[Python-checkins] Use _PyErr_ChainStackItem() inside gen_send_ex(). (GH-20173)

[Chris Jerdonek]

https://github.com/python/cpython/commit/ff7a8b03c49153021d6de5d0b2fa8b5163059ed6
commit: ff7a8b03c49153021d6de5d0b2fa8b5163059ed6
branch: master
author: Chris Jerdonek <chris.jerdonek at gmail.com>
committer: GitHub <noreply at github.com>
date: 2020-05-18T15:36:09-07:00
summary:

Use _PyErr_ChainStackItem() inside gen_send_ex(). (GH-20173)

_PyErr_ChainStackItem was just added in GH-19951 (for bpo-31033).

files:
M Objects/genobject.c

diff --git a/Objects/genobject.c b/Objects/genobject.c
index 40179cdbf7dbd..271720bdf8b4c 100644
--- a/Objects/genobject.c
+++ b/Objects/genobject.c
@@ -203,16 +203,8 @@ gen_send_ex(PyGenObject *gen, PyObject *arg, int exc, int closing)
     assert(f->f_back == NULL);
     f->f_back = tstate->frame;
 
-    _PyErr_StackItem *gi_exc_state = &gen->gi_exc_state;
-    if (exc && gi_exc_state->exc_type != NULL &&
-        gi_exc_state->exc_type != Py_None)
-    {
-        Py_INCREF(gi_exc_state->exc_type);
-        Py_XINCREF(gi_exc_state->exc_value);
-        Py_XINCREF(gi_exc_state->exc_traceback);
-        _PyErr_ChainExceptions(gi_exc_state->exc_type,
-                               gi_exc_state->exc_value,
-                               gi_exc_state->exc_traceback);
+    if (exc) {
+        _PyErr_ChainStackItem(&gen->gi_exc_state);
     }
 
     gen->gi_running = 1;