Catch type errors in map expressions using named maps:
# nft add map filter test { type ipv4_addr : inet_service; }
# nft filter output mark set tcp dport map @test
<cmdline>:1:38-42: Error: datatype mismatch, map expects IPv4 address, mapping expression has type internet network service
filter output mark set tcp dport map @test
~~~~~~~~~ ^^^^^
Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
---
src/evaluate.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/evaluate.c b/src/evaluate.c
index 2067a01..90c87d0 100644
--- a/src/evaluate.c
+++ b/src/evaluate.c
@@ -748,6 +748,13 @@ static int expr_evaluate_map(struct eval_ctx *ctx, struct expr **expr)
map->mappings->ops->name);
}
+ if (!datatype_equal(map->map->dtype, map->mappings->set->keytype))
+ return expr_binary_error(ctx->msgs, map->mappings, map->map,
+ "datatype mismatch, map expects %s, "
+ "mapping expression has type %s",
+ map->mappings->set->keytype->desc,
+ map->map->dtype->desc);
+
map->dtype = map->mappings->set->datatype;
map->flags |= EXPR_F_CONSTANT;
--
2.1.0
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