From 1fe5efb4bd3d86113d5f57e92713da00fec7453f Mon Sep 17 00:00:00 2001
From: Ralf Gommers <ralf.gommers@gmail.com>
Date: Fri, 20 Oct 2023 22:11:35 +0200
Subject: [PATCH] Include `bits/types/locale_t`

---
 numpy/_core/feature_detection_locale.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/numpy/_core/feature_detection_locale.h b/numpy/_core/feature_detection_locale.h
index 59e78936d8d8..ccb0dc7da907 100644
--- a/numpy/_core/feature_detection_locale.h
+++ b/numpy/_core/feature_detection_locale.h
@@ -1,2 +1,5 @@
 #pragma GCC diagnostic ignored "-Wnonnull"
+#ifdef _GNU_SOURCE
+# include <bits/types/locale_t.h>
+#endif
 long double strtold_l(const char*, char**, locale_t);