fixes and cleanups in __Pyx_main()

diff --git a/Cython/Compiler/ModuleNode.py b/Cython/Compiler/ModuleNode.py
index 72d1074bc29a89ebcdac7b0dfaa99448ae0258e3..a66d43b70413f3b5730a9c75803fabdd10ecacc4 100644 (file)
--- a/Cython/Compiler/ModuleNode.py
+++ b/Cython/Compiler/ModuleNode.py
@@ -2678,7 +2678,8 @@ static int __Pyx_main(int argc, wchar_t **argv) {
     if (argc && argv)
         Py_SetProgramName(argv[0]);
     Py_Initialize();
-    PySys_SetArgv(argc, argv);
+    if (argc && argv)
+        PySys_SetArgv(argc, argv);
     { /* init module '%(module_name)s' as '__main__' */
       PyObject* m = NULL;
       %(module_is_main)s = 1;