Index: Lib/trace.py
===================================================================
--- Lib/trace.py	(revision 82997)
+++ Lib/trace.py	(working copy)
@@ -660,6 +660,7 @@
 
 def main(argv=None):
     import getopt
+    import runpy
 
     if argv is None:
         argv = sys.argv
@@ -802,7 +803,7 @@
                 script = fp.read()
             finally:
                 fp.close()
-            t.run('exec(%r)' % (script,))
+            t.runfunc(runpy.run_path, progname, run_name=progname)
         except IOError as err:
             _err_exit("Cannot run file %r because: %s" % (sys.argv[0], err))
         except SystemExit: