https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66153
--- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
A little more reduced:
template<class obj> struct c { obj data; };
struct r {};
template<int N,class obj> obj g(const obj &arg);
template<int N,class obj>
auto g(const c<obj> & arg)
-> c<decltype(g<N>(arg.data))>
{
return c<decltype(g<N>(arg.data))>{};
}
int main()
{
c<r > array;
g<1>(array);
}
---- CUT ----
Without the guide for the return type, GCC accepts the code. Somehow GCC is
messing up g<N>, Removing the template argument N also allows GCC to accept the
code.
