Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/src/liboventi/fatal.c
#include <u.h> #include <libc.h> #include <oventi.h> void vtFatal(char *fmt, ...) { va_list arg; va_start(arg, fmt); fprint(2, "fatal error: "); vfprint(2, fmt, arg); fprint(2, "\n"); va_end(arg); exits("vtFatal"); }