[gn] port d750c6d

Author: nico

llvm/utils/gn/secondary/libcxx/include/BUILD.gn

@@ -1192,6 +1192,7 @@ if (current_toolchain == default_toolchain) {
       "__locale_dir/time.h",
       "__locale_dir/wbuffer_convert.h",
       "__locale_dir/wstring_convert.h",
+      "__log_hardening_failure",
       "__math/abs.h",
       "__math/copysign.h",
       "__math/error_functions.h",

llvm/utils/gn/secondary/libcxx/src/BUILD.gn

@@ -317,7 +317,10 @@ if (libcxx_enable_experimental) {
   static_library("cxx_experimental") {
     output_dir = runtimes_dir
     output_name = "c++experimental"
-    sources = [ "experimental/keep.cpp" ]
+    sources = [
+      "experimental/keep.cpp",
+      "experimental/log_hardening_failure.cpp",
+    ]
     if (libcxx_enable_filesystem && libcxx_enable_time_zone_database) {
       sources += [
         # TODO TZDB The exception could be moved in chrono once the TZDB library