https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68383
--- Comment #7 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Created attachment 36749 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36749&action=edit Somewhat reduced testcase markus@x4 tmp % g++ -w -c -std=c++14 write.ii markus@x4 tmp % nm write.o | grep _ZSt7forwardIRKZN 0000000000000000 W _ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE markus@x4 tmp % clang++ -w -c -std=c++14 write.ii markus@x4 tmp % nm write.o | grep _ZSt7forwardIRKZN 0000000000000000 W _ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC1EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
