-void log_printf_lf(enum log_levels level, const char *file, int line,
- const char *function, const char *format, ...)
+void log_vprintf_lf(enum log_levels level, const char *file, unsigned line,
+ const char *function, const char *format, va_list args);
+void log_printf_lf(enum log_levels level, const char *file, unsigned line,
+ const char *function, const char *format, ...)