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diff --git a/lib/dns/message.c b/lib/dns/message.c
index d9e341a09e..7c813a5cf6 100644
--- a/lib/dns/message.c
+++ b/lib/dns/message.c
@@ -1712,6 +1712,19 @@ dns_message_parse(dns_message_t *msg, isc_buffer_t *source,
msg->header_ok = 0;
msg->question_ok = 0;
+ if ((options & DNS_MESSAGEPARSE_CLONEBUFFER) == 0) {
+ isc_buffer_usedregion(&origsource, &msg->saved);
+ } else {
+ msg->saved.length = isc_buffer_usedlength(&origsource);
+ msg->saved.base = isc_mem_get(msg->mctx, msg->saved.length);
+ if (msg->saved.base == NULL) {
+ return (ISC_R_NOMEMORY);
+ }
+ memmove(msg->saved.base, isc_buffer_base(&origsource),
+ msg->saved.length);
+ msg->free_saved = 1;
+ }
+
isc_buffer_remainingregion(source, &r);
if (r.length < DNS_MESSAGE_HEADERLEN)
return (ISC_R_UNEXPECTEDEND);
@@ -1787,17 +1800,6 @@ dns_message_parse(dns_message_t *msg, isc_buffer_t *source,
}
truncated:
- if ((options & DNS_MESSAGEPARSE_CLONEBUFFER) == 0)
- isc_buffer_usedregion(&origsource, &msg->saved);
- else {
- msg->saved.length = isc_buffer_usedlength(&origsource);
- msg->saved.base = isc_mem_get(msg->mctx, msg->saved.length);
- if (msg->saved.base == NULL)
- return (ISC_R_NOMEMORY);
- memmove(msg->saved.base, isc_buffer_base(&origsource),
- msg->saved.length);
- msg->free_saved = 1;
- }
if (ret == ISC_R_UNEXPECTEDEND && ignore_tc)
return (DNS_R_RECOVERABLE);
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