evaluate: clone unary expression datatype to deal with dynamic datatype

When allocating a unary expression, clone the datatype to deal with
dynamic datatypes.

Fixes: 6b01bb9ff798 ("datatype: concat expression only releases dynamically allocated datatype")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/evaluate.c b/src/evaluate.c
index bcf83d80..2ead0347 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -1245,7 +1245,7 @@ static int expr_evaluate_unary(struct eval_ctx *ctx, struct expr **expr)
 		BUG("invalid unary operation %u\n", unary->op);
 	}
 
-	unary->dtype	 = arg->dtype;
+	unary->dtype	 = datatype_clone(arg->dtype);
 	unary->byteorder = byteorder;
 	unary->len	 = arg->len;
 	return 0;