Description of the problem / feature request:

Since Apple charmingly combines their security and feature updates, it is important to be on the latest released version of their operating system and Xcode command line tools. A recent upstream update seems to have broken the ability to compile bazel.

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

• Clone and attempt to build bazel with bazel build //src:bazel on a fully up to date macOS

Expected outcome: successful compilation

Actual outcome:

Compilation fails with the following error:

external/com_google_absl/absl/functional/function_ref.h:124:16: error: definition of implicit copy constructor for 'FunctionRef<void (absl::string_view)>' is deprecated because it has a user-declared copy assignment operator [-Werror,-Wdeprecated-copy]
  FunctionRef& operator=(const FunctionRef& rhs) = delete;
               ^

What operating system are you running Bazel on?

macOS 12.3.1 on an M1 MacBook Air
Command Line Tools for Xcode 13.2

% gcc --version
Apple clang version 13.1.6 (clang-1316.0.21.2)
Target: arm64-apple-darwin21.4.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

What's the output of bazel info release?

% bazel info release
release 5.1.0

What's the output of git remote get-url origin ; git rev-parse master ; git rev-parse HEAD ?

git remote get-url origin ; git rev-parse master ; git rev-parse HEAD
git@github.com:bazelbuild/bazel.git
436d04d
436d04d

The same problem manifests when checking out version 5.1.0, 93677c6

Have you found anything relevant by searching the web?

It seems there was a fix landed upstream that is referenced here abseil/abseil-cpp#948

It seems from the commit closing the issue that there is a straight forward one line fix, but it is unclear to me how to patch this in the bazel code base.

When I update the grpc version referenced in distdir_deps.bzl from v1.41.1 to v1.45.1, I can no longer reproduce this problem.