The updates of devel/powerpc64-* to 6.2.0 have killed my ability to buildkernel targeting powerpc64: SIGSEGV's

[Mark Millard]

I have submitted bugzilla 215350:

devel/powerpc64-gcc -r428604: The 6.2.0 based gcc (indirectly?) gets SIGSEGV building src/sys/modules/agp/agp_if.o but ctfconvert involved

Attempting to build src/sys/modules/agp/agp_if.o ets a SIGSEGV reported.

Despite "segmentation fault" being reported for a powerpc64-gcc command
the only .core file was for ctfconvert instead. ctfconvert does report
its own death as well --but multiple times yet with only one core file
present.

With clang 3.9.0 issues and this there seem to be no modern toolchain
for head for which I can do both buildworld and buildkernel and end up
with a bootable PowerMac G5 powerpc64 system.

For powerpc64 things have definitely regressed overall despite clang
progressing some from where it was for 3.8.0 .


Note: The problem was a test without forcing older devel/*-binutils
or other such. I've yet to try such a mix-and-match involving
xtoolchain.


Extracted from the typescript:

# grep "ERROR" /root/sys_typescripts/typescript_make_powerpc64vtsc_nodebug_incl_clang_xtoolchain_kernel-amd64-host-2016-12-16:14:43:08 | more
ERROR: ctfconvert: die 10273: failed to get ref: No entry found [dwarf_attrval_unsigned(177)]
ERROR: ctfmerge: No ctf sections found to merge
.ERROR_TARGET='agp_if.o'
.ERROR_META_FILE='/usr/obj/powerpc64vtsc_xtoolchain_kernel/powerpc.powerpc64/usr/src/sys/GENERIC64vtsc-NODBG/modules/usr/src/sys/modules/agp/agp_if.o.meta'
.ERROR_TARGET='agp_if.o'
.ERROR_META_FILE='/usr/obj/powerpc64vtsc_xtoolchain_kernel/powerpc.powerpc64/usr/src/sys/GENERIC64vtsc-NODBG/modules/usr/src/sys/modules/agp/agp_if.o.meta'
.ERROR_TARGET='all_subdir_agp'
.ERROR_META_FILE=''
ERROR: ctfconvert: die 26932: failed to get ref: No entry found [dwarf_attrval_unsigned(177)]
.ERROR_TARGET=''
.ERROR_META_FILE=''
.ERROR_TARGET='all_subdir_acl_posix1e'
.ERROR_META_FILE=''
.ERROR_TARGET=''
.ERROR_META_FILE=''
.ERROR_TARGET='all_subdir_acl_nfs4'
.ERROR_META_FILE=''
ERROR: ctfconvert: die 46063: failed to get ref: No entry found [dwarf_attrval_unsigned(177)]
.ERROR_TARGET=''
.ERROR_META_FILE=''
.ERROR_TARGET='all_subdir_ae'
.ERROR_META_FILE=''
ERROR: ctfconvert: die 52618: failed to get ref: No entry found [dwarf_attrval_unsigned(177)]
. . .


===
Mark Millard
markmi at dsl-only.net