Ruby

merge revision(s) 54934: [Backport #12355]

    * process.c (rb_exec_getargs): honor the expected argument types
      over the conversion method.  the basic language functionality
      should be robust.  [ruby-core:75388] [Bug #12355]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@55401 b2dd03c8-39d4-4d8f-98ff-823fe69b080e