accumulate with multiplies as reduction returns wrong result.

[Kok How Teh via Gcc-bugs]

vector<long> a = {3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14};
assert(43589145600 == accumulate(a.begin(), a.end(), 1, multiplies()));

That assertion fails! What do I miss?