src: Use memcpy() to handle potentially unaligned data

Rolf Eike Beer <eike@sf-mail.de> reported that nft-expr_quota-test fails
with a SIGBUS on SPARC due to unaligned accesses. This patch resolves
that and fixes additional sources of unaligned accesses matching the
same pattern. Both nft-expr_quota-test and nft-expr_objref-test
generated unaligned accesses on DEC Alpha.

Bug: https://bugs.gentoo.org/666448
Signed-off-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gen.c b/src/gen.c
index 8e1a37a..1fc9099 100644
--- a/src/gen.c
+++ b/src/gen.c
@@ -73,7 +73,7 @@ int nftnl_gen_set_data(struct nftnl_gen *gen, uint16_t attr,
 
 	switch (attr) {
 	case NFTNL_GEN_ID:
-		gen->id = *((uint32_t *)data);
+		memcpy(&gen->id, data, sizeof(gen->id));
 		break;
 	}
 	gen->flags |= (1 << attr);