BUG: stack with empty level list #21764

Job	Run time
Linux-32-bit	18m 13s
Linux-Musl	15m 57s
macos-13 actions-310.yaml	24m 15s
macos-13 actions-311.yaml	26m 9s
macos-13 actions-312.yaml	23m 55s
macos-14 actions-310.yaml	20m 5s
macos-14 actions-311.yaml	13m 58s
macos-14 actions-312.yaml	20m 22s
windows-latest actions-311.yaml	23m 23s
windows-latest actions-312.yaml	23m 23s
windows-latest actions-310.yaml	23m 21s
Pyodide build	22m 31s
python-dev (macOS-13)	23m 24s
python-dev (macOS-14)	9m 19s
python-dev (ubuntu-22.04)	20m 10s
python-dev (windows-latest)	22m 47s
python-freethreading	22m 33s
Minimum Versions	23m 28s
Future infer strings (without pyarrow)	28m 10s
Locale: zh_CN	23m 26s
Locale: it_IT	23m 25s
Downstream Compat	7m 2s
Numpy Dev	17m 9s
Pyarrow Nightly	20m 30s
Future infer strings	28m 9s
Pypy	1m 33s
ubuntu-22.04 actions-310.yaml	28m 7s
ubuntu-22.04 actions-311.yaml	28m 8s
ubuntu-22.04 actions-312.yaml	28m 9s
ubuntu-24.04-arm actions-312.yaml	25m 17s
ubuntu-24.04-arm actions-311.yaml	23m 18s
ubuntu-24.04-arm actions-310.yaml	25m 0s
	11h 24m 36s

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