--- /dev/null
+#include <lunaix/spike.h>
+#include <stdio.h>
+#include <unistd.h>
+
+void
+__assert_fail(const char* expr, const char* file, unsigned int line)
+{
+ printf("assertion failed: %s (%s:%d)\n", expr, file, line);
+
+ _exit(1);
+}
\ No newline at end of file