laforge has submitted this change. ( https://gerrit.osmocom.org/c/osmo-ggsn/+/31511 )

Change subject: gtp: use OSMO_ASSERT() in gtp_new() ......................................................................

gtp: use OSMO_ASSERT() in gtp_new()

When using built-in static_assert() [1], gcc v12.2.1 fails:

In file included from gsn.c:27: gsn.c: In function 'gtp_new': 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); | ^

The reason is likely that gtp_T_defs[] is not const, so it cannot be assert()ed statically. With the current osmo_static_assert() implementation, this assert does nothing. One can change the gtp_T_defs[0].default_val to 0 and the code will still compile.

Change-Id: Ia8af1736b63d501661046fe70befe5bbabc1045a Related: [1] libosmocore.git I5ca34bc14c05e8c38c721d7df33feb1c6c41c76e --- M gtp/gsn.c 1 file changed, 24 insertions(+), 1 deletion(-)

Approvals: Jenkins Builder: Verified neels: Looks good to me, but someone else must approve osmith: Looks good to me, but someone else must approve laforge: Looks good to me, approved

diff --git a/gtp/gsn.c b/gtp/gsn.c index 9776b28..8b3ea3a 100644 --- a/gtp/gsn.c +++ b/gtp/gsn.c @@ -441,7 +441,7 @@ /* Initialize timers: */ (*gsn)->tdef = gtp_T_defs; /* Small hack to properly reset tdef for old clients not using the tdef_group: */ - osmo_static_assert(gtp_T_defs[0].default_val != 0, first_default_val_not_zero); + OSMO_ASSERT(gtp_T_defs[0].default_val != 0); if (gtp_T_defs[0].val == 0) osmo_tdefs_reset((*gsn)->tdef);