compat: fall back on __va_copy if available

diff --git a/builtin/read-tree.c b/builtin/read-tree.c
index eb1e3e7467ac722f4b6cc1da03f7671d21abc676..73c89ed15ba2fb0c470141499c3390b77cf1d81c 100644 (file)
--- a/builtin/read-tree.c
+++ b/builtin/read-tree.c
@@ -109,7 +109,7 @@ int cmd_read_tree(int argc, const char **argv, const char *unused_prefix)
                  PARSE_OPT_NONEG, index_output_cb },
                OPT_SET_INT(0, "empty", &read_empty,
                            "only empty the index", 1),
-               OPT__VERBOSE(&opts.verbose_update),
+               OPT__VERBOSE(&opts.verbose_update, "be verbose"),
                OPT_GROUP("Merging"),
                OPT_SET_INT('m', NULL, &opts.merge,
                            "perform a merge in addition to a read", 1),