Use a new technique to detect fresh OOM faults in columnName() that does not

Use a new technique to detect fresh OOM faults in columnName() that does not
rely on there being no OOMs prior to entry into columnName(), as
[forum/forumpost/fb6811c2f9|forum post fb6811c2f9] demonstrates a technique
which could cause an OOM prior to entry into columnName().

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