From: AN Long <aisk@users.noreply.github.com>
Date: Sun, 21 Jun 2026 17:16:30 +0000 (+0900)
Subject: gh-151845: Fix formatfloat() return-value contract in unicode_format.c (#151846)
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2661e6189ab2833bf32fa723cc427e64c026839;p=thirdparty%2FPython%2Fcpython.git

gh-151845: Fix formatfloat() return-value contract in unicode_format.c (#151846)

Fix formatfloat() return-value contract in unicode_format.c
---

diff --git a/Objects/unicode_format.c b/Objects/unicode_format.c
index e2790c8c1d43..1d6f3f7d9a6f 100644
--- a/Objects/unicode_format.c
+++ b/Objects/unicode_format.c
@@ -159,8 +159,13 @@ formatfloat(PyObject *v,
             return -1;
         }
     }
-    else
+    else {
         *p_output = _PyUnicode_FromASCII(p, len);
+        if (*p_output == NULL) {
+            PyMem_Free(p);
+            return -1;
+        }
+    }
     PyMem_Free(p);
     return 0;
 }