[Bug c++/54706] New: -fsyntax-only suppresses a compilation error

[dave at boostpro dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54706

             Bug #: 54706
           Summary: -fsyntax-only suppresses a compilation error
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dave@boostpro.com


Compile the following with -std=c++11 both with and without -fsyntax-only and
note the difference:

template<class...Fs> struct pair;

template<class F1, class...Fs>
struct pair<F1, Fs...> : F1, Fs...
{
    typedef pair type;
};

template<class...Fs>
typename pair<Fs...>::type make(Fs...x)
{ return pair<Fs...>(x...); }

struct X {}; struct Y{};

auto a = make(X(),Y());