This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: libstdc++ c++98 & c++11 ABI incompatibility


On 07/02/2012 10:26 AM, Michael Meeks wrote:

On Thu, 2012-06-14 at 15:14 +0200, Matthias Klose wrote:
While PR53646 claims that c++98 and c++11 should be ABI
compatible (modulo bugs), the addition of the _M_size member
to std::_List_base::_List_impl makes libraries using
std::list in headers incompatible

This is pretty nasty for LibreOffice (and no doubt others). We can, and often do depend on rather a number of system C++ libraries and at a very minimum, having no simple way to detect which C++ ABI we have to build against 'old' vs. 'new' - is profoundly unpleasant.

	Is there no chance of having a bug fix that is a revision of the
(unintended?) ABI breakage in this compiler series ?
That's the direction I'd prefer to see (reversion until we're ready to make the wholesale ABI changes). Not sure what the libstdc++ maintainers are thinking right now.

Jeff


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]