diff options
Diffstat (limited to 'src/dhcpv6-ia.c')
| -rw-r--r-- | src/dhcpv6-ia.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/dhcpv6-ia.c b/src/dhcpv6-ia.c index 3d9fe83..b0a31a2 100644 --- a/src/dhcpv6-ia.c +++ b/src/dhcpv6-ia.c @@ -900,8 +900,10 @@ size_t dhcpv6_handle_ia(uint8_t *buf, size_t buflen, struct interface *iface, a->assigned = reqhint; a->all_class = class_oro; a->classes_cnt = classes_cnt; - a->classes = malloc(classes_cnt * sizeof(uint16_t)); - memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t)); + if (classes_cnt) { + a->classes = malloc(classes_cnt * sizeof(uint16_t)); + memcpy(a->classes, classes, classes_cnt * sizeof(uint16_t)); + } if (first) memcpy(a->key, first->key, sizeof(a->key)); |