From: Meelis Roos <mroos@linux.ee>
To: linux-powerpc@vger.kernel.org,
Linux Kernel list <linux-kernel@vger.kernel.org>
Subject: ptrace compile failure with gcc-8.2 on 32-bit powerpc
Date: Thu, 16 Aug 2018 10:44:56 +0300 (EEST) [thread overview]
Message-ID: <alpine.LRH.2.21.1808161041350.16413@math.ut.ee> (raw)
After upgrading my distro compiler to gcc-8.2, Linux fails to compile on
32-bit powerpc (tested with 4.17, 4.18 and v4.18-7873-gf91e654474d4).
CC arch/powerpc/kernel/ptrace.o
In file included from ./include/linux/bitmap.h:9,
from ./include/linux/cpumask.h:12,
from ./include/linux/rcupdate.h:44,
from ./include/linux/rculist.h:11,
from ./include/linux/pid.h:5,
from ./include/linux/sched.h:14,
from arch/powerpc/kernel/ptrace.c:19:
In function ‘memcpy’,
inlined from ‘user_regset_copyin’ at ./include/linux/regset.h:295:4,
inlined from ‘vr_set’ at arch/powerpc/kernel/ptrace.c:619:9:
./include/linux/string.h:345:9: error: ‘__builtin_memcpy’ offset [-527, -529] is out of the bounds [0, 16] of object ‘vrsave’ with type ‘union <anonymous>’ [-Werror=array-bounds]
return __builtin_memcpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/kernel/ptrace.c: In function ‘vr_set’:
arch/powerpc/kernel/ptrace.c:614:5: note: ‘vrsave’ declared here
} vrsave;
^~~~~~
In file included from ./include/linux/bitmap.h:9,
from ./include/linux/cpumask.h:12,
from ./include/linux/rcupdate.h:44,
from ./include/linux/rculist.h:11,
from ./include/linux/pid.h:5,
from ./include/linux/sched.h:14,
from arch/powerpc/kernel/ptrace.c:19:
In function ‘memcpy’,
inlined from ‘user_regset_copyout’ at ./include/linux/regset.h:270:4,
inlined from ‘vr_get’ at arch/powerpc/kernel/ptrace.c:572:9:
./include/linux/string.h:345:9: error: ‘__builtin_memcpy’ offset [-527, -529] is out of the bounds [0, 16] of object ‘vrsave’ with type ‘union <anonymous>’ [-Werror=array-bounds]
return __builtin_memcpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/kernel/ptrace.c: In function ‘vr_get’:
arch/powerpc/kernel/ptrace.c:567:5: note: ‘vrsave’ declared here
} vrsave;
^~~~~~
cc1: all warnings being treated as errors
make[1]: *** [scripts/Makefile.build:311: arch/powerpc/kernel/ptrace.o] Error 1
--
Meelis Roos (mroos@linux.ee)
next reply other threads:[~2018-08-16 7:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-16 7:44 Meelis Roos [this message]
2018-08-16 12:06 ` ptrace compile failure with gcc-8.2 on 32-bit powerpc Michael Ellerman
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