New version of Ruby code, with command preceding raising an exception, and ruby-prof-check-trace for the new version.

ruby-prof-check-trace 2

Note: I couldn't run it using bundle exec, so I had to run it using an unrelated ruby-prof-check-trace file.

LINE 2: return event without call: RubyProf::Profile#start
STACK: []
fixing stack
LINE 3: return event without call: Module#start
STACK: []
fixing stack
LINE 53: return event without call: RubyProfReproduction#throw_rescue_exceptions_method
STACK: ["Kernel#load", "Object#run_the_methods", "RubyProfReproduction#throw_rescue_exceptions_method"]
fixing stack
LINE 9000069: return event without call: Module#start_script
STACK: []
fixing stack
LINE 9000070: return event without call: RubyProf::Cmd#run
STACK: []
fixing stack
LINE 9000071: return event without call: Kernel#load
STACK: []
fixing stack
{4303861961=>{4312611201=>["Module#stop", "RubyProf::Profile#stop"]}}

ruby-prof-check-trace 3

This one uses
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin10.8.0]
and like previous ruby-prof-check-trace is being called on an unrelated ruby-prof-check-trace file.

LINE 2: return event without call: RubyProf::Profile#start
STACK: []
fixing stack
LINE 3: return event without call: Module#start
STACK: []
fixing stack
LINE 53: return event without call: RubyProfReproduction#throw_rescue_exceptions_method
STACK: ["Kernel#load", "Object#run_the_methods", "RubyProfReproduction#throw_rescue_exceptions_method"]
fixing stack
LINE 9000069: return event without call: Module#start_script
STACK: []
fixing stack
LINE 9000070: return event without call: RubyProf::Cmd#run
STACK: []
fixing stack
LINE 9000071: return event without call: Kernel#load
STACK: []
fixing stack
{4304244361=>{4308813321=>["Module#stop", "RubyProf::Profile#stop"]}}

ruby_prof_reproduction.rb new version

class RubyProfReproduction
  def throw_rescue_exceptions_method
	  do_very_little
    NO_SUCH_CONSTANT rescue nil
    # Just so that throwing an exception was not the last line of a method
    42
  end

  def do_very_little
    987654321 ** 3
  end

  def slow_method
    i = 0
    loop do
      i += 1
      return if i > 1_000_000
      123456789 ** 2
    end
  end
end

def run_the_methods
  reproduction = RubyProfReproduction.new
  reproduction.throw_rescue_exceptions_method
  reproduction.slow_method
end

run_the_methods