Test for fix made by Monty for BUG#37276 (CHECK TABLE said Invalid key block position: 15731098820608  key
+# block size: 8192  file_length: 425984). Other corruption cases still not fixed.
Without the fix, the test would yield the corruption message in CHECK TABLE.

mysql-test/r/maria-big2.result:
  result
mysql-test/t/maria-big2.test:
  test for bugfix