This is after the patch to libasn1c, removing str arg constness. Note the comment added in the code. --- src/ranap_msg_factory.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/ranap_msg_factory.c b/src/ranap_msg_factory.c index bdae92e..e87eeaf 100644 --- a/src/ranap_msg_factory.c +++ b/src/ranap_msg_factory.c @@ -180,8 +180,13 @@ struct msgb *ranap_new_msg_dt(uint8_t sapi, const uint8_t *nas, unsigned int nas else ies.sapi = RANAP_SAPI_sapi_0; - /* Avoid copying + later freeing of OCTET STRING */ - OCTET_STRING_noalloc(&ies.nas_pdu, nas, nas_len); + /* + * Avoid copying + later freeing of OCTET STRING. + * To store the pointer in an OCTET_STRING_t without copying, we need + * to un-const *nas. Note: un-consting *nas is safe because ies.nas_pdu + * is only used to store the IEs in dt. + */ + OCTET_STRING_noalloc(&ies.nas_pdu, (uint8_t*)nas, nas_len); /* ies -> dt */ rc = ranap_encode_directtransferies(&dt, &ies); -- 2.1.4