https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70560
--- Comment #5 from James Hilliard <james.hilliard1 at gmail dot com> --- (In reply to Jonathan Wakely from comment #4) > (In reply to James Hilliard from comment #2) > > We've been hitting a bug in buildroot with an application(apcupsd) that > > links against libsupc++.a directly. > > Maybe I missed it, but I don't see the linker command in the build log. That might be somewhere here: http://autobuild.buildroot.org/results/3be/3bedf404de0ea42ee3ba624cded65d310a847af9/apcupsd-3.14.14/config.log > Could you show the command that's failing? Could you check if the symbol > _ZN9__gnu_cxx18__exchange_and_addEPVii is actually defined in libsupc++.a or > if something else like _ZN9__gnu_cxx18__exchange_and_addEPVll is defined > instead? The toolchain in that failed build is available here: http://autobuild.buildroot.org/toolchains/tarballs/br-sparc-uclibc-2020.02.tar.bz2 It appears reference to _ZN9__gnu_cxx18__exchange_and_addEPVii are in the following objects in libsupc++.a. $ nm eh_throw.o U __cxa_begin_catch U __cxa_free_exception U __cxa_get_globals 00000000 T __cxa_init_primary_exception 00000000 T __cxa_rethrow 00000000 T __cxa_throw U _GLOBAL_OFFSET_TABLE_ w __pthread_key_create 00000000 W __sparc_get_pc_thunk.l7 U _Unwind_RaiseException U _Unwind_Resume_or_Rethrow 00000000 t _ZL23__gxx_exception_cleanup19_Unwind_Reason_CodeP17_Unwind_Exception U _ZN10__cxxabiv111__terminateEPFvvE U _ZN9__gnu_cxx18__exchange_and_addEPVii U _ZSt13get_terminatev U _ZSt14get_unexpectedv U _ZSt9terminatev $ nm eh_tm.o U __cxa_call_unexpected U __cxa_free_dependent_exception U __cxa_free_exception U __cxa_get_globals_fast 00000000 T __cxa_tm_cleanup 00000000 V DW.ref.__gxx_personality_v0 U _GLOBAL_OFFSET_TABLE_ U __gxx_personality_v0 w __pthread_key_create 00000000 W __sparc_get_pc_thunk.l7 U _Unwind_DeleteException U _Unwind_Resume 00000000 t _ZL22free_any_cxa_exceptionP17_Unwind_Exception U _ZN9__gnu_cxx18__exchange_and_addEPVii $ nm eh_ptr.o U __cxa_allocate_dependent_exception U __cxa_begin_catch U __cxa_free_dependent_exception U __cxa_free_exception U __cxa_get_globals 00000000 V DW.ref.__gxx_personality_v0 U _GLOBAL_OFFSET_TABLE_ U __gxx_personality_v0 w __pthread_key_create 00000000 W __sparc_get_pc_thunk.l7 U _Unwind_RaiseException 00000000 t _ZL33__gxx_dependent_exception_cleanup19_Unwind_Reason_CodeP17_Unwind_Exception U _ZN10__cxxabiv111__terminateEPFvvE U _ZN9__gnu_cxx12__atomic_addEPVii U _ZN9__gnu_cxx18__exchange_and_addEPVii 00000000 T _ZNKSt15__exception_ptr13exception_ptr20__cxa_exception_typeEv 00000000 T _ZNKSt15__exception_ptr13exception_ptr6_M_getEv 00000000 T _ZNKSt15__exception_ptr13exception_ptrcvMS0_FvvEEv 00000000 T _ZNKSt15__exception_ptr13exception_ptrntEv 00000000 T _ZNSt15__exception_ptr13exception_ptr10_M_releaseEv 00000000 T _ZNSt15__exception_ptr13exception_ptr18_M_safe_bool_dummyEv 00000000 T _ZNSt15__exception_ptr13exception_ptr4swapERS0_ 00000000 T _ZNSt15__exception_ptr13exception_ptr9_M_addrefEv 00000000 T _ZNSt15__exception_ptr13exception_ptraSERKS0_ 00000000 T _ZNSt15__exception_ptr13exception_ptrC1EMS0_FvvE 00000000 T _ZNSt15__exception_ptr13exception_ptrC1EPv 00000000 T _ZNSt15__exception_ptr13exception_ptrC1ERKS0_ 00000000 T _ZNSt15__exception_ptr13exception_ptrC1Ev 00000000 T _ZNSt15__exception_ptr13exception_ptrC2EMS0_FvvE 00000000 T _ZNSt15__exception_ptr13exception_ptrC2EPv 00000000 T _ZNSt15__exception_ptr13exception_ptrC2ERKS0_ 00000000 T _ZNSt15__exception_ptr13exception_ptrC2Ev 00000000 T _ZNSt15__exception_ptr13exception_ptrD1Ev 00000000 T _ZNSt15__exception_ptr13exception_ptrD2Ev 00000000 T _ZNSt15__exception_ptreqERKNS_13exception_ptrES2_ 00000000 T _ZNSt15__exception_ptrneERKNS_13exception_ptrES2_ U _ZSt13get_terminatev U _ZSt14get_unexpectedv 00000000 T _ZSt17current_exceptionv 00000000 T _ZSt17rethrow_exceptionNSt15__exception_ptr13exception_ptrE U _ZSt9terminatev
