On Fri, Sep 25, 2026 at 6:30 PM Jonathan Wakely <[email protected]> wrote:
> The stdalign.h macros were removed from C++26 but this patch just tweaks > the comment, without actually removing them. Doing so would be a > breaking change, although probably not in practice because it seems very > unlikely any C++ code is checking those macros. > > The macros were also removed from C23, so if we remove them from > stdalign.h for C then we can decide to do the same for C++ at that time. > > gcc/ChangeLog: > > * ginclude/stdalign.h: Note that the macros were removed from > C++ in C++26. > * ginclude/stdbool.h: Note that the macro is deprecated since > C++23. > --- > > Tested x86_64-linux. > > OK for trunk? > This looks good to me, but we usually reserve OK as approval from the official reviewer. (unless I become one, and I am not aware of it). > > gcc/ginclude/stdalign.h | 2 +- > gcc/ginclude/stdbool.h | 1 + > 2 files changed, 2 insertions(+), 1 deletion(-) > > diff --git a/gcc/ginclude/stdalign.h b/gcc/ginclude/stdalign.h > index a68cb28059ce..94ecbf14a417 100644 > --- a/gcc/ginclude/stdalign.h > +++ b/gcc/ginclude/stdalign.h > @@ -33,7 +33,7 @@ see the files COPYING3 and COPYING.RUNTIME > respectively. If not, see > #define alignof _Alignof > #endif > > -/* These are defined for C++, but deprecated in C++23. */ > +/* These are defined for C++, but deprecated in C++23 and gone in C++26. > */ > #define __alignas_is_defined 1 > #define __alignof_is_defined 1 > > diff --git a/gcc/ginclude/stdbool.h b/gcc/ginclude/stdbool.h > index 9070a1876233..6f72714f6d62 100644 > --- a/gcc/ginclude/stdbool.h > +++ b/gcc/ginclude/stdbool.h > @@ -46,6 +46,7 @@ see the files COPYING3 and COPYING.RUNTIME > respectively. If not, see > #endif /* __cplusplus */ > > /* Signal that all the definitions are present. */ > +/* This is defined for C++, but deprecated in C++23. */ > #define __bool_true_false_are_defined 1 > > #endif /* stdbool.h */ > -- > 2.55.0 > >
