See below, lldb works with prior versions of R without a problem. Perhaps
the new hardened runtime is the issue. The behavior seems similar to that
discussed in this thread (https://forums.developer.apple.com/thread/119059).
It would be pretty detrimental not to be able to debug R with lldb, so
hopefully we can find a way to make this work again.
> R --version
R version 3.6.3 (2020-02-29) -- "Holding the Windsock"
Copyright (C) 2020 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin15.6.0 (64-bit)
> R -d lldb
(lldb) target create "/Library/Frameworks/R.framework/Resources/bin/exec/R"
Current executable set to
'/Library/Frameworks/R.framework/Resources/bin/exec/R' (x86_64).
(lldb) r
error: process exited with status -1 (Error 1)
(lldb)
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