GCC fails to compile the following snippet:

template <int> struct ItT {};
template <typename> int f ();
template <typename T> ItT<sizeof(f<T>())> g ();
void h () { g<int>(); }

It says:

t.cpp:4: sorry, unimplemented: call_expr cannot be mangled due to a defect in
the C++ ABI

Clearly this bug is known (by whoever wrote that error message), but currently
there is no entry for it in GCC Bugzilla so that's why I'm reporting it.

I'm using GCC version 3.4 20030723