http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53349
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
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CC| |daniel.kruegler at
| |googlemail dot com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com>
2012-05-15 10:53:22 UTC ---
I can confirm this for gcc 4.8.0 20120513 (experimental).
A current workaround is to replace the member declaration
constexpr Foo(const Foo<N-1> a) : m_a(a) {}
by
constexpr Foo(const Foo<N-1>& a) : m_a(a) {}
The following is a simplified form of the problem:
template<int N>
struct Foo {
constexpr Foo(const Foo<N-1> a) : m_a(a) {} // Line 3
constexpr Foo(const Foo<N> &a) : m_a(a.m_a) {}
Foo<N-1> m_a;
};
template <> struct Foo<0> {};
constexpr auto res = Foo<2>(Foo<1>(Foo<0>())); // Line 10
10| in constexpr expansion of 'Foo<2>(Foo<1>((*(const Foo<1>*)(&
Foo<1>((Foo<0>((* & Foo<0>())), Foo<0>()))))))'|
3| in constexpr expansion of '((Foo<2>*)this)->Foo<2>::m_a.Foo<N>::Foo<1>((* &
a))'|
10|internal compiler error: in cxx_eval_indirect_ref, at cp/semantics.c:7408|
