These three tests showed up as failing on PlayStation due to failing allocations, they each seem to try to make a 1 gig or larger string with padEnd or repeat, so seem like they should also fail in other highly memory limited environments. Some other tests doing similar things (such as stress/string-overflow-createError.js) have been marked skip if $memoryLimited.
Created attachment 368603 [details] Patch Add // @skip if $memoryLimited for stress/StringObject-define-length-getter-rope-string-oom.js stress/create-error-out-of-memory-rope-string.js stress/string-16bit-repeat-overflow.js
Comment on attachment 368603 [details] Patch Looking through other stress tests with values like 2147483644, it certainly appears that this trio was simply overlooked.
Comment on attachment 368603 [details] Patch Clearing flags on attachment: 368603 Committed r244832: <https://trac.webkit.org/changeset/244832>
All reviewed patches have been landed. Closing bug.
<rdar://problem/50374075>