add another check after #60

NanoComp · Feb 3, 2022 · 069e736 · 069e736
1 parent db77f32
commit 069e736
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/utils/geom.c b/utils/geom.c
@@ -2579,7 +2579,8 @@ void init_prism(geometric_object *o) {
     }
   }
   num_vertices = i + 1 - vector3_equal(vertices[0], vertices[i]);
-  if (prsm->vertices.num_items != num_vertices) {
+  CHECK(num_vertices >= 3, "fewer than 3 non-duplicate vertices in init_prism");
+  if (prsm->vertices.num_items < num_vertices) {
     prsm->vertices.num_items = num_vertices;
     vertices = (vector3 *)realloc(vertices, num_vertices * sizeof(vector3));
   }