Fix up after merge

Author: markshannon

Include/internal/pycore_opcode_metadata.h

@@ -226,11 +226,11 @@ static const _PyStackRef PyStackRef_NULL = { .bits = PyStackRef_NULL_BITS };
 #ifdef Py_DEBUG
 
 static inline void PyStackRef_CheckValid(_PyStackRef ref) {
+    assert(ref.bits != 0);
     int tag = ref.bits & Py_TAG_BITS;
     PyObject *obj = BITS_TO_PTR_MASKED(ref);
     switch (tag) {
         case 0:
-            break;
         case Py_TAG_REFCNT:
             /* Can be immortal if object was made immortal after reference came into existence */
             assert(obj != NULL && obj != Py_True && obj != Py_False && obj != Py_None);
@@ -346,7 +346,7 @@ PyStackRef_DUP(_PyStackRef ref)
 {
     assert(!PyStackRef_IsNull(ref));
     if (!PyStackRef_HasCount(ref)) {
-        Py_INCREF(BITS_TO_PTR(ref));
+        Py_INCREF_MORTAL(BITS_TO_PTR(ref));
     }
     return ref;
 }

Include/internal/pycore_stackref.h

@@ -245,7 +245,7 @@ PyAPI_FUNC(void) _Py_DecRef(PyObject *);
 #ifndef Py_GIL_DISABLED
 static inline Py_ALWAYS_INLINE void Py_INCREF_MORTAL(PyObject *op)
 {
-    assert(!_Py_IsImmortal(op));
+    assert(!_Py_IsStaticImmortal(op));
     op->ob_refcnt++;
     _Py_INCREF_STAT_INC();
 #if defined(Py_REF_DEBUG) && !defined(Py_LIMITED_API)

Include/internal/pycore_uop_metadata.h

@@ -4312,17 +4312,16 @@ dummy_func(
             assert(Py_TYPE(callable_o) == &PyFunction_Type);
             int code_flags = ((PyCodeObject*)PyFunction_GET_CODE(callable_o))->co_flags;
             PyObject *locals = code_flags & CO_OPTIMIZED ? NULL : Py_NewRef(PyFunction_GET_GLOBALS(callable_o));
-            new_frame = _PyEvalFramePushAndInit(
+            _PyInterpreterFrame *temp = _PyEvalFramePushAndInit(
                 tstate, callable[0], locals,
                 args, positional_args, kwnames_o, frame
             );
             PyStackRef_CLOSE(kwnames);
             // The frame has stolen all the arguments from the stack,
             // so there is no need to clean them up.
             SYNC_SP();
-            if (new_frame == NULL) {
-                ERROR_NO_POP();
-            }
+            ERROR_IF(temp == NULL, error);
+            new_frame = temp;
         }
 
         op(_CHECK_FUNCTION_VERSION_KW, (func_version/2, callable[1], self_or_null[1], unused[oparg], kwnames -- callable[1], self_or_null[1], unused[oparg], kwnames)) {

Include/refcount.h

@@ -1500,7 +1500,9 @@ initialize_locals(PyThreadState *tstate, PyFunctionObject *func,
 {
     PyCodeObject *co = (PyCodeObject*)func->func_code;
     const Py_ssize_t total_args = co->co_argcount + co->co_kwonlyargcount;
-
+    for (Py_ssize_t i = 0; i < argcount; i++) {
+        PyStackRef_CheckValid(args[i]);
+    }
     /* Create a dictionary for keyword parameters (**kwags) */
     PyObject *kwdict;
     Py_ssize_t i;