From 3fa36ff5e4991550e31cc7ab55dc3a2165c2ffa3 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Fri, 9 Oct 2015 03:37:11 +0200
Subject: Issue #25318: Fix backslashreplace()

Fix code to estimate the needed space.
---
 Objects/unicodeobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 10cdcc0..a3bbf92 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -590,7 +590,7 @@ backslashreplace(_PyBytesWriter *writer, Py_ssize_t prealloc_per_char,
             incr = 2+4;
         else {
             assert(ch <= MAX_UNICODE);
-            incr = 2+6;
+            incr = 2+8;
         }
         if (size > PY_SSIZE_T_MAX - incr) {
             PyErr_SetString(PyExc_OverflowError,
-- 
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