diff: ensure correct lifetime of external_diff_cmd

diff --git a/parse-options-cb.c b/parse-options-cb.c
index e8236534ac8aa00fde2a5a9ae27e85c72d062f3a..8c9edce52f63bcb1085b119b3a2264a97b1fb374 100644 (file)
--- a/parse-options-cb.c
+++ b/parse-options-cb.c
@@ -28,13 +28,6 @@ int parse_opt_abbrev_cb(const struct option *opt, const char *arg, int unset)
        return 0;
 }
 
-int parse_opt_approxidate_cb(const struct option *opt, const char *arg,
-                            int unset)
-{
-       *(timestamp_t *)(opt->value) = approxidate(arg);
-       return 0;
-}
-
 int parse_opt_expiry_date_cb(const struct option *opt, const char *arg,
                             int unset)
 {
@@ -65,6 +58,8 @@ int parse_opt_verbosity_cb(const struct option *opt, const char *arg,
 {
        int *target = opt->value;
 
+       BUG_ON_OPT_ARG(arg);
+
        if (unset)
                /* --no-quiet, --no-verbose */
                *target = 0;
@@ -87,6 +82,8 @@ int parse_opt_commits(const struct option *opt, const char *arg, int unset)
        struct object_id oid;
        struct commit *commit;
 
+       BUG_ON_OPT_NEG(unset);
+
        if (!arg)
                return -1;
        if (get_oid(arg, &oid))
@@ -117,6 +114,9 @@ int parse_opt_object_name(const struct option *opt, const char *arg, int unset)
 int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
 {
        int *target = opt->value;
+
+       BUG_ON_OPT_ARG(arg);
+
        *target = unset ? 2 : 1;
        return 0;
 }