From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Tue, 19 May 2026 21:11:28 +0000 (+0200)
Subject: [3.13] gh-149983: Fix PyErr_NoMemory call without GIL in winconsoleio.c (GH-149984... 
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=23fcb4824fa65f29d7bc8290f7f8bac64a36dbc1;p=thirdparty%2FPython%2Fcpython.git

[3.13] gh-149983: Fix PyErr_NoMemory call without GIL in winconsoleio.c (GH-149984) (GH-150112)

(cherry picked from commit 3d2aa899bad1c0e274640dc0c4323f1744e73435)

Co-authored-by: AN Long <aisk@users.noreply.github.com>
---

diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index 008f8bf11887..a2f2642dfcbd 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -669,12 +669,13 @@ read_console_w(HANDLE handle, DWORD maxlen, DWORD *readlen) {
             maxlen += 1;
             Py_BLOCK_THREADS
             newbuf = (wchar_t*)PyMem_Realloc(buf, maxlen * sizeof(wchar_t));
-            Py_UNBLOCK_THREADS
             if (!newbuf) {
                 sig = -1;
                 PyErr_NoMemory();
+                Py_UNBLOCK_THREADS
                 break;
             }
+            Py_UNBLOCK_THREADS
             buf = newbuf;
             /* Only advance by n and not BUFSIZ in this case */
             off += n;