From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 24 Nov 2019 15:07:08 +0000 (+0000)
Subject: util.c (mkexc): Populate dictionary before constructing exception class.
X-Git-Url: https://git.distorted.org.uk/~mdw/pyke/commitdiff_plain/41efbcc08120755b34f8157cae1fe855314b5c9f

util.c (mkexc): Populate dictionary before constructing exception class.

It turns out that the dictionary contents are copied into the new class
rather than being used by reference, so populating it later doesn't
actually do anything.
---

diff --git a/util.c b/util.c
index 9332c8b..29f7d12 100644
--- a/util.c
+++ b/util.c
@@ -324,13 +324,7 @@ PyObject *mkexc(PyObject *mod, PyObject *base,
   PyObject *func = 0;
   PyObject *meth = 0;
 
-  if ((nameobj = PyString_FromFormat("%s.%s",
-				     PyModule_GetName(mod),
-				     name)) == 0 ||
-      (dict = PyDict_New()) == 0 ||
-      (exc = PyErr_NewException(PyString_AS_STRING(nameobj),
-				base, dict)) == 0)
-    goto fail;
+  if ((dict = PyDict_New()) == 0) goto fail;
 
   if (mm) {
     while (mm->ml_name) {
@@ -344,6 +338,13 @@ PyObject *mkexc(PyObject *mod, PyObject *base,
     }
   }
 
+  if ((nameobj = PyString_FromFormat("%s.%s",
+				     PyModule_GetName(mod),
+				     name)) == 0 ||
+      (exc = PyErr_NewException(PyString_AS_STRING(nameobj),
+				base, dict)) == 0)
+    goto fail;
+
 done:
   Py_XDECREF(nameobj);
   Py_XDECREF(dict);