[S] Change in libosmocore[master]: utils: use built-in static_assert() if available

Attention is currently required from: laforge, fixeria.

fixeria has posted comments on this change. ( https://gerrit.osmocom.org/c/libosmocore/+/31496 )

Change subject: utils: use built-in static_assert() if available ......................................................................

Patch Set 1:

(1 comment)

Patchset:

PS1:

Before merging this patch, we need to make sure that all other [lib]osmo-* projects are using osmo_s […]

Surprisingly, while I expected build failures in openbsc.git, the only project that does not compile is osmo-ggsn:

src/osmo-ggsn/gtp/gsn.c: In function 'gtp_new': src/osmo-ggsn/gtp/gsn.c:444:54: error: expression in static assertion is not constant 444 | osmo_static_assert(gtp_T_defs[0].default_val != 0, first_default_val_not_zero);