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-rw-r--r--Changelog-Trunk.txt2
-rw-r--r--src/map/map.c3
2 files changed, 4 insertions, 1 deletions
diff --git a/Changelog-Trunk.txt b/Changelog-Trunk.txt
index 8079b0a1c..0751658ee 100644
--- a/Changelog-Trunk.txt
+++ b/Changelog-Trunk.txt
@@ -4,6 +4,8 @@ AS OF SVN REV. 5091, WE ARE NOW USING TRUNK. ALL UNTESTED BUGFIXES/FEATURES GO
IF YOU HAVE A WORKING AND TESTED BUGFIX PUT IT INTO STABLE AS WELL AS TRUNK.
2006/09/09
+ * Added a crash protection in case mapfreeblock unlock tries to free a null
+ pointer. [Skotlex]
* Moved perfect_hiding from state to special_state, so that it clears out
when you remove your pet. [Skotlex]
* Probably fixed the Taekwon Rest skills. [Skotlex]
diff --git a/src/map/map.c b/src/map/map.c
index 492283125..c57902f32 100644
--- a/src/map/map.c
+++ b/src/map/map.c
@@ -271,6 +271,7 @@ unsigned int distance(int dx, int dy) {
*/
int map_freeblock (struct block_list *bl)
{
+ nullpo_retr(block_free_lock, bl);
if (block_free_lock == 0 || block_free_count >= block_free_max)
{
aFree(bl);
@@ -308,7 +309,7 @@ int map_freeblock_unlock_sub(char *file, int lineno)
{ //Directly calling aFree shouldn't be a leak, as Free remembers the size the original pointed to memory was allocated with? [Skotlex]
// aFree(block_free[i]);
// _mfree(block_free[i], file, lineno, __func__);
- _mfree(block_free[i], file, block_free[i]->type*100000+lineno, __func__);
+ _mfree(block_free[i], file, ((block_free[i]?block_free[i]->type:0)*100000)+lineno, __func__);
block_free[i] = NULL;
}
block_free_count = 0;