Commits
Neal Richardson authored 5e6d72d6406
ARROW-7829: [R] Test R bindings on clang Closes #6400 from nealrichardson/clang-macos-warnings and squashes the following commits: 58b911fa0 <Neal Richardson> Fix warnings 05169013d <Neal Richardson> Don't --as-cran f0711ff66 <Neal Richardson> Try to trigger build failure on warning on macos-r-autobrew Authored-by: Neal Richardson <neal.p.richardson@gmail.com> Signed-off-by: Neal Richardson <neal.p.richardson@gmail.com>