This looks more accurate than the current wording, yes. Specifically, only objects/libraries "built with experimental standard support" need to be recompiled.
LGTM, but I'll let Jason give approval. On Wed, 12 Feb 2025 at 09:30, Sam James <s...@gentoo.org> wrote: > > C++ ABI for C++ standards with full support by GCC (rather than those > marked as experimental per https://gcc.gnu.org/projects/cxx-status.html) > should be stable. It's certainly not the case in 2025 that one needs a > full world rebuild for C++ libraries using e.g. the default standard > or any other supported standard by C++, unless it is marked experimental > where we provide no guarantees. > --- > htdocs/bugs/index.html | 16 ++++++++-------- > 1 file changed, 8 insertions(+), 8 deletions(-) > > diff --git a/htdocs/bugs/index.html b/htdocs/bugs/index.html > index d6556b26..99d19095 100644 > --- a/htdocs/bugs/index.html > +++ b/htdocs/bugs/index.html > @@ -633,14 +633,14 @@ changed the parser rules so that <code><::</code> > works as expected. > components: the first defines how the elements of classes are laid > out, how functions are called, how function names are mangled, etc; > the second part deals with the internals of the objects in libstdc++. > -Although we strive for a non-changing ABI, so far we have had to > -modify it with each major release. If you change your compiler to a > -different major release <em>you must recompile all libraries that > -contain C++ code</em>. If you fail to do so you risk getting linker > -errors or malfunctioning programs. > -It should not be necessary to recompile if you have changed > -to a bug-fix release of the same version of the compiler; bug-fix > -releases are careful to avoid ABI changes. See also the > +For C++ standards marked as > +<a href="https://gcc.gnu.org/projects/cxx-status.html";>experimental</a>, > +stable ABI is not guaranteed: for these, if you change your compiler to a > +different major release <em>you must recompile any such libraries built > +with experimental standard support that contain C++ code</em>. If you fail > +to do so, you risk getting linker errors or malfunctioning programs. > +It should not be necessary to recompile for C++ standards supported fully > +by GCC, such as the default standard. See also the > <a href="https://gcc.gnu.org/onlinedocs/gcc/Compatibility.html";>compatibility > section</a> of the GCC manual.</p> > > -- > 2.48.1 >
