Don't memcpy a 0-length vector #1793
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The same issue as here:
r-lib/vctrs#1968
MRE traced back to:
I added that as a regression test in {vctrs}, if you know of a way to test that directly in {rlang} please advise.
r-devel thread:
https://stat.ethz.ch/pipermail/r-devel/2024-June/083456.html