[Bug c++/68383] Demangler stack overflow

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68383

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
@fiesh@zefix.tv 
Ian asks:
»Was the symbol
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
generated by g++ or clang?  That is, is it supposed to demangle?  If so, do you
have the source code?»