| *%(basename)s:9: TypeError: FinalizationGroup.prototype.register: target and holdings must not be same | |
| fg.register(o, o); | |
| ^ | |
| TypeError: FinalizationGroup.prototype.register: target and holdings must not be same | |
| at FinalizationGroup.register (<anonymous>) | |
| at *%(basename)s:9:4 |