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[Bug c++/68383] Demangler stack overflow


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

--- Comment #10 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
markus@x4 libiberty % ./a.out
_ZSt7forwardIRKZN5Write14DataMapGrammarISt20back_insert_iteratorISsEEC4EvEUlRT_E_EOS5_RNSt16remove_referenceIS5_E4typeE
typed name
  template
    qualified name
      name 'std'
      name 'forward'
    template argument list
      reference
        const
          local name
            typed name
              qualified name
                template
                  qualified name
                    name 'Write'
                    name 'DataMapGrammar'
                  template argument list
                    template
                      qualified name
                        name 'std'
                        name 'back_insert_iterator'
                      template argument list
                        standard substitution std::string
                constructor 4
                  name 'DataMapGrammar'
              function type
                argument list
            lambda 0
              argument list
                reference
                  template parameter 0
  function type
    rvalue reference
      template parameter 0
    argument list
      reference
        qualified name
          template
            qualified name
              standard substitution std
              name 'remove_reference'
            template argument list
              template parameter 0
          name 'type'
ASAN:SIGSEGV
=================================================================
==12223==ERROR: AddressSanitizer: stack-overflow on address 0x7ffe00004e88 (pc
0x0000004046fd bp 0x0fffc0000a20 sp 0x7ffe00004e80 T0)

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