addr2line.c: boundary checks
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
addr2line.c: boundary checks
compressed debug sections. [ruby-dev:49840] [Bug #12850]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e