* bignum.c (bary_sq_fast): Extracted from bigsqr_fast and
  ensure not to access zds[2*xn].
  (bigsqr_fast): Allocate the result bignum with 2*xn words.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41813 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-07-07

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41814 b2dd03c8-39d4-4d8f-98ff-823fe69b080e