[clang] [LifetimeSafety] Revamp test suite using unittests (PR #149158)

[LLVM Continuous Integration via cfe-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-test-suite` running on `ppc64le-clang-test-suite` while building `clang` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/16092

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

```
Step 6 (test-build-unified-tree-check-all) failure: test (failure)
...
21.672 [5/4/77] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Noinst-Test
21.833 [5/3/78] Generating ASAN_NOINST_TEST_OBJECTS.gtest-all.cc.powerpc64le-calls.o
22.029 [4/3/79] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Noinst-Test
23.542 [4/2/80] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-calls.o
23.789 [2/3/81] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-calls-Dynamic-Test
23.977 [2/2/82] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-calls-Test
27.583 [2/1/83] Generating ASAN_INST_TEST_OBJECTS.gtest-all.cc.powerpc64le-inline.o
27.829 [0/2/84] Generating POWERPC64LELinuxDynamicConfig/Asan-powerpc64le-inline-Dynamic-Test
28.017 [0/1/85] Generating POWERPC64LELinuxConfig/Asan-powerpc64le-inline-Test
13.649 [7/47/1172] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/LifetimeSafetyTest.cpp.o
FAILED: tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/LifetimeSafetyTest.cpp.o 
ccache /usr/lib64/ccache/c++ -DEXPERIMENTAL_KEY_INSTRUCTIONS -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/tools/clang/unittests -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/unittests -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/tools/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/unittests/Tooling -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/third-party/unittest/googletest/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/third-party/unittest/googlemock/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -O3 -DNDEBUG -std=c++17  -Wno-variadic-macros -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -Wno-suggest-override -MD -MT tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/LifetimeSafetyTest.cpp.o -MF tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/LifetimeSafetyTest.cpp.o.d -o tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/LifetimeSafetyTest.cpp.o -c /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/unittests/Analysis/LifetimeSafetyTest.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/unittests/Analysis/LifetimeSafetyTest.cpp:70:28: error: declaration of ‘std::unique_ptr<clang::TestAST> clang::lifetimes::internal::{anonymous}::LifetimeTestRunner::TestAST’ [-fpermissive]
   std::unique_ptr<TestAST> TestAST;
                            ^~~~~~~
In file included from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/unittests/Analysis/LifetimeSafetyTest.cpp:12:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/include/clang/Testing/TestAST.h:72:7: error: changes meaning of ‘TestAST’ from ‘class clang::TestAST’ [-fpermissive]
 class TestAST {
       ^~~~~~~
23.548 [7/15/1204] Building CXX object unittests/Transforms/Instrumentation/CMakeFiles/InstrumentationTests.dir/MemProfUseTest.cpp.o
In file included from /usr/include/c++/8/cassert:44,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/InstrProf.h:40,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/DataAccessProf.h:25,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/IndexedMemProfData.h:18,
                 from /home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/unittests/Transforms/Instrumentation/MemProfUseTest.cpp:15:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/InstrProf.h: In member function ‘llvm::ArrayRef<llvm::InstrProfValueSiteRecord> llvm::InstrProfRecord::getValueSitesForKind(uint32_t) const’:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/InstrProf.h:1018:23: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
     assert(IPVK_First <= ValueKind && ValueKind <= IPVK_Last &&
            ~~~~~~~~~~~^~~~~~~~~~~~
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/InstrProf.h: In member function ‘std::vector<llvm::InstrProfValueSiteRecord>& llvm::InstrProfRecord::getOrCreateValueSitesForKind(uint32_t)’:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include/llvm/ProfileData/InstrProf.h:1027:23: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
     assert(IPVK_First <= ValueKind && ValueKind <= IPVK_Last &&
            ~~~~~~~~~~~^~~~~~~~~~~~
31.090 [7/5/1214] Linking CXX executable unittests/CodeGen/CodeGenTests
35.853 [7/3/1216] Linking CXX executable tools/clang/unittests/Interpreter/ExceptionTests/ClangReplInterpreterExceptionTests
43.696 [7/2/1217] Linking CXX executable tools/clang/unittests/Interpreter/ClangReplInterpreterTests
46.225 [7/1/1218] Linking CXX executable tools/clang/tools/extra/clangd/unittests/ClangdTests
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/149158