[gn build] Port 5baa4ee30b5c

diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index 02437cc..6ff9b96 100644 (file)
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -203,6 +203,7 @@ if (current_toolchain == default_toolchain) {
       "__format/format_fwd.h",
       "__format/format_parse_context.h",
       "__format/format_string.h",
+      "__format/format_to_n_result.h",
       "__format/formatter.h",
       "__format/formatter_bool.h",
       "__format/formatter_char.h",