commit 993ac92418839427d4068d6ae8e618b06b5d9294
author Steve Dower <steve.dower@python.org> Tue Sep 03 12:50:51 2019 -0700
committer GitHub <noreply@github.com> Tue Sep 03 12:50:51 2019 -0700
tree 96b6441c09e4da1a050f12aae2eabd47362af09d
parent 0cf832a9ef84be6e18aad02464814530d80b82b2

bpo-38020: Fixes crash in os.readlink() on Windows (GH-15663)

Modules/posixmodule.c

diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 2302678..c412d07 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -7818,7 +7818,7 @@
     HANDLE reparse_point_handle;
     char target_buffer[_Py_MAXIMUM_REPARSE_DATA_BUFFER_SIZE];
     _Py_REPARSE_DATA_BUFFER *rdb = (_Py_REPARSE_DATA_BUFFER *)target_buffer;
-    PyObject *result;
+    PyObject *result = NULL;
 
     /* First get a handle to the reparse point */
     Py_BEGIN_ALLOW_THREADS
@@ -7872,7 +7872,7 @@
             name[1] = L'\\';
         }
         result = PyUnicode_FromWideChar(name, nameLen);
-        if (path->narrow) {
+        if (result && path->narrow) {
             Py_SETREF(result, PyUnicode_EncodeFSDefault(result));
         }
     }