Make the test suite compatible with --enable-frozen-string-literal
#205
| Job | Run time |
|---|---|
| 20s | |
| 11s | |
| 9s | |
| 19s | |
| 17s | |
| 1m 20s | |
| 1m 1s | |
| 2s | |
| 20s | |
| 23s | |
| 24s | |
| 10s | |
| 11s | |
| 10s | |
| 14s | |
| 10s | |
| 44s | |
| 43s | |
| 52s | |
| 1m 7s | |
| 49s | |
| 17s | |
| 18s | |
| 19s | |
| 28s | |
| 19s | |
| 44s | |
| 44s | |
| 1m 48s | |
| 1m 49s | |
| 2m 13s | |
| 1m 4s | |
| 1m 7s | |
| 2m 9s | |
| 1m 21s | |
| 1m 39s | |
| 1m 47s | |
| 1m 44s | |
| 29m 46s |