* Re: ptrace compile failure with gcc-8.2 on 32-bit powerpc
@ 2019-01-18 8:27 Mathieu Malaterre
0 siblings, 0 replies; 2+ messages in thread
From: Mathieu Malaterre @ 2019-01-18 8:27 UTC (permalink / raw)
To: linuxppc-dev, Meelis Roos, Michael Ellerman
> Yeah I noticed this just yesterday.
Just FYI this has been accepted as regression in gcc, and fixed is
provided for GCC 9.0:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88273
^ permalink raw reply [flat|nested] 2+ messages in thread
* ptrace compile failure with gcc-8.2 on 32-bit powerpc
@ 2018-08-16 7:44 Meelis Roos
0 siblings, 0 replies; 2+ messages in thread
From: Meelis Roos @ 2018-08-16 7:44 UTC (permalink / raw)
To: linux-powerpc, Linux Kernel list
After upgrading my distro compiler to gcc-8.2, Linux fails to compile on=20
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 =A1memcpy=A2,
inlined from =A1user_regset_copyin=A2 at ./include/linux/regset.h:295=
:4,
inlined from =A1vr_set=A2 at arch/powerpc/kernel/ptrace.c:619:9:
./include/linux/string.h:345:9: error: =A1__builtin_memcpy=A2 offset [-52=
7, -529] is out of the bounds [0, 16] of object =A1vrsave=A2 with type =A1=
union <anonymous>=A2 [-Werror=3Darray-bounds]
return __builtin_memcpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/kernel/ptrace.c: In function =A1vr_set=A2:
arch/powerpc/kernel/ptrace.c:614:5: note: =A1vrsave=A2 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 =A1memcpy=A2,
inlined from =A1user_regset_copyout=A2 at ./include/linux/regset.h:27=
0:4,
inlined from =A1vr_get=A2 at arch/powerpc/kernel/ptrace.c:572:9:
./include/linux/string.h:345:9: error: =A1__builtin_memcpy=A2 offset [-52=
7, -529] is out of the bounds [0, 16] of object =A1vrsave=A2 with type =A1=
union <anonymous>=A2 [-Werror=3Darray-bounds]
return __builtin_memcpy(p, q, size);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/powerpc/kernel/ptrace.c: In function =A1vr_get=A2:
arch/powerpc/kernel/ptrace.c:567:5: note: =A1vrsave=A2 declared here
} vrsave;
^~~~~~
cc1: all warnings being treated as errors
make[1]: *** [scripts/Makefile.build:311: arch/powerpc/kernel/ptrace.o] E=
rror 1
--=20
Meelis Roos (mroos@linux.ee)
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