From 88cca0d976bdd6fbe07c8646939fc1512e97cf72 Mon Sep 17 00:00:00 2001
From: skyleo <skyleo@skyleo.de>
Date: Mon, 2 Dec 2019 18:26:42 +0100
Subject: Handle not known values of bl->type with assertion

---
 src/map/unit.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/map/unit.c b/src/map/unit.c
index 96222a62f..28f81017f 100644
--- a/src/map/unit.c
+++ b/src/map/unit.c
@@ -72,6 +72,9 @@ struct unit_interface *unit;
 /**
  * Returns the unit_data for the given block_list. If the object is using
  * shared unit_data (i.e. in case of BL_NPC), it returns the shared data.
+ *
+ * __Warning:__ if bl->type is not known or NULL,
+ * an assertion will be triggered and NULL returned.
  * @param bl block_list to process, it is expected to be not NULL.
  * @return a pointer to the given object's unit_data
  **/
@@ -94,7 +97,7 @@ static struct unit_data *unit_bl2ud(struct block_list *bl)
 	case BL_ELEM:
 		return &BL_UCAST(BL_ELEM, bl)->ud;
 	default:
-		return NULL;
+		Assert_retr(NULL, false);
 	}
 }
 
-- 
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