compat: fall back on __va_copy if available

diff --git a/builtin/gc.c b/builtin/gc.c
index c304638b7845601f184149d3c48cbc1ea1e195f5..1a80702b3d1c86b55af24be3b3396f17e9d4a21c 100644 (file)
--- a/builtin/gc.c
+++ b/builtin/gc.c
@@ -180,7 +180,7 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
        char buf[80];
 
        struct option builtin_gc_options[] = {
-               OPT__QUIET(&quiet),
+               OPT__QUIET(&quiet, "suppress progress reporting"),
                { OPTION_STRING, 0, "prune", &prune_expire, "date",
                        "prune unreferenced objects",
                        PARSE_OPT_OPTARG, NULL, (intptr_t)prune_expire },
@@ -189,6 +189,9 @@ int cmd_gc(int argc, const char **argv, const char *prefix)
                OPT_END()
        };
 
+       if (argc == 2 && !strcmp(argv[1], "-h"))
+               usage_with_options(builtin_gc_usage, builtin_gc_options);
+
        git_config(gc_config, NULL);
 
        if (pack_refs < 0)