- Fixed a possible crash in the main script engine when restoring previous script.

- Fixed sleep.tick not being set back to 0 before resuming execution, which leads to scripts that are continously executed even when they already ended (they do nothing but waste resources)
- Fixed a pair of free -> aFree used on stacks, which would lead to memory manager reporting leaks where there aren't.


git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@8000 54d463be-8e91-2dee-dedb-b68131a5f0ec

Changelog-Trunk.txt

@@ -4,6 +4,13 @@ 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.
 
 2006/07/31
+	* Fixed a possible crash in the main script engine when restoring previous
+	  script. [Skotlex]
+	* Fixed sleep.tick not being set back to 0 before resuming execution, which
+	  leads to scripts that are continously executed even when they already ended
+	  (they do nothing but waste resources) [Skotlex]
+	* Fixed a pair of free -> aFree used on stacks, which would lead to memory
+	  manager reporting leaks where there aren't. [Skotlex]
 	* Removed incorrect "Waterball range+1 when standing on suiton" feature.
 	  [Skotlex]
 	* Corrected the Speed update code to prevent sending "walk to xy" packets

src/map/script.c

@@ -2641,6 +2641,8 @@ int run_script_timer(int tid, unsigned int tick, int id, int data)
 		}
 		node = node->next;
 	}
+	//Cancel tick value or run_script_main can get into an infinite loop by always delaying execution. [Skotlex]
+	st->sleep.tick = 0;
 	run_script_main(st);
 	return 0;
 }
@@ -2774,13 +2776,15 @@ void run_script_main(struct script_state *st)
 			run_script_timer, st->sleep.charid, (int)st);
 		linkdb_insert(&sleep_db, (void*)st->oid, st);
 		//Restore previous script
-		sd->st = bk_st;
-		sd->npc_id = bk_npcid;
-		bk_st = NULL; //Remove tag for removal.
+		if (sd) {
+			sd->st = bk_st;
+			sd->npc_id = bk_npcid;
+			bk_st = NULL; //Remove tag for removal.
+		}
 	}
 	else if(st->state != END && sd){
 		//Resume later (st is already attached to player).
-		if(bk_st && sd->st != bk_st)
+		if(bk_st)
 			ShowWarning("Unable to restore stack! Double continuation!\n");
 	} else {
 		//Dispose of script.
@@ -3247,7 +3251,7 @@ int do_final_script()
 		while(n) {
 			struct script_state *st = (struct script_state *)n->data;
 			script_free_stack(st->stack);
-			free(st);
+			aFree(st);
 			n = n->next;
 		}
 		linkdb_final(&sleep_db);
@@ -3295,7 +3299,7 @@ int script_reload()
 		while(n) {
 			struct script_state *st = (struct script_state *)n->data;
 			script_free_stack(st->stack);
-			free(st);
+			aFree(st);
 			n = n->next;
 		}
 		linkdb_final(&sleep_db);
@@ -12297,6 +12301,7 @@ int buildin_awake(struct script_state *st)
 			delete_timer(tst->sleep.timer, run_script_timer);
 			node = script_erase_sleepdb(node);
 			tst->sleep.timer = -1;
+			tst->sleep.tick = 0;
 			run_script_main(tst);
 		} else {
 			node = node->next;