From: divverent <divverent@d7cf8633-e32d-0410-b094-e92efae38249>
Date: Sat, 29 Jan 2011 10:14:13 +0000 (+0000)
Subject: prevent a segfault in case a bsp file has zero nodes (happens on broken input to... 
X-Git-Tag: xonotic-v0.5.0~438^2~63
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=5e3093c90aec7351f328c2fca255c9e5ee774f2a;p=xonotic%2Fdarkplaces.git

prevent a segfault in case a bsp file has zero nodes (happens on broken input to q3map2)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10778 d7cf8633-e32d-0410-b094-e92efae38249
---

diff --git a/model_brush.c b/model_brush.c
index d41a5891..bbcdffbc 100644
--- a/model_brush.c
+++ b/model_brush.c
@@ -2565,6 +2565,8 @@ static void Mod_Q1BSP_LoadNodes(lump_t *l)
 	if (l->filelen % sizeof(*in))
 		Host_Error("Mod_Q1BSP_LoadNodes: funny lump size in %s",loadmodel->name);
 	count = l->filelen / sizeof(*in);
+	if (count == 0)
+		Host_Error("Mod_Q1BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
 	out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count*sizeof(*out));
 
 	loadmodel->brush.data_nodes = out;
@@ -5499,6 +5501,8 @@ static void Mod_Q3BSP_LoadNodes(lump_t *l)
 	if (l->filelen % sizeof(*in))
 		Host_Error("Mod_Q3BSP_LoadNodes: funny lump size in %s",loadmodel->name);
 	count = l->filelen / sizeof(*in);
+	if (count == 0)
+		Host_Error("Mod_Q3BSP_LoadNodes: missing BSP tree in %s",loadmodel->name);
 	out = (mnode_t *)Mem_Alloc(loadmodel->mempool, count * sizeof(*out));
 
 	loadmodel->brush.data_nodes = out;