Add spec to update backtrace array in place
Add spec to update backtrace array in place

ruby/spec,nobu/rubyspec,eregon/rubyspec,nobu/rubyspec,eregon/rubyspec,ruby/rubyspec,sgarciac/spec,sgarciac/spec,ruby/spec,ruby/spec,ruby/rubyspec,eregon/rubyspec,sgarciac/spec,nobu/rubyspec