Add a large-ish bignum to the test

Author: ajberkley

test/cl-binary-store-tests.lisp

@@ -592,7 +592,8 @@
 (define-test test-bignum
   (is '= (expt 2 64) (restore (store nil (expt 2 64))))
   (is '= 12345678901234567890 (restore (store nil 12345678901234567890)))
-  (is '= -12345678901234567890 (restore (store nil -12345678901234567890))))
+  (is '= -12345678901234567890 (restore (store nil -12345678901234567890)))
+  (is '= (expt 2 123456) (restore (store nil (expt 2 123456)))))
 
 (define-test test-write-into-extant-vector
   (loop for length in '(100 #-abcl 50000)