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nss: add assert to DB_LOOKUP_FCT (BZ #28752)

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It's interesting if we have a null action list,
so an assert is worthwhile.

Suggested-by: DJ Delorie <dj@redhat.com>
Signed-off-by: Sam James <sam@gentoo.org>
Reviewed-by: DJ Delorie <dj@redhat.com>
(cherry picked from commit 3fdf0a205b)
This commit is contained in:
Sam James 2022-06-05 04:57:09 +01:00 committed by DJ Delorie
parent bb4148283f
commit 368c5c3e00
1 changed files with 5 additions and 0 deletions
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nss/XXX-lookup.c
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@ -16,6 +16,7 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
#include "nsswitch.h"
/*******************************************************************\
@ -55,6 +56,10 @@ DB_LOOKUP_FCT (nss_action_list *ni, const char *fct_name, const char *fct2_name,
*ni = DATABASE_NAME_SYMBOL;
/* We want to know about it if we've somehow got a NULL action list;
in the past, we had bad state if seccomp interfered with setup. */
assert(*ni != NULL);
return __nss_lookup (ni, fct_name, fct2_name, fctp);
}
libc_hidden_def (DB_LOOKUP_FCT)