Hello, ??? I have tried to build PJSIP with the uClibc, I got the snprintf issue, tried to fix it as per ?ticket 1024, http://trac.pjsip.org/repos/ticket/1024 . But I could not locate the file libc/stdio/_vprintf.c . I?m using uclibc version 0.9.29. I?ve tried to change in other files wherever ?null? string found in libc/stdio , still I?m getting the problem. Can someone help me in this. Thanks and regards, Arul jothi Technical Lead arul at embeddedwireless.com Embedded Wireless Labs Sdn Bhd www.embeddedwireless.com ?