diff --git a/src/Php/Analysis/SsaBuilder.php b/src/Php/Analysis/SsaBuilder.php
index 852d4cdf..abf5bb23 100644
--- a/src/Php/Analysis/SsaBuilder.php
+++ b/src/Php/Analysis/SsaBuilder.php
@@ -1482,6 +1482,9 @@ class SsaBuilder
     private function collectCallByRefArgs(array $args, Node $callStmt, array &$pushedVars): void
     {
         foreach ($args as $arg) {
+            if ($arg instanceof Node\VariadicPlaceholder) {
+                continue;
+            }
             $varName = null;
 
             // Case 1: Explicit &$var at call site