From 3358fb505a2d030ea6d0825589809a7a2128dc04 Mon Sep 17 00:00:00 2001
From: "evgeny.bovykin" <evgeny.bovykin@jetbrains.com>
Date: Fri, 5 Dec 2025 22:59:44 +0100
Subject: [PATCH] PY-84859 Fix IndexOutOfBounds in PyCallableTypeImpl#dropSelf

GitOrigin-RevId: 06b4772a2586e5cac79a2dfc0ac03f9bd0fa3d95
---
 .../src/com/jetbrains/python/psi/types/PyCallableTypeImpl.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/python/python-psi-impl/src/com/jetbrains/python/psi/types/PyCallableTypeImpl.java b/python/python-psi-impl/src/com/jetbrains/python/psi/types/PyCallableTypeImpl.java
index f186f2a76d8e..69131f24fc43 100644
--- a/python/python-psi-impl/src/com/jetbrains/python/psi/types/PyCallableTypeImpl.java
+++ b/python/python-psi-impl/src/com/jetbrains/python/psi/types/PyCallableTypeImpl.java
@@ -167,7 +167,7 @@ public class PyCallableTypeImpl implements PyCallableType {
   @Override
   public @NotNull PyCallableType dropSelf(@NotNull TypeEvalContext context) {
     final List<PyCallableParameter> parameters = getParameters(context);
-    if (parameters != null && myCallable instanceof PyFunction function) {
+    if (!ContainerUtil.isEmpty(parameters) && myCallable instanceof PyFunction function) {
       final List<PyCallableParameter> functionParameters = function.getParameters(context);
 
       if (!ContainerUtil.isEmpty(functionParameters) && functionParameters.get(0).isSelf()) {