From 227351345d0caa596eff8325144f15b15f704c08 Mon Sep 17 00:00:00 2001
From: Jonathan Wakely <jwakely@redhat.com>
Date: Thu, 12 Jan 2023 13:03:01 +0000
Subject: libstdc++: Do not include <system_error> in concurrency headers

The <condition_variable>, <mutex>, and <shared_mutex> headers use
std::errc constants, but don't use std::system_error itself. They only
use the __throw_system_error(int) function, which is defined in
<bits/functexcept.h>.

By including the header for the errc constants instead of the whole of
<system_error> we avoid depending on the whole std::string definition.

libstdc++-v3/ChangeLog:

	* include/bits/std_mutex.h: Remove <system_error> include.
	* include/std/condition_variable: Add <bits/error_constants.h>
	include.
	* include/std/mutex: Likewise.
	* include/std/shared_mutex: Likewise.
---
 libstdc++-v3/include/std/mutex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libstdc++-v3/include/std/mutex')

diff --git a/libstdc++-v3/include/std/mutex b/libstdc++-v3/include/std/mutex
index aca5f91..4eedbe5 100644
--- a/libstdc++-v3/include/std/mutex
+++ b/libstdc++-v3/include/std/mutex
@@ -40,8 +40,8 @@
 #include <tuple>
 #include <exception>
 #include <type_traits>
-#include <system_error>
 #include <bits/chrono.h>
+#include <bits/error_constants.h>
 #include <bits/std_mutex.h>
 #include <bits/unique_lock.h>
 #if ! _GTHREAD_USE_MUTEX_TIMEDLOCK
-- 
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