On Sunday 24 June 2012 09:52:10 Marc Mutz wrote: > A late-entry data point: > > libstdc++'s std::list is binary incompatible between -std=c++11 > and -std=c++98, because it adds a _M_size member. > > It's the most stupid change I can imagine, but it apparently means that the > GCC devs don't shoot for BC between C++11- and C++98-compiled code. I guess > that, at least for GCC users, it might therefore actually be a boon if a Qt > compiled in C++11 mode was incompatible with a Qt compiled in C++98 mode at, > say, the linker level, lest they ran into such hidden BiC issues unawares.
This is very unfortunate. This would mean that if you want to do a C++11 application, you must only use C++11 libraries. Fortunatelly, those incmpatibilities are rares, and documented there: http://gcc.gnu.org/wiki/Cxx11AbiCompatibility And because Qt uses STL in its ABI very little (if at all), we should be safe. -- Olivier Woboq - Qt services and support - http://woboq.com _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development
