[clang] [clang] CWG2398: improve overload resolution backwards compat (PR #107350)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `lldb-x86_64-debian` running on `lldb-x86_64-debian` while building `clang` at step 6 "test".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/162/builds/8122

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (test) failure: build (failure)
...
PASS: lldb-unit :: Process/Utility/./ProcessUtilityTests/34/39 (2677 of 2686)
UNSUPPORTED: lldb-shell :: ScriptInterpreter/Lua/convenience_variables.test (2678 of 2686)
UNSUPPORTED: lldb-shell :: ScriptInterpreter/Lua/independent_state.test (2679 of 2686)
UNSUPPORTED: lldb-shell :: ScriptInterpreter/Python/Crashlog/interactive_crashlog_legacy.test (2680 of 2686)
PASS: lldb-api :: api/multithreaded/TestMultithreaded.py (2681 of 2686)
PASS: lldb-api :: tools/lldb-server/TestGdbRemoteFork.py (2682 of 2686)
PASS: lldb-api :: tools/lldb-server/TestLldbGdbServer.py (2683 of 2686)
PASS: lldb-api :: commands/process/attach/TestProcessAttach.py (2684 of 2686)
PASS: lldb-api :: repl/clang/TestClangREPL.py (2685 of 2686)
UNRESOLVED: lldb-api :: commands/gui/spawn-threads/TestGuiSpawnThreads.py (2686 of 2686)
******************** TEST 'lldb-api :: commands/gui/spawn-threads/TestGuiSpawnThreads.py' FAILED ********************
Script:
--
/usr/bin/python3 /home/worker/2.0.1/lldb-x86_64-debian/llvm-project/lldb/test/API/dotest.py -u CXXFLAGS -u CFLAGS --env ARCHIVER=/usr/bin/ar --env OBJCOPY=/usr/bin/objcopy --env LLVM_LIBS_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/./lib --env LLVM_INCLUDE_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/include --env LLVM_TOOLS_DIR=/home/worker/2.0.1/lldb-x86_64-debian/build/./bin --arch x86_64 --build-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex --lldb-module-cache-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/module-cache-lldb/lldb-api --clang-module-cache-dir /home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/module-cache-clang/lldb-api --executable /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/lldb --compiler /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/clang --dsymutil /home/worker/2.0.1/lldb-x86_64-debian/build/./bin/dsymutil --llvm-tools-dir /home/worker/2.0.1/lldb-x86_64-debian/build/./bin --lldb-obj-root /home/worker/2.0.1/lldb-x86_64-debian/build/tools/lldb --lldb-libs-dir /home/worker/2.0.1/lldb-x86_64-debian/build/./lib -t /home/worker/2.0.1/lldb-x86_64-debian/llvm-project/lldb/test/API/commands/gui/spawn-threads -p TestGuiSpawnThreads.py
--
Exit Code: 1

Command Output (stdout):
--
lldb version 20.0.0git (https://github.com/llvm/llvm-project.git revision 224519b08945637a85e9798c78286643288f7b77)
  clang revision 224519b08945637a85e9798c78286643288f7b77
  llvm revision 224519b08945637a85e9798c78286643288f7b77
(lldb) settings clear -all
(lldb) settings set symbols.enable-external-lookup false
(lldb) settings set target.inherit-tcc true
(lldb) settings set target.disable-aslr false
(lldb) settings set target.detach-on-error false
(lldb) settings set target.auto-apply-fixits false
(lldb) settings set plugin.process.gdb-remote.packet-timeout 60
(lldb) settings set symbols.clang-modules-cache-path "/home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/module-cache-lldb/lldb-api"
(lldb) settings set use-color false
(lldb) target create "/home/worker/2.0.1/lldb-x86_64-debian/build/lldb-test-build.noindex/commands/gui/spawn-threads/TestGuiSpawnThreads.test_gui/a.out"

Parsing symbol table: a.out...


Locating external symbol file: a.out...


Locating external symbol file: a.out...


Locating external symbol file: a.out...


[0/10] Manually indexing DWARF: a.out...

[1/10] Manually indexing DWARF: a.out...


```

</details>

https://github.com/llvm/llvm-project/pull/107350