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Template template parameters and variadic templates with gcc 4.4

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情深已故
情深已故 2021-01-11 12:47

I\'m using gcc 4.4 on Debian squeeze. Consider the following code.

#include 
#include 
using std::map;
using std::string;

// Args l
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  • 攒了一身酷
    攒了一身酷 (楼主)
    2021-01-11 13:48

    As discussed in the edits, my question appears to tickle the same bug as the linked question, Variadic template templates and perfect forwarding. In particular, the workaround given there in a link also works in my case. The modified code that works is as follows:

    #include 
#include 
using std::map;
using std::string;

template  class C,
      typename... Args>
struct X
{
  typedef C type;
};

template  class C,
      typename... Args>
typename X::type foo()
{
  C x;
  return x;
}

int main(void)
{
  map a = foo();
}

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