operator precedence

hhvm · Mar 6, 2019 · ae5a5ac · ae5a5ac
1 parent e82e883
commit ae5a5ac
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/core/ComposableElement.php b/src/core/ComposableElement.php
@@ -761,7 +761,7 @@ final private function validateChildrenRule(
         $child = $this->children->get($index);
         assert($child instanceof :xhp);
         $categories = $child->__xhpCategoryDeclaration();
-        if ($categories[$category] ?? 0 === 0) {
+        if (($categories[$category] ?? 0) === 0) {
           return tuple(false, $index);
         }
         return tuple(true, $index + 1);