mruby/mruby — pull request #524 by tsahara-iij (2012-11-02 01:52:16+00:00)
Title: show backtrace when mruby dies on unhandled exception

```
% cat c.rb
def a; b; end
def b; hoge; end

a

% bin/mruby c.rb
trace:
[3] (cfunc):-1:in BasicObject.method_missing
[2] c.rb:2:in Object.b
[1] c.rb:1:in Object.a
[0] c.rb:4:in Object.(???)
c.rb:2: undefined method 'hoge' for main (NoMethodError)
```