linux-kernel - arch linux with gcc 5.1.0 doesn't like include/linux/rcutiny.h

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Date:	Mon, 15 Jun 2015 17:11:16 -0700
From:	Jim Davis <jim.epost@...il.com>
To:	linux-kernel <linux-kernel@...r.kernel.org>,
	Paul McKenney <paulmck@...ux.vnet.ibm.com>,
	josh@...htriplett.org
Subject: arch linux with gcc 5.1.0 doesn't like include/linux/rcutiny.h

Just an FYI, but with next-20150615 (and I think some previous days too IIRC),

In file included from include/linux/rcupdate.h:429:0,
                 from include/linux/srcu.h:33,
                 from include/linux/notifier.h:15,
                 from include/linux/memory_hotplug.h:6,
                 from include/linux/mmzone.h:797,
                 from include/linux/gfp.h:5,
                 from include/linux/kmod.h:22,
                 from include/linux/module.h:13,
                 from kernel/rcu/rcutorture.c:28:
include/linux/rcutiny.h: In function ‘rcu_barrier_sched’:
include/linux/rcutiny.h:55:20: internal compiler error: Segmentation fault
 static inline void rcu_barrier_sched(void)
                    ^

That's with a random configuration file setting

# RCU Subsystem
CONFIG_TINY_RCU=y
CONFIG_RCU_EXPERT=y
CONFIG_SRCU=y
CONFIG_TASKS_RCU=y
CONFIG_RCU_STALL_COMMON=y
# CONFIG_TREE_RCU_TRACE is not set
CONFIG_RCU_KTHREAD_PRIO=0
# CONFIG_RCU_EXPEDITE_BOOT is not set
# RCU Debugging
CONFIG_PROVE_RCU=y
CONFIG_PROVE_RCU_REPEATEDLY=y
CONFIG_SPARSE_RCU_POINTER=y
CONFIG_RCU_TORTURE_TEST=m
# CONFIG_RCU_TORTURE_TEST_SLOW_PREINIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_INIT is not set
# CONFIG_RCU_TORTURE_TEST_SLOW_CLEANUP is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_TRACE=y
# CONFIG_RCU_EQS_DEBUG is not set

Jim
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