From: AN Long <aisk@users.noreply.github.com>
Date: Tue, 19 May 2026 20:31:00 +0000 (+0900)
Subject: gh-149983: Fix PyErr_NoMemory call without GIL in winconsoleio.c (GH-149984)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d2aa899bad1c0e274640dc0c4323f1744e73435;p=thirdparty%2FPython%2Fcpython.git

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

diff --git a/Modules/_io/winconsoleio.c b/Modules/_io/winconsoleio.c
index 677d7e85d4e6..4a3fc586fa3a 100644
--- a/Modules/_io/winconsoleio.c
+++ b/Modules/_io/winconsoleio.c
@@ -673,12 +673,13 @@ 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;