I am trying to bring up a MacOS buildbot targeting x86 and noticed that
two Dexter tests were failing,
cross-project-tests/debuginfo-tests/llgdb-tests/static-member.cpp and
cross-project-tests/debuginfo-tests/llgdb-tests/static-member-2.cpp.
Looking in the history for these tests, they were XFAILed for Apple
Silicon in 9c46606 and are failing similar on x86 for me, so we should extend
the XFAIL to all MacOS architectures.
Tests in the `cross-project-tests/debuginfo-tests/llgdb-tests` directory run
gdb on non-darwin platforms. gdb versions less than 10.1 cannot parse the DWARF
v5 emitted by clang, and DWARF v5 is now the default, so these tests fail on
Linux with gdb versions less than 10.1. This patch lets us XFAIL the tests
under these conditions.
Add `gdb-clang-incompatibility` to the `available_features` in
`cross-project-tests/lit.cfg.py` when clang's default DWARF version is 5 or
greater and the gdb (if found) version is less than 10.1.
Discourse discussion:
https://llvm.discourse.group/t/gdb-10-1-cant-read-clangs-dwarf-v5/6035
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D118468
