| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 66 of 97 | 32% | 6 of 6 | 0% | 11 | 12 | 9 | 19 | 8 | 9 |
| equals(Object) | | 0% | | 0% | 4 | 4 | 1 | 1 | 1 | 1 |
| hashCode() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| put(ThreadContext, StructLayout.Storage, AbstractMemory, IRubyObject) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| get(ThreadContext, StructLayout.Storage, AbstractMemory) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| getOffset(IRubyObject) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| getIndex() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| offset() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| type() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| StructLayout.Member(StructLayout.Field, int, int, int) | | 100% | n/a | 0 | 1 | 0 | 10 | 0 | 1 |