[Bug c++/42634] New: ICE with -g -O2 -std=c++0x in copy_fn_p, at cp/decl.c:9973

["wouter dot vermaelen at scarlet dot be" <gcc-bugzilla at gcc dot gnu dot org>]

> cat bug.ii

template<typename T> T declval();
template<typename T, typename... Args> struct is_constructible {
        template<typename T1, typename... Args1>
                static decltype(T1(declval<Args1>()...), char()) test();
        static const bool value = sizeof(test<T, Args...>()) == 1;
};
template<bool> struct enable_if {
        typedef void type;
};
template<class T1, class T2> struct pair {
        template<class U2,
                 class = typename enable_if<is_constructible<T2,
U2&&>::value>::type>
        pair(const T1&, U2&&) { }
};
struct string {
        string() : p(0) {}
        char* p;
};
struct Foo {
          string s;
          int i;
};
void f() {
        pair<int, Foo>(1, Foo());
}


> g++ -g -O2 -std=c++0x bug.ii
bug.ii: In instantiation of ?const bool is_constructible<Foo, int&&>::value?:
bug.ii:24:26:   instantiated from here
bug.ii:5:58: internal compiler error: in copy_fn_p, at cp/decl.c:9973


I'm using SVN revision trunk@155658 on linux x86_64.


-- 
           Summary: ICE with -g -O2 -std=c++0x   in copy_fn_p, at
                    cp/decl.c:9973
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: wouter dot vermaelen at scarlet dot be


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42634