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block-qdict: Pacify Coverity after commit f1b34a248e 

Commit f1b34a248e replaced less-than-obvious test in
qdict_flatten_qdict() by the obvious one.  Sadly, it made something
else non-obvious: the fact that @new_key passed to qdict_put_obj()
can't be null, because that depends on the function's precondition
(target == qdict) == !prefix.

Tweak the function some more to help Coverity and human readers alike.

Fixes: CID 1393620
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2018-06-26 10:05:45 +02:00 committed by Kevin Wolf
parent 609ef9f451
commit 17e9aa3f22
1 changed files with 8 additions and 8 deletions
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16
qobject/block-qdict.c
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@ -97,7 +97,7 @@ static void qdict_flatten_qdict(QDict *qdict, QDict *target, const char *prefix)
const QDictEntry *entry, *next; const QDictEntry *entry, *next;
QDict *dict_val; QDict *dict_val;
QList *list_val; QList *list_val;
char *new_key; char *key, *new_key;
entry = qdict_first(qdict); entry = qdict_first(qdict);
@ -106,10 +106,12 @@ static void qdict_flatten_qdict(QDict *qdict, QDict *target, const char *prefix)
value = qdict_entry_value(entry); value = qdict_entry_value(entry);
dict_val = qobject_to(QDict, value); dict_val = qobject_to(QDict, value);
list_val = qobject_to(QList, value); list_val = qobject_to(QList, value);
new_key = NULL;
if (prefix) { if (prefix) {
new_key = g_strdup_printf("%s.%s", prefix, entry->key); key = new_key = g_strdup_printf("%s.%s", prefix, entry->key);
} else {
key = entry->key;
new_key = NULL;
} }
/* /*
@ -125,19 +127,17 @@ static void qdict_flatten_qdict(QDict *qdict, QDict *target, const char *prefix)
* well advised not to modify them altogether.) * well advised not to modify them altogether.)
*/ */
if (dict_val && qdict_size(dict_val)) { if (dict_val && qdict_size(dict_val)) {
qdict_flatten_qdict(dict_val, target, qdict_flatten_qdict(dict_val, target, key);
new_key ? new_key : entry->key);
if (target == qdict) { if (target == qdict) {
qdict_del(qdict, entry->key); qdict_del(qdict, entry->key);
} }
} else if (list_val && !qlist_empty(list_val)) { } else if (list_val && !qlist_empty(list_val)) {
qdict_flatten_qlist(list_val, target, qdict_flatten_qlist(list_val, target, key);
new_key ? new_key : entry->key);
if (target == qdict) { if (target == qdict) {
qdict_del(qdict, entry->key); qdict_del(qdict, entry->key);
} }
} else if (target != qdict) { } else if (target != qdict) {
qdict_put_obj(target, new_key, qobject_ref(value)); qdict_put_obj(target, key, qobject_ref(value));
} }
g_free(new_key); g_free(new_key);