On Thu, 19 Dec 2013, Henrik Mannerström wrote:
This question came up on SO ( http://stackoverflow.com/questions/7320520/optimizing-the-number-of-constructor-calls) and I was baffled since it went against the mantra "let the compiler do the copying". Do you have an idea of what is going on? Why is the commented version of operator+ worse?
See: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57176 -- Marc Glisse
