Hello, This occurs on code built from master as of last night (18 May). #0 crcitt_string_array (dst=0x7fb402426e21 "", src=0x7fffc1b901f0, size=<value optimized out>) at crc.c:239 #1 0x00007fb4021f5e45 in generate_fromtag (tag=0x7fffc1b901e0, callid=<value optimized out>) at uac.c:142 #2 0x00007fb4021fb17e in request (uac_r=0x7fffc1b90290, ruri=0x7fb3fd6166e0, to=0x7fb3fd6166e0, from=<value optimized out>, next_hop=0x7fb3ff822a80) at uac.c:769 #3 0x00007fb3ff6042ce in ds_check_timer (ticks=<value optimized out>, param=<value optimized out>) at dispatch.c:2430 #4 0x000000000053b437 in compat_old_handler (ti=<value optimized out>, tl=<value optimized out>, data=<value optimized out>) at timer.c:1017 #5 0x000000000053d753 in slow_timer_main () at timer.c:1151 #6 0x000000000046b045 in main_loop () at main.c:1674 #7 0x000000000046cf0c in main (argc=<value optimized out>, argv=<value optimized out>) at main.c:2547 Regards, Peter -- Peter Dunkley Technical Director Crocodile RCS Ltd