http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53646
--- Comment #18 from Michael Matz <matz at gcc dot gnu.org> 2012-06-21 14:36:29 UTC --- Just today I had to debug another crash in our package management code. This time a c++98 library picked up a std::list operator= from a c++11 library resulting in a crash. See https://bugzilla.novell.com/show_bug.cgi?id=767666 It was all quite non-obvious, as many libraries and packages are involved and it's not easy to find out what the problematic symbol resolution is. This may be an intended ABI breakage in c++11 mode (the std::list change I mean), but it has all the same problems as the unintended bug in std::pair.