On 11/22/2016 02:26 PM, Nathan Sidwell wrote:
template<typename T>
void for2 (T &v)
{
}

void Foo ()
{
  auto lam_1 = [](int &) { };
  auto lam_2 = [](auto &) { }; // IIUC this is implicitly templatey

  for2 (lam_1);
  for2 (lam_2);  // What is the lambda's argument type?
}

We get 2 instantiations of for2:
    .type    _Z4for2IZ3FoovEUlRiE_EvRT_, @function
    .type    _Z4for2IZ3FoovEUlRT_E0_EvS1_, @function

Ok. looking further, I now think this is well formed.

lam_2's 'auto &' parameter creates an implicit templated function operator member function. We could have used 'Da' to refer to the auto parms, but we didn't. I think that means that the demangler needs to be taught that 'T[n]_' occurring inside a lambda's argument encoding means 'auto' and does not refer to any containing template instantiation name?

nathan

--
Nathan Sidwell

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