zap_leaf: make l_hash[] variable length to silence UBSAN

When UBSAN is active and OpenZFS is a debug build, the l_hash assert at
the bottom of zap_open_leaf() causes UBSAN to complain.

This follows the example in 786641dcf to shut it up.

Sponsored-by: https://despairlabs.com/sponsor/
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <robn@despairlabs.com>
Closes #15964
This commit is contained in:
Rob N 2024-04-04 10:38:18 +11:00 committed by Tony Hutter
parent 889152ce4a
commit da88fc4ac9

View File

@ -132,7 +132,7 @@ typedef struct zap_leaf_phys {
* with the ZAP_LEAF_CHUNK() macro.
*/
uint16_t l_hash[1];
uint16_t l_hash[];
} zap_leaf_phys_t;
typedef union zap_leaf_chunk {