Is this C++11 regex error me or the compiler?

Question

OK, this isn\'t the original program I had this problem in, but I duplicated it in a much smaller one. Very simple problem.

main.cpp:

#include 

        

Answer 1

Regex support improved between gcc 4.8.2 and 4.9.2. For example, the regex =[A-Z]{3} was failing for me with:

Regex error

After upgrading to gcc 4.9.2, it works as expected.