merge revision(s) 54304: [Backport #12223]
* sprintf.c (rb_str_format): fix buffer overflow, length must be greater than precision. reported by William Bowling <will AT wbowling.info>.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 54304: [Backport #12223]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@54505 b2dd03c8-39d4-4d8f-98ff-823fe69b080e