c++ 11 regex栈溢出/ VS2012

I'm in the process of converting some older Boost regex code to C++11, and I stumbled upon an issue with one of my test cases. Here is a scenario which causes a stack overflow exception using std::regex, but worked fine with boost::regex. I have not changed the regular expression pattern, and have verified the pattern is what I want. It seems this particular string input fragment is causing the stack overflow. Using VS2012, x64 debug build:I'm in the process of converting some older Boo