initial commit

util.c

@@ -0,0 +1,12 @@
+#include <stdlib.h>
+#include <string.h>
+
+#include <unistd.h>
+
+#include "util.h"
+
+COLD noreturn void fatal_error(const char *s) {
+    write(STDERR_FILENO, s, strlen(s));
+    write(STDERR_FILENO, "\n", 1);
+    abort();
+}