From: Serhiy Storchaka <storchaka@gmail.com>
Date: Thu, 3 Jul 2025 10:39:14 +0000 (+0300)
Subject: gh-133740: Fix regression in locale.nl_langinfo(ALT_DIGITS) (GH-136237)
X-Git-Tag: v3.15.0a1~1103
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=5c984ae35e30f0533e6cc727d23cc158decf001c;p=thirdparty%2FPython%2Fcpython.git

gh-133740: Fix regression in locale.nl_langinfo(ALT_DIGITS) (GH-136237)

There is no need to temporary switch locale for items ALT_DIGITS and ERA
if the nl_langinfo() result is empty (most locales).
---

diff --git a/Modules/_localemodule.c b/Modules/_localemodule.c
index c1f56008b7c4..41e6d48b1dbd 100644
--- a/Modules/_localemodule.c
+++ b/Modules/_localemodule.c
@@ -692,7 +692,7 @@ _locale_nl_langinfo_impl(PyObject *module, int item)
             result = result != NULL ? result : "";
             char *oldloc = NULL;
             if (langinfo_constants[i].category != LC_CTYPE
-                && (
+                && *result && (
 #ifdef __GLIBC__
                     // gh-133740: Always change the locale for ALT_DIGITS and ERA
 #  ifdef ALT_DIGITS