// { dg-options "-std=gnu++0x" } | |
struct unused; | |
template<typename T1 = unused, typename T2 = unused, typename T3 = unused, | |
typename T4 = unused, typename T5 = unused, typename T6 = unused> | |
struct tuple {}; | |
template<typename... Args> | |
void foo(tuple<Args...>) { } // { dg-error "cannot expand" } |