https://github.com/urcu/userspace-rcu/commit/6fa8b4f80f1d2efbc90fc6d2a5fb0dc1d7fd2a19

From 6fa8b4f80f1d2efbc90fc6d2a5fb0dc1d7fd2a19 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@sury.org>
Date: Fri, 17 Mar 2023 16:44:10 +0100
Subject: [PATCH] Fix: use __noreturn__ for C11-compatibility
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The noreturn convenience macro provided by stdnoreturn.h might get
included before urcu headers, use __noreturn__ for better compatibility
with code using <stdnoreturn.h> header.

Signed-off-by: Ondřej Surý <ondrej@sury.org>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
--- a/include/urcu/uatomic/generic.h
+++ b/include/urcu/uatomic/generic.h
@@ -38,7 +38,7 @@ extern "C" {
 #endif
 
 #if !defined __OPTIMIZE__  || defined UATOMIC_NO_LINK_ERROR
-static inline __attribute__((always_inline, noreturn))
+static inline __attribute__((always_inline, __noreturn__))
 void _uatomic_link_error(void)
 {
 #ifdef ILLEGAL_INSTR
--- a/src/urcu-call-rcu-impl.h
+++ b/src/urcu-call-rcu-impl.h
@@ -1064,7 +1064,7 @@ void urcu_register_rculfhash_atfork(struct urcu_atfork *atfork)
  * This unregistration function is deprecated, meant only for internal
  * use by rculfhash.
  */
-__attribute__((noreturn))
+__attribute__((__noreturn__))
 void urcu_unregister_rculfhash_atfork(struct urcu_atfork *atfork __attribute__((unused)))
 {
 	urcu_die(EPERM);
--- a/tests/regression/rcutorture.h
+++ b/tests/regression/rcutorture.h
@@ -572,7 +572,7 @@ int stresstest(int nreaders)
  */
 
 static
-void usage(char *argv[]) __attribute__((noreturn));
+void usage(char *argv[]) __attribute__((__noreturn__));
 
 static
 void usage(char *argv[])
--- a/tests/utils/tap.h
+++ b/tests/utils/tap.h
@@ -41,7 +41,7 @@ __attribute__((format(TAP_PRINTF_FORMAT, 5, 6)))
 unsigned int _gen_result(int, const char *, const char *, unsigned int, const char *, ...);
 
 int plan_no_plan(void);
-__attribute__((noreturn))
+__attribute__((__noreturn__))
 int plan_skip_all(const char *);
 int plan_tests(unsigned int);