https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82544
--- Comment #3 from Igor Kozhukhov <ikozhukhov at gmail dot com> --- additional info by mdb: igork@bld13:~/builds/igork/du2/components/gcc-6$ mdb core Loading modules: [ libc.so.1 ld.so.1 ] > $C ffffffff7fffd1a1 libc.so.1`_lwp_kill+8(1, 6, 0, 0, 0, 0) ffffffff7fffd251 libc.so.1`raise+0x14(0, 0, ffffffff7fffdbb0, fffffffe7e10dfa4, fffffffe7e2127a8, 0) ffffffff7fffd301 libc.so.1`abort+0xac(5, ffffffff7fffdca0, ffffffffffffffff, 0, 0, ffffffff7fffe821) ffffffff7fffd3e1 libgcc_s.so.1`uw_init_context_1+0x334(ffffffff7fffe430, ffffffff7fffef00, fffffffe39ec3ddc, fffffffe39ec3ddc, ffffffff7fffdca0, c00) ffffffff7fffdb81 libgcc_s.so.1`_Unwind_Backtrace+0x18(fffffffe39ec3cc0, ffffffff7fffefb0, 1000, ffffffff7fffe820, ffffffff7fffe430, ffffffff6e900000) ffffffff7fffe701 libgo.so.9.0.0`backtrace_full+0x70(ffffffff6e900000, 1, fffffffe39b51480, fffffffe39b516f4, ffffffff7ffff098, fffffffe3a5c4e50) ffffffff7fffe7e1 libgo.so.9.0.0`runtime_callers+0x74(2, ffffffff7ffff160, 20, 0, fffffffe3a5ec230, fffffffe3a5fb24c) ffffffff7fffe8b1 libgo.so.9.0.0`runtime_MProf_Malloc+0x20(c208000000, 10, 0, fffffffe39b6afb4, ffffffff7ffff160, ffffffff6eb00010) ffffffff7fffef61 libgo.so.9.0.0`runtime_mallocgc+0x22c(1, ffffffff6eb00000, 10, 80000, fffffffe3a5fab30, c208000000) ffffffff7ffff011 libgo.so.9.0.0`runtime_mallocinit+0x13c(10000000000, 1104001, ffffffff7ffff8cf, c000000000, 800000000000, fffffffe3a5fab30) ffffffff7ffff0d1 libgo.so.9.0.0`runtime_schedinit+0x90(1, ffffffff7ffffbb8, 8, ffffffff6ec02a30, fffffffe3a5fa0d8, fffffffe3a5fab30) ffffffff7ffff1a1 main+0x80(1, ffffffff7ffffbb8, ffffffff7ffffbc8, ffffffffffffffff, 3e8, 3e8) ffffffff7ffff251 _start_crt+0x6c(1, ffffffff7ffffbb8, ffffffff6f61c5e4, 0, 0, 0) ffffffff7ffff301 _start+0x14(0, 0, 0, 0, 0, 0) > ffffffff7fffdb81::dis mdb: address is not properly aligned as we can see - addresses not aligned on SPARC64 - it is very important.
