From b4b1c6aa6d28d3afe989a6dc3210606a3d55a367 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Fri, 13 Jan 2023 16:37:57 +0000
Subject: [PATCH] libstdc++: Add <errno.h> to <bits/std_mutex.h>

This needs to be included explicitly now that we don't include all of
<system_error> here.

libstdc++-v3/ChangeLog:

	* include/bits/std_mutex.h: Include <errno.h>.
---
 libstdc++-v3/include/bits/std_mutex.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libstdc++-v3/include/bits/std_mutex.h b/libstdc++-v3/include/bits/std_mutex.h
index bc51535..f74ddc4 100644
--- a/libstdc++-v3/include/bits/std_mutex.h
+++ b/libstdc++-v3/include/bits/std_mutex.h
@@ -36,6 +36,7 @@
 # include <bits/c++0x_warning.h>
 #else
 
+#include <errno.h> // EBUSY
 #include <bits/functexcept.h>
 #include <bits/gthr.h>
 
-- 
2.7.4