Index: src/org/python/modules/posix/PosixModule.java
===================================================================
--- src/org/python/modules/posix/PosixModule.java	(revision 7284)
+++ src/org/python/modules/posix/PosixModule.java	(working copy)
@@ -25,6 +25,7 @@
 import org.python.core.ClassDictInit;
 import org.python.core.Py;
 import org.python.core.PyBuiltinFunction;
+import org.python.core.PyBuiltinFunctionNarrow;
 import org.python.core.PyDictionary;
 import org.python.core.PyException;
 import org.python.core.PyFile;
@@ -929,15 +930,15 @@
         return os.getModuleName();
     }
 
-    static class LstatFunction extends PyBuiltinFunction {
+    static class LstatFunction extends PyBuiltinFunctionNarrow {
         LstatFunction() {
-            super("lstat",
+            super("lstat", 1, 1,
                   "lstat(path) -> stat result\n\n" +
                   "Like stat(path), but do not follow symbolic links.");
         }
 
         @Override
-        public PyObject __call__(ThreadState state, PyObject pathObj) {
+        public PyObject __call__(PyObject pathObj) {
             if (!(pathObj instanceof PyString)) {
                 throw Py.TypeError(String.format("coercing to Unicode: need string or buffer, %s " +
                                                  "found", pathObj.getType().fastGetName()));
@@ -947,9 +948,9 @@
         }
     }
 
-    static class StatFunction extends PyBuiltinFunction {
+    static class StatFunction extends PyBuiltinFunctionNarrow {
         StatFunction() {
-            super("stat",
+            super("stat", 1, 1,
                   "stat(path) -> stat result\n\n" +
                   "Perform a stat system call on the given path.\n\n" +
                   "Note that some platforms may return only a small subset of the\n" +
@@ -957,7 +958,7 @@
         }
 
         @Override
-        public PyObject __call__(ThreadState state, PyObject pathObj) {
+        public PyObject __call__(PyObject pathObj) {
             if (!(pathObj instanceof PyString)) {
                 throw Py.TypeError(String.format("coercing to Unicode: need string or buffer, %s " +
                                                  "found", pathObj.getType().fastGetName()));