diff options
| -rw-r--r-- | src/csgtermnormalizer.cc | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/csgtermnormalizer.cc b/src/csgtermnormalizer.cc index 0e7a759..b4bfa4c 100644 --- a/src/csgtermnormalizer.cc +++ b/src/csgtermnormalizer.cc @@ -44,9 +44,10 @@ shared_ptr<CSGTerm> CSGTermNormalizer::normalizePass(shared_ptr<CSGTerm> term) do { while (term && normalize_tail(term)) { } if (!term || term->type == CSGTerm::TYPE_PRIMITIVE) return term; - term->left = normalizePass(term->left); + if (term->left) term->left = normalizePass(term->left); } while (term->type != CSGTerm::TYPE_UNION && - (term->right->type != CSGTerm::TYPE_PRIMITIVE || term->left->type == CSGTerm::TYPE_UNION)); + (term->right && term->right->type != CSGTerm::TYPE_PRIMITIVE || + term->left && term->left->type == CSGTerm::TYPE_UNION)); term->right = normalizePass(term->right); // FIXME: Do we need to take into account any transformation of item here? |