdiagnostics-show-inlining-chain" ]
--- a/build/config/sanitizers/sanitizers.gni
+++ b/build/config/sanitizers/sanitizers.gni
@@ -540,7 +540,6 @@ template("ubsan_hardening") {
         # be usable even in release builds, i.e. as widely as possible.
         # It's important not to have full-on UBSan workarounds activate
         # just because we built support for a specific sanitizer.
-        "-fsanitize-ignore-for-ubsan-feature=${invoker.sanitizer}",
       ]
       if (defined(invoker.cflags)) {
         cflags += invoker.cflags