Messages in this thread | | | Date | Thu, 16 Aug 2018 10:44:56 +0300 (EEST) | From | Meelis Roos <> | Subject | ptrace compile failure with gcc-8.2 on 32-bit powerpc |
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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)
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