https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66368
--- Comment #5 from Matthias Klose <doko at gcc dot gnu.org> --- building trunk libgo with -fstack-protector-strong yields: $ go version fatal error: unexpected signal during runtime execution [signal 0xb code=0x1 addr=0x3] goroutine 16 [running]: :0 :0 :0 :0 [...] building libgo and libbacktrace with -fstack-protector-strong yields: fatal error: unexpected signal during runtime execution [signal 0xb code=0x1 addr=0x3] goroutine 16 [running]: runtime_dopanic ../../../src/libgo/runtime/panic.c:131 runtime_throw ../../../src/libgo/runtime/panic.c:193 sig_panic_leadin ../../../src/libgo/runtime/go-signal.c:247 sig_panic_info_handler ../../../src/libgo/runtime/go-signal.c:281 :0 __go_go ../../../src/libgo/runtime/proc.c:2328 runtime_main ../../../src/libgo/runtime/proc.c:598 goroutine 0 [idle]: panic during panic goroutine 0 [idle]: runtime_dopanic ../../../src/libgo/runtime/panic.c:131 runtime_startpanic ../../../src/libgo/runtime/panic.c:100 runtime_throw ../../../src/libgo/runtime/panic.c:191 runtime_gogo ../../../src/libgo/runtime/proc.c:251 runtime_tracebackothers ../../../src/libgo/runtime/proc.c:767 runtime_dopanic ../../../src/libgo/runtime/panic.c:139 runtime_throw ../../../src/libgo/runtime/panic.c:193 sig_panic_leadin ../../../src/libgo/runtime/go-signal.c:247 sig_panic_info_handler ../../../src/libgo/runtime/go-signal.c:281 :0 __go_go ../../../src/libgo/runtime/proc.c:2328 runtime_main ../../../src/libgo/runtime/proc.c:598