From 622c711ccfa9ce42b9d6b20bca0085f804f66e59 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Joshua=20Vanda=C3=ABle?= <joshua@vandaele.software>
Date: Wed, 12 Aug 2026 19:12:42 +0200
Subject: Fix crashes when using `std::locale{""}` with an invalid LC_ALL

---
 Source/Core/Common/LocaleUtil.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 Source/Core/Common/LocaleUtil.cpp

(limited to 'Source/Core/Common/LocaleUtil.cpp')

diff --git a/Source/Core/Common/LocaleUtil.cpp b/Source/Core/Common/LocaleUtil.cpp
new file mode 100644
index 0000000000..b6d923f709
--- /dev/null
+++ b/Source/Core/Common/LocaleUtil.cpp
@@ -0,0 +1,27 @@
+// Copyright 2026 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "Common/LocaleUtil.h"
+
+#include <locale.h>
+
+namespace Common
+{
+std::locale GetEnvironmentLocale()
+{
+#ifdef _WIN32
+  if (_locale_t loc = _create_locale(LC_ALL, ""))
+  {
+    _free_locale(loc);
+    return std::locale{""};
+  }
+#else
+  if (locale_t loc = newlocale(LC_ALL_MASK, "", static_cast<locale_t>(0)))
+  {
+    freelocale(loc);
+    return std::locale{""};
+  }
+#endif
+  return std::locale::classic();
+}
+}  // Namespace Common
-- 
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