While compiling Kamailio 4.3 on Debian Jessie, I got this:
CC (gcc) [M xmlrpc.so] xmlrpc.o
xmlrpc.c: In function 'set_fault':
xmlrpc.c:886:2: warning: implicit declaration of function 'vsnprintf' [-Wimplicit-function-declaration]
vsnprintf(buf, REASON_BUF_LEN, fmt, ap);
^
xmlrpc.c: In function 'print_value':
xmlrpc.c:1015:3: warning: implicit declaration of function 'snprintf' [-Wimplicit-function-declaration]
body.len = snprintf(buf, 256, "%f", va_arg(*ap, double));
^
xmlrpc.c:1015:14: warning: incompatible implicit declaration of built-in function 'snprintf'
body.len = snprintf(buf, 256, "%f", va_arg(*ap, double));
^
Sounds pretty serious.
-- Juha