[DOC]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46000 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Use Etc.uname instead of uname command invocation.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46001 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
eval_error.c: investigate core dump

* eval_error.c (error_handle): show backtrace at SIGSEGV, to
  investigate core dump in CI.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46002 b2dd03c8-39d4-4d8f-98ff-823fe69b080e