[clang] [clang][test] add testing for the AST matcher reference (PR #94248)

Fri Sep 27 04:45:37 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-clang-x86_64-sie-ubuntu-fast` running on `sie-linux-worker` while building `clang` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/144/builds/8114

<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)
...
25.601 [872/34/113] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/RangeSetTest.cpp.o
25.618 [871/34/114] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/DebugSupportTest.cpp.o
25.689 [870/34/115] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/Z3CrosscheckOracleTest.cpp.o
26.151 [869/34/116] Linking CXX executable tools/clang/tools/extra/unittests/clang-move/ClangMoveTests
26.201 [868/34/117] Building CXX object tools/clang/unittests/Analysis/CMakeFiles/ClangAnalysisTests.dir/IntervalPartitionTest.cpp.o
26.343 [867/34/118] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/DeterminismTest.cpp.o
26.352 [866/34/119] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/MapLatticeTest.cpp.o
26.529 [865/34/120] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/TestReturnValueUnderConstruction.cpp.o
26.710 [864/34/121] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/SValTest.cpp.o
26.752 [863/34/122] Generating ASTMatchersDocTests.cpp
FAILED: tools/clang/unittests/ASTMatchers/ASTMatchersDocTests.cpp /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/unittests/ASTMatchers/ASTMatchersDocTests.cpp 
cd /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/unittests/ASTMatchers && /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py --input-file /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/include/clang/ASTMatchers/ASTMatchers.h --output-file /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/build/tools/clang/unittests/ASTMatchers/ASTMatchersDocTests.cpp
Traceback (most recent call last):
  File "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py", line 1165, in <module>
    main()
  File "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py", line 1130, in main
    [r.build_test_case() for r in results[0]],
  File "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py", line 1130, in <listcomp>
    [r.build_test_case() for r in results[0]],
  File "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py", line 620, in build_test_case
    if not can_code_compile(self.code, self.headers, self.compile_args):
  File "/home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/generate_ast_matcher_doc_tests.py", line 477, in can_code_compile
    res = run(invocation, cwd=tmp_path, check=False)
  File "/usr/lib/python3.10/subprocess.py", line 503, in run
    with Popen(*popenargs, **kwargs) as process:
  File "/usr/lib/python3.10/subprocess.py", line 971, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.10/subprocess.py", line 1863, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'clang'
26.777 [863/33/123] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/CFGMatchSwitchTest.cpp.o
27.115 [863/32/124] Building CXX object tools/clang/tools/extra/unittests/clang-tidy/CMakeFiles/ClangTidyTests.dir/AddConstTest.cpp.o
28.277 [863/31/125] Building CXX object tools/clang/unittests/Analysis/CMakeFiles/ClangAnalysisTests.dir/ExprMutationAnalyzerTest.cpp.o
29.291 [863/30/126] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/LoggerTest.cpp.o
29.582 [863/29/127] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/MatchSwitchTest.cpp.o
29.790 [863/28/128] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/ChromiumCheckModelTest.cpp.o
31.063 [863/27/129] Building CXX object tools/clang/tools/extra/unittests/clang-tidy/CMakeFiles/ClangTidyTests.dir/TransformerClangTidyCheckTest.cpp.o
32.117 [863/26/130] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/DataflowEnvironmentTest.cpp.o
39.280 [863/25/131] Building CXX object tools/clang/tools/extra/unittests/clang-tidy/CMakeFiles/ClangTidyTests.dir/OverlappingReplacementsTest.cpp.o
40.888 [863/24/132] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/TestingSupport.cpp.o
41.338 [863/23/133] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ASTContextParentMapTest.cpp.o
41.625 [863/22/134] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/CallDescriptionTest.cpp.o
42.036 [863/21/135] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/StoreTest.cpp.o
42.524 [863/20/136] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ASTDumperTest.cpp.o
42.624 [863/19/137] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/RecordOpsTest.cpp.o
42.969 [863/18/138] Building CXX object tools/clang/unittests/AST/CMakeFiles/ASTTests.dir/ASTExprTest.cpp.o
43.208 [863/17/139] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/IsCLibraryFunctionTest.cpp.o
43.227 [863/16/140] Building CXX object tools/clang/unittests/Analysis/FlowSensitive/CMakeFiles/ClangAnalysisFlowSensitiveTests.dir/SignAnalysisTest.cpp.o
43.377 [863/15/141] Building CXX object tools/clang/unittests/StaticAnalyzer/CMakeFiles/StaticAnalysisTests.dir/ParamRegionTest.cpp.o

```

</details>

https://github.com/llvm/llvm-project/pull/94248