https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104883
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- >From PR 1007008 comment 2: -- >8 -- We could do something like this for each enumerator: #ifdef EFOO foo = EFOO, #else foo = _GLIBCXX_ERRC_ORIGIN + __LINE__, #endif Where _GLIBCXX_ERRC_ORIGIN is some value intended to be higher than the highest errno value on the OS. We only need fewer than 100 errc enumerators so INT_MAX/2 might be OK. We can use #line to set the __LINE__ to a fixed value in the file, so that the constants don't change if we add/remove lines before the errc definition. -- >8 -- We can use a default _GLIBCXX_ERRC_ORIGIN value, and allow it to be overridden in config/os/*/os_defines.h if the default doesn't work.
