Inliners are Hard to Debug

drbrain@segment7.net (Eric Hodel) — Sun, 01 Jul 2007 01:40:00 -0700

So I wrote SuperCaller

require 'rubygems'
require 'super_caller'
require 'super_caller/exception'

class X
  def y; z; end
  def z; raise; end
end

begin
  X.new.y
rescue => e
  e.backtrace .each do |frame|
    puts frame
    puts frame.source || frame.sexp.inspect
    puts "---"
  end
end

Gives:

/usr/local/lib/ruby/gems/1.8/gems/SuperCaller-1.0.0/lib/super_caller/exception.rb:12:in `initialize'
def initialize(message)
  old_initialize(message)
  @backtrace = super_caller
end
---
test.rb:7:in `new'
[[:vcall, :raise]]
---
test.rb:7:in `z'
[[:vcall, :raise]]
---
test.rb:6:in `y'
def y
  z
end
---
test.rb:11
[[:call, [:call, [:const, :X], :new], :y]]
---

Coming Soon

Segment7: Inliners are Hard to Debug

Inliners are Hard to Debug