AMDG Christian Henning wrote:
Hi there, I'm doing some job interview preparations. Always a good idea to go back to the basics and tinker around a bit. I came across a surprising behavior when using std::vector, std::auto_ptr, and boost::bind.
auto_ptr and vector don't mix. Use unique_ptr instead.
Basically, I have a vector of auto_ptrs which is copied into a second vector, thus the first vector's auto_ptr loss their resource and point to nowhere. Basic stuff, as I said. Now, when I try to use an auto_ptr from the first vector using boost::bind everything still works. Meaning the code doesn't fail, although it should. I find that surprising. Why is boost::bind recreating the resource?
It isn't. Boost.Bind passes the arguments by reference, so the auto_ptr is never copied. In Christ, Steven Watanabe