commit f87289bb58e71f5df73cbd594cbc0c0515e91c4b
author Antoine Pitrou <solipsis@pitrou.net> Sat Jun 30 23:37:47 2012 +0200
committer Antoine Pitrou <solipsis@pitrou.net> Sat Jun 30 23:37:47 2012 +0200
tree 0ab9487f6c843687835426960fab5e3eb6316eae
parent 4c99071c9be1cf81e915ebfcb17dcf50c6e489d6

Issue #15229: An OSError subclass whose __init__ doesn't call back
OSError.__init__ could produce incomplete instances, leading to crashes
when calling str() on them.

Objects/exceptions.c

diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index f706698..5c85f10 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -834,6 +834,7 @@
 #endif
 
     /* Steals the reference to args */
+    Py_CLEAR(self->args);
     self->args = args;
     args = NULL;
 
@@ -916,6 +917,11 @@
             ))
             goto error;
     }
+    else {
+        self->args = PyTuple_New(0);
+        if (self->args == NULL)
+            goto error;
+    }
 
     return (PyObject *) self;