[Python-checkins] cpython (merge 3.4 -> default): (Merge 3.4) Issue #21418: Fix a crash in the builtin function super() when

[victor.stinner]

http://hg.python.org/cpython/rev/53cf343c4fff
changeset:   90670:53cf343c4fff
parent:      90668:3c26389d741c
parent:      90669:cee528d44b1e
user:        Victor Stinner <victor.stinner at gmail.com>
date:        Tue May 13 01:32:54 2014 +0200
summary:
  (Merge 3.4) Issue #21418: Fix a crash in the builtin function super() when
called without argument and without current frame (ex: embedded Python).

files:
  Misc/NEWS            |   3 +++
  Objects/typeobject.c |  11 +++++++++--
  2 files changed, 12 insertions(+), 2 deletions(-)


diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -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 --git a/Objects/typeobject.c b/Objects/typeobject.c
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -6929,9 +6929,16 @@
     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");

-- 
Repository URL: http://hg.python.org/cpython