From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: Wed, 13 Apr 2022 02:01:19 +0000 (+0200)
Subject: evaluate: allow for zero length ranges
X-Git-Tag: v1.0.3~25
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=7a6e16040d65227557f1f2224b5904a7373da86e;p=thirdparty%2Fnftables.git

evaluate: allow for zero length ranges

Allow for ranges such as, eg. 30-30.

This is required by the new intervals.c code, which normalize constant,
prefix set elements to all ranges.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/src/evaluate.c b/src/evaluate.c
index 7f748c49..eb147585 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -1029,7 +1029,7 @@ static int expr_evaluate_range(struct eval_ctx *ctx, struct expr **expr)
 	left = range->left;
 	right = range->right;
 
-	if (mpz_cmp(left->value, right->value) >= 0)
+	if (mpz_cmp(left->value, right->value) > 0)
 		return expr_error(ctx->msgs, range,
 				  "Range has zero or negative size");
 	datatype_set(range, left->dtype);