gh-111178: fix UBSan failures for Modules/_testmultiphase.c
#159478
| Job | Run time |
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| 2s | |
| 2s | |
| 4s |
Modules/_testmultiphase.c
#159478
| Job | Run time |
|---|---|
| 2s | |
| 2s | |
| 4s |