svn diff trace.py
Index: trace.py
===================================================================
--- trace.py    (revision 54281)
+++ trace.py    (working copy)
@@ -776,6 +776,9 @@
                   countcallers=countcallers, ignoremods=ignore_modules,
                   ignoredirs=ignore_dirs, infile=counts_file,
                   outfile=counts_file)
+
+        global __file__
+        __file__ = progname
         try:
             t.run('execfile(%r)' % (progname,))
         except IOError, err: