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[mypyc] Fix crash on super in generator #20291

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Merged
merged 1 commit into from
Nov 23, 2025
+13 −2
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[mypyc] Fix crash on super in generator #20291

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4 changes: 2 additions & 2 deletions mypyc/irbuild/expression.py
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Original file line number Diff line number Diff line change
Expand Up @@ -296,8 +296,8 @@ def transform_super_expr(builder: IRBuilder, o: SuperExpr) -> Value:
# Grab first argument
vself: Value = next(iter_env)
if builder.fn_info.is_generator:
# grab sixth argument (see comment in translate_super_method_call)
self_targ = list(builder.symtables[-1].values())[6]
# grab seventh argument (see comment in translate_super_method_call)
self_targ = list(builder.symtables[-1].values())[7]
vself = builder.read(self_targ, builder.fn_info.fitem.line)
elif not ir.is_ext_class:
vself = next(iter_env) # second argument is self if non_extension class
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11 changes: 11 additions & 0 deletions mypyc/test-data/run-classes.test
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Expand Up @@ -322,6 +322,17 @@ if sys.version_info[:2] > (3, 5):
assert TestEnum.b.name == 'b'
assert TestEnum.b.value == 2

[case testRunSuperYieldFromDict]
from typing import Any, Iterator

class DictSubclass(dict):
def items(self) -> Iterator[Any]:
yield 1
yield from super().items()

def test_sub_dict() -> None:
assert list(DictSubclass().items()) == [1]

[case testGetAttribute]
class C:
x: int
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