[Python-checkins] bpo-38138: Fix memory leak introduced by interned strings (GH-16053)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/8d88e8c662a80c186c7a0e67f1c1f3d4010276f8
commit: 8d88e8c662a80c186c7a0e67f1c1f3d4010276f8
branch: master
author: Dino Viehland <dinoviehland at fb.com>
committer: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
date: 2019-09-12T07:38:13-07:00
summary:

bpo-38138: Fix memory leak introduced by interned strings (GH-16053)



Interned string needs to be decref'd



https://bugs.python.org/issue38138



Automerge-Triggered-By: @matrixise

files:
M Python/ast.c

diff --git a/Python/ast.c b/Python/ast.c
index 46815c271b62..e6f71671c18e 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -630,6 +630,7 @@ new_identifier(const char *n, struct compiling *c)
         PyObject *args[2] = {form, id};
         id2 = _PyObject_FastCall(c->c_normalize, args, 2);
         Py_DECREF(id);
+        Py_DECREF(form);
         if (!id2)
             return NULL;
         if (!PyUnicode_Check(id2)) {