Consider this program:

  def first
    x = 0
    1
  end
  first

Running a trace on this:


$ ruby -rtracer /tmp/bug.rb
#0:/tmp/bug.rb:1::-: def first
#0:/tmp/bug.rb:1:Module:>: def first
#0:/tmp/bug.rb:1:Module:<: def first
#0:/tmp/bug.rb:5::-: first
#0:/tmp/bug.rb:1:Object:>: def first
#0:/tmp/bug.rb:2:Object:-:   x = 0
#0:/tmp/bug.rb:3:Object:-:   1
#0:/tmp/bug.rb:2:Object:<:   x = 0


Notice that we give a line trace for line 3 but the return line number which follows that goes back to line 2. 

Ruby version: ruby 1.8.6 (2007-06-07 patchlevel 36) [i486-linux]

Date: 2008-03-13 01:50
Sender: Rocky Bernstein

Fixed in SVN commit 15761. [ruby-core:15855]