[Bug gdb/18805] New: GDB crushes on loading symbols (init class with tuple)

[tower120 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18805

            Bug ID: 18805
           Summary: GDB crushes on loading symbols (init class with tuple)
           Product: gdb
           Version: 7.9
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: tower120 at gmail dot com
  Target Milestone: ---

GDB <= 7.9.1 crushes (seg fault) on loading symbols with the following code:


template < class FnSequence = std::tuple<> >
struct LazyFn{
    const FnSequence fn_sequence;

    LazyFn(FnSequence fn_sequence = std::tuple<>() )
            :fn_sequence(fn_sequence){}
};


int main() {
  auto f1 = [](auto&& x){cout << "Hello, World!" << endl;};
  using F1 = decltype(f1);
  auto lazy = LazyFn< std::tuple<F1> >(std::tuple<F1>(f1));

  return 0;
}

-----------------------------------------------------------------
With additional function it works ok:


template <class T>
auto make_lazy(T t){
    return LazyFn<T>(t);
}

auto lazy = make_lazy(f1);

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