On 2017-Aug-27, at 11:54 PM, Ed Schouten <ed at nuxi.nl> wrote: > 2017-08-25 14:53 GMT+02:00 Ed Schouten <ed a tnuxi.nl>: >> 2017-08-25 9:46 GMT+02:00 Mark Millard <markmi at dsl-only.net>: >>> It appears that at least 11.1-STABLE -r322807 does not handle >>> -std=c++98 styles of use of _Static_assert for g++7 in that >>> g++7 reports an error: >> >> Maybe we need to do something like this? >> >> Index: sys/sys/cdefs.h >> =================================================================== >> --- sys/sys/cdefs.h (revision 322887) >> +++ sys/sys/cdefs.h (working copy) >> @@ -294,7 +294,7 @@ >> #if (defined(__cplusplus) && __cplusplus >= 201103L) || \ >> __has_extension(cxx_static_assert) >> #define _Static_assert(x, y) static_assert(x, y) >> -#elif __GNUC_PREREQ__(4,6) >> +#elif __GNUC_PREREQ__(4,6) && !defined(__cplusplus) >> /* Nothing, gcc 4.6 and higher has _Static_assert built-in */ >> #elif defined(__COUNTER__) >> #define _Static_assert(x, y) __Static_assert(x, __COUNTER__) > > Could you let me know whether this patch fixes the build for you? If > so, I'll commit it!
As a variant of stable/11 -r322807 . . . buildworld and buildkernel seem to work fine. (I did not try any port [re-]builds.) Based on the same main.cc as before . . . g++7 -std=c++98 main.cc g++7 -Wpedantic -std=c++98 main.cc g++7 -std=c++03 main.cc g++7 -Wpedantic -std=c++03 main.cc no longer complain (so no error, no warning). clang++ -Wpedantic -std=c++11 main.cc clang++ -Wpedantic -std=c++98 main.cc clang++ -Wpedantic -std=c++03 main.cc each still give the warning but no error. g++7 -Wpedantic -std=c++11 main.cc g++7 -std=c++11 main.cc clang++ -std=c++11 main.cc clang++ -std=c++98 main.cc clang++ -std=c++03 main.cc are still silent, no errors, no warnings. Note that clang here is version 4 --the same as in my original report that had the g++7 rejection example. This is because of the stable/11 context that I used. (An intended MFC had been listed.) If needed I could probably try under some version of head (and so test clang version 5). === Mark Millard markmi at dsl-only.net _______________________________________________ freebsd-stable@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
