From 5a090e84bc5f575e91f65f627fd50da1e536ba78 Mon Sep 17 00:00:00 2001
From: plagman <plagman@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Sun, 26 Apr 2009 17:47:08 +0000
Subject: [PATCH] Couple of fixes for corrupt maps.

git-svn-id: https://svn.eduke32.com/eduke32@1347 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/src/polymer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/polymer/eduke32/build/src/polymer.c b/polymer/eduke32/build/src/polymer.c
index 7fe96c29e..54a0decbf 100644
--- a/polymer/eduke32/build/src/polymer.c
+++ b/polymer/eduke32/build/src/polymer.c
@@ -2082,6 +2082,8 @@ static void         polymer_updatewall(int16_t wallnum)
     wal = &wall[wallnum];
     nwallnum = wal->nextwall;
     sec = &sector[sectorofwall(wallnum)];
+    if (sec->wallptr > wallnum)
+        return; // the map is horribly corrupt
     w = prwalls[wallnum];
     s = prsectors[sectorofwall(wallnum)];
     invalid = s->invalidid;
@@ -2639,7 +2641,7 @@ static void         polymer_computeplane(_prplane* p)
         }
         i+= 1;
     }
-    while (i < p->indicescount);
+    while ((i + 2) < p->indicescount);
 }
 
 static inline void  polymer_crossproduct(GLfloat* in_a, GLfloat* in_b, GLfloat* out)