From 21351fd2b4b29493c5e79d5cac77044a39499084 Mon Sep 17 00:00:00 2001
From: Richard Thier <magosit@outlook.hu>
Date: Thu, 10 Oct 2024 16:32:07 +0200
Subject: [PATCH] fixed edge-case when padding was not there and
 zero-terminator got overridden

---
 simap.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/simap.h b/simap.h
index 9ccd852..9107abd 100644
--- a/simap.h
+++ b/simap.h
@@ -140,6 +140,8 @@ static inline unsigned int get_size_padding(unsigned int size, unsigned int alig
 static inline uint32_t simap_elem_storage_size(const char *key) {
 	uint32_t keysize = strlen(key);
 	uint32_t padding = get_size_padding(keysize, 8);
+	/* XXX: The exactly 8byte keys need a zero terminator too (would be overridden without this) */
+	padding += (keysize == 8) ? 8 : 0;
 
 	return keysize +
 		sizeof(simap_ptr64) +
@@ -193,6 +195,7 @@ static inline void *simap_force_add_internal(simap_instance *map, const char *ke
 		char *rem_str = (char *)(start_str + 1);
 		strcpy(rem_str, key + 8);
 	}
+	/* XXX: The "padding" gets automagically added by the movement of the arena here(by junk bytes)! */
 
 	/* Update previous with linkage */
 	if(previ != (uint32_t)-1) {