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From b15d8d0754bb545ba10d0cfba8bbfdfb22a62c38 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Sun, 20 Feb 2022 22:03:14 -0800
Subject: [PATCH] futex: fix build on 32-bit architectures using 64-bit time_t
Fix the following build failure on 32-bit architectures using 64-bit
time_t (e.g. riscv32):
| ./boost/fiber/detail/futex.hpp:31:23: error: use of undeclared identifier 'SYS_futex'
| return ::syscall( SYS_futex, addr, op, x, nullptr, nullptr, 0);
| ^
| 1 error generated.
Upstream-Status: Submitted [https://github.com/boostorg/fiber/pull/292]
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
boost/fiber/detail/futex.hpp | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/boost/fiber/detail/futex.hpp b/boost/fiber/detail/futex.hpp
index e64bd5990..d0353e9e5 100644
--- a/boost/fiber/detail/futex.hpp
+++ b/boost/fiber/detail/futex.hpp
@@ -12,6 +12,10 @@
#include <boost/fiber/detail/config.hpp>
+#ifndef SYS_futex
+#define SYS_futex SYS_futex_time64
+#endif
+
#if BOOST_OS_LINUX
extern "C" {
#include <linux/futex.h>
--
2.35.1
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