Hello,

I discovered that the function "uac_replace_to" does a segmentation fault.

Context:
Opensips compiled for ARM system.
The original request URI makes a fork to several users.
When sending to PSTN, I've to rewrite To username because the PSTN
gateway uses it instead of R-URI.

As I've only 8MB in my system, I can't have anything else than the
debugs in stdout ... and no core can be generated :(

# config part :

branch_route[1] {
    if (isflagset(FORK)) {
        xlog("L_NOTICE",". branch $T_branch_idx to $ru\r\n");
        if (isflagset(TO_PSTN)) {
            uac_replace_to("$ru");
        }
    }
}


# SIP message :

INVITE sip:9...@sip.anywhere.com SIP/2.0
v: SIP/2.0/UDP 192.168.1.61:3072;branch=z9hG4bK-b44ix110y915;rport
f: "Sam" <sip:10...@sip.anywhere.com>;tag=ydsi0kq193
t: <sip:9...@sip.anywhere.com>
i: e825b352f45c-vqxs7wotw2g8
CSeq: 1 INVITE
Max-Forwards: 42
m: <sip:10933@192.168.1.61:3072>;reg-id=1
User-Agent: snom821/8.7.3.19
Accept: application/sdp
Allow: INVITE, ACK, CANCEL, BYE, REFER, OPTIONS, NOTIFY, SUBSCRIBE,
PRACK, MESSAGE, INFO, UPDATE
Allow-Events: talk, hold, refer, call-info
Supported: timer, replaces, from-change
Session-Expires: 1800;refresher=uas
Min-SE: 90
c: application/sdp
l: 289

v=0
...
a=sendrecv

# opensips debug logs :

. branch 0 to sip:0663128...@sip.anywhere.com
[Script Trace][line 340][me][core if] -> (INVITE
e825b352f45c-vqxs7wotw2g8 FU=10933 RU=0663128505)
[Script Trace][line 337][me][module uac_replace_to] -> (INVITE
e825b352f45c-vqxs7wotw2g8 FU=10933 RU=0663128505)
Dec 19 17:59:31 [25206] DBG:uac:replace_uri: uri to replace
[sip:9...@sip.anywhere.com]
Dec 19 17:59:31 [25206] DBG:uac:replace_uri: replacement uri is
[sip:0663128...@sip.anywhere.com]
Dec 19 17:59:31 [25206] DBG:uac:replace_uri: encode
is=<AAAAAAl2X1FFV1QbRhspCxAbEh9LWE0GD3Jvd3NlLmNvbQ--> len=48
Segmentation fault


If you know another way to replace $tU ?

thanks a lot,

Samuel MULLER

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