make compile error if possible
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55125 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
make compile error if possible
format is wrong or does not match with the variable argument
length if possible.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55125 b2dd03c8-39d4-4d8f-98ff-823fe69b080e