From: Rocky Bernstein <rocky.bernstein@...>
Date: 2008-03-11T18:30:28+09:00
Subject: Ruby 1.8.6 trace return line numbers wrong

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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]
Also filed as:
http://rubyforge.org/tracker/index.php?func=detail&aid=18749&group_id=426&atid=22040

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Consider this program:<br><br><span style="font-family: courier new,monospace;">&nbsp; def first</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">&nbsp; &nbsp; x = 0</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">&nbsp; &nbsp; 1</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">&nbsp; end</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">&nbsp; first</span><br>
<br>Running a trace on this:<br><br style="font-family: courier new,monospace;"><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">$ ruby -rtracer /tmp/bug.rb</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:1::-: def first</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:1:Module:&gt;: def first</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:1:Module:&lt;: def first</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:5::-: first</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:1:Object:&gt;: def first</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:2:Object:-:&nbsp;&nbsp; x = 0</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:3:Object:-:&nbsp;&nbsp; 1</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">#0:/tmp/bug.rb:2:Object:&lt;:&nbsp;&nbsp; x = 0<br>
<br><br>Notice that we give a <i>line</i> trace for line 3 but the <i>return </i>line number which follows that goes back to line 2. <br><br>Ruby version: ruby 1.8.6 (2007-06-07 patchlevel 36) [i486-linux]<br>Also filed as:<br>
<a href="http://rubyforge.org/tracker/index.php?func=detail&amp;aid=18749&amp;group_id=426&amp;atid=22040">http://rubyforge.org/tracker/index.php?func=detail&amp;aid=18749&amp;group_id=426&amp;atid=22040</a><br></span>

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