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From: "antoshkka at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/55576] New: Fails to compile a call to template member function
Date: Mon, 03 Dec 2012 15:27:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D55576

             Bug #: 55576
           Summary: Fails to compile a call to template member function
    Classification: Unclassified
           Product: gcc
           Version: 4.7.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: antoshkka@gmail.com


Created attachment 28860
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=3D28860
Output of `gcc -v -save-temps -Wall -Wextra main.cpp`

When compiling following code:

struct factory {
 template <typename T>
 void * apply(void * address)
 {
  return new (address) T;
 }
};

template <typename T>
struct apply {
 template <typename FactoryT>
 void* operator()(FactoryT const& f, void * address) {
  return f.template apply<T>(address);
 }
};

int main() {
 int place;
 apply<int>()(factory(), &place);
 return 0;
}


Tries to instantiate structure `apply` instead of calling a `factory` member
function `apply` (prints error: invalid use of =E2=80=98struct apply<T>=E2=
=80=99).