Leak sanitizer UI test hangs on Macos ARM64

[hkratz]

Try on a Apple Silicon Mac:

./configure --build=aarch64-apple-darwin --enable-sanitizers --enable-profiler --set rust.jemalloc --set llvm.ninja=false
./x.py test --stage 1  src/test/ui/sanitize/leak.rs

Expected result: Test passes.

Actual result: Test hangs:

running 1 test
test [ui] ui/sanitize/leak.rs has been running for over 60 seconds

See also: #88131

@rustbot label +A-sanitizer +A-llvm +O-macos +O-arm

[hkratz]

This problem is still reproducible with LLVM 13.

[Jules-Bertholet]

@rustbot label A-sanitizers