[gn build] Port eb6e13cb3280

diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index ef58e32..8b9cf46 100644 (file)
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -388,6 +388,7 @@ if (current_toolchain == default_toolchain) {
       "__format/formatter_output.h",
       "__format/formatter_pointer.h",
       "__format/formatter_string.h",
+      "__format/formatter_tuple.h",
       "__format/parser_std_format_spec.h",
       "__format/range_default_formatter.h",
       "__format/unicode.h",