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[mypyc] Free coroutine after await encounters StopIteration #19231

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Merged
merged 1 commit into from
Jun 4, 2025
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[mypyc] Free coroutine after await encounters StopIteration #19231

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4 changes: 4 additions & 0 deletions mypyc/irbuild/statement.py
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Original file line number Diff line number Diff line change
Expand Up @@ -940,6 +940,10 @@ def emit_yield_from_or_await(
# If it wasn't, this reraises the exception.
builder.activate_block(stop_block)
builder.assign(result, builder.call_c(check_stop_op, [], line), line)
# Clear the spilled iterator/coroutine so that it will be freed.
# Otherwise, the freeing of the spilled register would likely be delayed.
err = builder.add(LoadErrorValue(object_rprimitive))
builder.assign(iter_reg, err, line)
builder.goto(done_block)

builder.activate_block(main_block)
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