R devel - Jan 2025 - Creating a long list triggers billions of messages

Reprex (not recommended in an interactive session as it is difficult to kill):
x <- vector("list", 2^31)

which triggers (presumably) billions of error messages like
Error: long vectors are not supported yet ../include/Rinlinedfuns.h

I believe the error arises from checking each element of the list (all
2^31 of them) and issuing an error message for each of them regarding
the length of the overall list.

? Tue, 21 Jan 2025 16:51:34 +1100
Hugh Parsonage <hugh.parsonage at gmail.com> ?????:
> x <- vector("list", 2^31)
> 
> which triggers (presumably) billions of error messages like
> Error: long vectors are not supported yet ../include/Rinlinedfuns.h
I couldn't reproduce this with some released versions of R or a recent
R-devel. Would you mind sharing your sessionInfo()?

If you'd like to, could you please run

R -q -s -e 'x <- vector("list", 2^31)' -d gdb

...then set a breakpoint on Rf_errorcall, run the program and collect a
backtrace when it fires?

-- 
Best regards,
Ivan