[boost] boost::aligned_storage broken on VC12 for alignment values of 8

Very surprising, but easily reproducible with VC12 (2013), Release or Debug configuration, Win32 platform: the following program will often* throw: #include #include <cstdint> int main() { boost::aligned_storage<8, 8>::type a; if (((std::uintptr_t)&a % 8) != 0) { throw 1; } } * Four of every five times it failed because the storage was only 4-byte aligned, not 8-byte aligned. Does not reproduce for x64 builds, just x86 builds. Does not reproduce with alignment values other than 8. Glen