- fixed: DoSetMapSection could cause a stack overflow on large maps. Made it iterative instead of recursive to avoid that.

src/gl/data/gl_setup.cpp

@@ -69,12 +69,17 @@ void InitGLRMapinfoData();
 // 
 //
 //==========================================================================
+static TArray<subsector_t *> MapSectionCollector;
 
 static void DoSetMapSection(subsector_t *sub, int num)
 {
+	MapSectionCollector.Resize(1);
+	MapSectionCollector[0] = sub;
 	sub->mapsection = num;
-
+	for (unsigned a = 0; a < MapSectionCollector.Size(); a++)
-	for(DWORD i=0;i<sub->numlines;i++)
+	{
+		sub = MapSectionCollector[a];
+		for (DWORD i = 0; i < sub->numlines; i++)
 		{
 			seg_t * seg = sub->firstline + i;
 
@@ -85,10 +90,13 @@ static void DoSetMapSection(subsector_t *sub, int num)
 				if (sub2->mapsection != num)
 				{
 					assert(sub2->mapsection == 0);
-				DoSetMapSection(sub2, num);
+					sub2->mapsection = num;
+					MapSectionCollector.Push(sub2);
 				}
 			}
 		}
+	}
+	MapSectionCollector.Clear();
 }
 
 //==========================================================================