From dfe1ccce8576fd5854e7eb578985d10f464c1b67 Mon Sep 17 00:00:00 2001
From: correctmost <134317971+correctmost@users.noreply.github.com>
Date: Wed, 2 Oct 2024 07:16:33 -0400
Subject: [PATCH] Fix crashes with large positive and negative list multipliers

Closes #2521
Closes #2523
---
 ChangeLog               |  4 ++++
 astroid/protocols.py    |  5 ++++-
 tests/test_protocols.py | 17 +++++++++++++++++
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 56d97ad391..52d8309031 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -7,6 +7,10 @@ What's New in astroid 4.0.0?
 ============================
 Release date: TBA
 
+* Fix crashes with large positive and negative list multipliers.
+
+  Closes #2521
+  Closes #2523
 
 
 What's New in astroid 3.3.5?
diff --git a/astroid/protocols.py b/astroid/protocols.py
index 0bac32a29a..4688f74713 100644
--- a/astroid/protocols.py
+++ b/astroid/protocols.py
@@ -142,7 +142,10 @@ def _multiply_seq_by_int(
     context: InferenceContext,
 ) -> _TupleListNodeT:
     node = self.__class__(parent=opnode)
-    if value > 1e8:
+    if value <= 0:
+        node.elts = []
+        return node
+    if len(self.elts) * value > 1e8:
         node.elts = [util.Uninferable]
         return node
     filtered_elts = (
diff --git a/tests/test_protocols.py b/tests/test_protocols.py
index 72b91a1156..f718fd1e9c 100644
--- a/tests/test_protocols.py
+++ b/tests/test_protocols.py
@@ -286,6 +286,23 @@ def test_uninferable_list_multiplication() -> None:
         element = parsed.inferred()[0].elts[0]
         assert element.value is Uninferable
 
+    @staticmethod
+    def test_uninferable_list_multiplication_with_multiple_operands() -> None:
+        """Attempting to calculate the result is prohibitively expensive."""
+        parsed = extract_node("[0] * 825 * 16547118")
+        element = parsed.inferred()[0].elts[0]
+        assert element.value is Uninferable
+
+    @staticmethod
+    def test_list_multiplication_with_zero_multiplier() -> None:
+        parsed = extract_node("[0] * 0")
+        assert parsed.inferred()[0].elts == []
+
+    @staticmethod
+    def test_list_multiplication_with_negative_multiplier() -> None:
+        parsed = extract_node("[0] * -9223372036854775809")
+        assert parsed.inferred()[0].elts == []
+
 
 def test_named_expr_inference() -> None:
     code = """