Fix OverflowError with empty list and large multiplier

This regressed in dfe1ccc.
cdce8p · Oct 2, 2024 · d174ca2 · d174ca2
1 parent dfe1ccc
commit d174ca2
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Showing 2 changed files with 7 additions and 2 deletions.
diff --git a/astroid/protocols.py b/astroid/protocols.py
@@ -142,7 +142,7 @@ def _multiply_seq_by_int(
     context: InferenceContext,
 ) -> _TupleListNodeT:
     node = self.__class__(parent=opnode)
-    if value <= 0:
+    if value <= 0 or not self.elts:
         node.elts = []
         return node
     if len(self.elts) * value > 1e8:

diff --git a/tests/test_protocols.py b/tests/test_protocols.py
@@ -293,13 +293,18 @@ def test_uninferable_list_multiplication_with_multiple_operands() -> None:
         element = parsed.inferred()[0].elts[0]
         assert element.value is Uninferable
 
+    @staticmethod
+    def test_list_multiplication_with_empty_list_and_overflowing_multiplier() -> None:
+        parsed = extract_node("[] * 1163845194457646539560")
+        assert parsed.inferred()[0].elts == []
+
     @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:
+    def test_list_multiplication_with_negative_overflowing_multiplier() -> None:
         parsed = extract_node("[0] * -9223372036854775809")
         assert parsed.inferred()[0].elts == []