Index: Modules/getpath.c
===================================================================
--- Modules/getpath.c	(révision 78834)
+++ Modules/getpath.c	(copie de travail)
@@ -441,7 +441,7 @@
 	}
 	else
 		progpath[0] = '\0';
-	if (progpath[0] != SEP)
+	if (progpath[0] != SEP && progpath[0] != '\0')
 		absolutize(progpath);
 	strncpy(argv0_path, progpath, MAXPATHLEN);
 	argv0_path[MAXPATHLEN] = '\0';
Index: Lib/test/test_sys.py
===================================================================
--- Lib/test/test_sys.py	(révision 78834)
+++ Lib/test/test_sys.py	(copie de travail)
@@ -437,6 +437,14 @@
         self.assertEqual(sys.call_tracing(str, (2,)), "2")
         self.assertRaises(TypeError, sys.call_tracing, str, 2)
 
+    def test_executable(self):
+        import subprocess
+        p = subprocess.Popen(
+            ["nonexistent", "-c", 'import sys; print "executable=%r" % sys.executable'],
+            executable=sys.executable, stdout=subprocess.PIPE)
+        executable = p.communicate()[0].strip()
+        p.wait()
+        self.assertEqual(executable, "executable=''")
 
 class SizeofTest(unittest.TestCase):