commit de1c7d52527e1d84c131f4801d2dc3d0236b5b25
author svelankar <siddharth.velankar@gmail.com> Thu Mar 09 00:27:48 2017 -0500
committer Serhiy Storchaka <storchaka@gmail.com> Thu Mar 09 07:27:48 2017 +0200
tree 9205e97650b1fbf63a6b9803da0906a923c0b150
parent 9fbb65e6464b56c6d677090e185c9fe16a80ed96

Issue #29682:Possible missing NULL check in pyexpat (#573)

Modules/pyexpat.c

diff --git a/Modules/pyexpat.c b/Modules/pyexpat.c
index a95c388..7f95bb8 100644
--- a/Modules/pyexpat.c
+++ b/Modules/pyexpat.c
@@ -1312,6 +1312,13 @@
     else {
         self->itself = XML_ParserCreate(encoding);
     }
+    if (self->itself == NULL) {
+        PyErr_SetString(PyExc_RuntimeError,
+                        "XML_ParserCreate failed");
+        Py_DECREF(self);
+        return NULL;
+    }
+
 #if ((XML_MAJOR_VERSION >= 2) && (XML_MINOR_VERSION >= 1)) || defined(XML_HAS_SET_HASH_SALT)
     /* This feature was added upstream in libexpat 2.1.0.  Our expat copy
      * has a backport of this feature where we also define XML_HAS_SET_HASH_SALT
@@ -1326,12 +1333,6 @@
 #else
     PyObject_GC_Init(self);
 #endif
-    if (self->itself == NULL) {
-        PyErr_SetString(PyExc_RuntimeError,
-                        "XML_ParserCreate failed");
-        Py_DECREF(self);
-        return NULL;
-    }
     XML_SetUserData(self->itself, (void *)self);
 #ifdef Py_USING_UNICODE
     XML_SetUnknownEncodingHandler(self->itself,