gcc/testsuite/g++.dg/concepts/template-parm11.C


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// { dg-options "-std=c++17 -fconcepts" }

template<typename T>
concept bool NameProvider()
{
  return requires(){
    typename T::_name_t::template _member_t<int>;
  };
}

template<NameProvider... ColSpec>
void getTable(const ColSpec&...)
{}

int f()
{
  getTable(7, 'a'); // { dg-error "cannot call" }
};