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