> On Feb 21, 2026, at 8:04 AM, John Baldwin <[email protected]> wrote: > > On 2/20/26 17:48, Enji Cooper wrote: >> The branch main has been updated by ngie: >> URL: >> https://cgit.FreeBSD.org/src/commit/?id=d1f1402dff63dd163d4ba4ac65f7f2ffd00c5e08 >> commit d1f1402dff63dd163d4ba4ac65f7f2ffd00c5e08 >> Author: Enji Cooper <[email protected]> >> AuthorDate: 2026-02-20 20:24:46 +0000 >> Commit: Enji Cooper <[email protected]> >> CommitDate: 2026-02-20 22:45:06 +0000 >> libnetbsd: import `__CTASSERT(..)` macros >> These compile-time assert macros are similar to `Static_assert` on >> FreeBSD. >> These macros are in use in newer versions of `contrib/netbsd-tests`. > > FYI, _Static_assert is not a FreeBSD-ism, it's part of C11. Our old CTASSERT > is > a FreeBSD-ism that this extends, but really, these should be implemented in > terms of _Static_assert when possible. Something like: > > #if is_c11 > #define __CTASSERT(x) __Static_assert(x) > #else > /* all the rest */ > #endif > > If __CTASSERT0 is used directly anywhere, you could emulate it via something > like > > #define __CTASSERT0(x, y, z) __Static_assert(x, __STRING(y) "_" __STRING(z)) > > (Note that we build all of userspace as C17 by default in 15.0 and later.)
Hi jhb@! Excellent points. Incorporating our macros/adaptations can cause grief sometimes and I don’t want to porting more code than necessary, so I have incorporated these macros (and a few others) wholesale from NetBSD (I got these from [1]). -Enji 1. https://github.com/NetBSD/src/blob/c26cc77b3a0b26b95a2df2e0154e2b2f7292ab20/sys/sys/cdefs.h#L168-L182
