test: explore re-enabling tests previously skipped because of stack size #801
Description
Per #798 (comment):
And actually both on my configuration and on circleci the test runs well (so it seems like it could be re-enabled):
=== RUN TestOnePassCutoff
--- PASS: TestOnePassCutoff (0.08s)
"It" here is a reference to regexp's TestOnePassCutoff which is skipped on the basis it has in the past exceed the call stack size.
Following #687, stack size issues should be greatly reduced and/or have disappeared entirely.
Hence we should now review whether tests like regexp's TestOnePassCutoff can be re-enabled.