CVSROOT: /cvs
Module name: src
Changes by: bl...@cvs.openbsd.org 2022/02/07 08:23:43
Modified files:
sys/netinet6 : nd6.c nd6_nbr.c
Log message:
Checking ifaddr pointer for NULL without checking in6_ifaddr works
as ifaddr ia_ifa is the first field of in6_ifaddr. So the pointers
are the same, and one NULL check works for both. But in ISO C NULL
has some kind of type and this is undefined behavior. So add a
second NULL check that the compiler can optimize away. The resulting
assembler is the same.
found by kubsan; OK tobhe@
