1 files changed, 15 insertions, 0 deletions
diff --git a/common.c b/common.c
new file mode 100644
index 0000000..42662ed
--- /dev/null
+++ b/common.c
@@ -0,0 +1,15 @@
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void
+die(const char *errstr, ...)
+{
+	va_list ap;
+
+	va_start(ap, errstr);
+	vfprintf(stderr, errstr, ap);
+	va_end(ap);
+	exit(1);
+}
+