On Thu, 4 Sept 2025 at 19:03, Jonathan Wakely <jwakely....@gmail.com> wrote: > > > > On Thu, 4 Sept 2025, 18:02 Iain Sandoe, <iains....@gmail.com> wrote: >> >> The facility (with the original shorter name) has been in use on the >> contracts development branch for almost a year, and has been tested in >> isolation on x86_64-darwin and powerpc64le-linux. >> OK for trunk? >> thanks >> Iain >> >> --- 8< --- >> >> This implements the library parts of P1494 as amended by P3641. For GCC the >> compiler itself treats stdio operations as equivalent to the observable >> checkpoint and thus it does not appear to be necessary to add calls to those >> functions (it will not alter the outcome). >> >> This adds the facility for C++26, although there is no reason, in principle, >> that it would not work back to C++11 at least. >> >> PR c++/119060 >> >> libstdc++-v3/ChangeLog: >> >> * include/bits/version.h (__glibcxx_observable_checkpoint, >> __cpp_lib_observable_checkpoint, >> __glibcxx_want_observable_checkpoint): New. > > > This file is auto-generated from bits/version.def
https://gcc.gnu.org/onlinedocs/libstdc++/manual/appendix_porting.html#build_hacking.generated says how to regenerate it, but I haven't got round to documenting how to edit version.def yet. The comments at the top of the file are good, and you can copy from existing examples in the file.
