------- Comment #1 from richard-gccbugzilla at metafoo dot co dot uk 2009-07-31 15:26 ------- Working draft N2914, 20.3.3 says:
template <VariableType T1, VariableType T2> struct pair { [...] requires CopyConstructible<T1> && CopyConstructible<T2> pair(const T1 &x, const T2 &y); ... and this is (modulo concept constraints) present in stl_pair.h, but I imagine that an argument of 0 doesn't select this constructor. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40925