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 786641d to shut it up. Signed-off-by: Rob Norris <[email protected]> Sponsored-by: https://despairlabs.com/sponsor/
openzfs · Mar 27, 2024 · 3f51b97 · 3f51b97
1 parent 8cd8ccc
commit 3f51b97
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/sys/zap_leaf.h b/include/sys/zap_leaf.h
@@ -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 {