[Bug c++/33091] [c++0x] ICE using remove_reference on variadic param pack

[chris dot fairles at gmail dot com]

------- Comment #5 from chris dot fairles at gmail dot com  2007-08-28 12:32 -------
The following code snippet also causes an ICE (g++43 (GCC) 4.3.0 20070828
(experimental) with -Wall, -g and -std=c++0x)
test4.cpp: In instantiation of ‘A<int>’:
test4.cpp:11:   instantiated from here
test4.cpp:7: internal compiler error: tree check: expected tree_vec, have
type_pack_expansion in tsubst_copy_and_build, at cp/pt.c:10434


#include <type_traits>

template <typename... T>
struct A {
    template <typename... U>
    typename std::enable_if<(sizeof...(T) == sizeof...(U)),A&>::type
    operator=(A<U...> const&) {}
};

int main() {
    A<int> a;
    A<int,double> b;
    a = b;
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33091