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Issue #260: add a check to prevent trivial loops in the object tree, even though it is up to the callers to avoid doing so in more complex cases.

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Eric Haszlakiewicz
2016-08-20 22:41:49 -04:00
parent c4d060bf80
commit 5fccfed4f4
2 changed files with 12 additions and 0 deletions
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6
json_object.c
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@@ -459,6 +459,12 @@ int json_object_object_add_ex(struct json_object* jso,
existing_entry = (opts & JSON_C_OBJECT_ADD_KEY_IS_NEW) ? NULL :
lh_table_lookup_entry_w_hash(jso->o.c_object,
(const void *)key, hash);
// The caller must avoid creating loops in the object tree, but do a
// quick check anyway to make sure we're not creating a trivial loop.
if (jso == val)
return -1;
if (!existing_entry)
{
const void *const k = (opts & JSON_C_OBJECT_KEY_IS_CONSTANT) ?