[gn build] Port 77ad77c0710f

diff --git a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
index a0412b5..a5911f7 100644 (file)
--- a/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
+++ b/llvm/utils/gn/secondary/libcxx/include/BUILD.gn
@@ -320,6 +320,7 @@ if (current_toolchain == default_toolchain) {
       "__format/formatter_floating_point.h",
       "__format/formatter_integer.h",
       "__format/formatter_integral.h",
+      "__format/formatter_output.h",
       "__format/formatter_pointer.h",
       "__format/formatter_string.h",
       "__format/parser_std_format_spec.h",