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[nft] datatype: display description for header field < 8 bits

Message ID 20191009204858.22660-1-pablo@netfilter.org
State Changes Requested
Delegated to: Pablo Neira
Headers show
Series [nft] datatype: display description for header field < 8 bits | expand

Commit Message

Pablo Neira Ayuso Oct. 9, 2019, 8:48 p.m. UTC
# nft describe ip dscp
 payload expression, datatype dscp (Differentiated Services Code Point) (basetype integer), 6 bits

 pre-defined symbolic constants (in hexadecimal):
 nft: datatype.c:209: switch_byteorder: Assertion `len > 0' failed.
 Aborted

Fixes: c89a0801d077 ("datatype: Display pre-defined inet_service values in host byte order")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 src/datatype.c | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/src/datatype.c b/src/datatype.c
index 873f7d4d358b..0ee2925a8368 100644
--- a/src/datatype.c
+++ b/src/datatype.c
@@ -220,6 +220,9 @@  void symbol_table_print(const struct symbol_table *tbl,
 	unsigned int len = dtype->size / BITS_PER_BYTE;
 	uint64_t value;
 
+	if (!len)
+		len = 1;
+
 	for (s = tbl->symbols; s->identifier != NULL; s++) {
 		value = s->value;