gh-111178: fix UBSan failures for Modules/_testmultiphase.c
#159244
| Job | Run time |
|---|---|
| 5s | |
| 3s | |
| 8s |
Modules/_testmultiphase.c
#159244
| Job | Run time |
|---|---|
| 5s | |
| 3s | |
| 8s |