changeset:   90669:cee528d44b1e
branch:      3.4
parent:      90667:c0404f0da01a
user:        Victor Stinner <victor.stinner@gmail.com>
date:        Tue May 13 01:32:36 2014 +0200
files:       Misc/NEWS Objects/typeobject.c
description:
Issue #21418: Fix a crash in the builtin function super() when called without
argument and without current frame (ex: embedded Python).


diff -r c0404f0da01a -r cee528d44b1e Misc/NEWS
--- a/Misc/NEWS	Mon May 12 23:25:09 2014 +0200
+++ b/Misc/NEWS	Tue May 13 01:32:36 2014 +0200
@@ -10,6 +10,9 @@
 Core and Builtins
 -----------------
 
+- Issue #21418: Fix a crash in the builtin function super() when called without
+  argument and without current frame (ex: embedded Python).
+
 - Issue #21425: Fix flushing of standard streams in the interactive
   interpreter.
 
diff -r c0404f0da01a -r cee528d44b1e Objects/typeobject.c
--- a/Objects/typeobject.c	Mon May 12 23:25:09 2014 +0200
+++ b/Objects/typeobject.c	Tue May 13 01:32:36 2014 +0200
@@ -6919,9 +6919,16 @@
     if (type == NULL) {
         /* Call super(), without args -- fill in from __class__
            and first local variable on the stack. */
-        PyFrameObject *f = PyThreadState_GET()->frame;
-        PyCodeObject *co = f->f_code;
+        PyFrameObject *f;
+        PyCodeObject *co;
         Py_ssize_t i, n;
+        f = PyThreadState_GET()->frame;
+        if (f == NULL) {
+            PyErr_SetString(PyExc_RuntimeError,
+                            "super(): no current frame");
+            return -1;
+        }
+        co = f->f_code;
         if (co == NULL) {
             PyErr_SetString(PyExc_RuntimeError,
                             "super(): no code object");