[llvm] [YAML] Make `std::array` available (PR #116059)

Wed Nov 13 18:30:42 PST 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `ml-opt-dev-x86-64` running on `ml-opt-dev-x86-64-b2` while building `llvm` at step 6 "test-build-unified-tree-check-all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/137/builds/8583

<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)
...
10.066 [30/26/671] Linking CXX executable unittests/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerTests
10.177 [29/26/672] Linking CXX executable unittests/Target/AMDGPU/AMDGPUTests
11.019 [28/26/673] Linking CXX executable unittests/Transforms/Coroutines/CoroTests
11.051 [27/26/674] Building CXX object unittests/Object/CMakeFiles/ObjectTests.dir/DXContainerTest.cpp.o
11.063 [26/26/675] Linking CXX executable unittests/Transforms/Instrumentation/InstrumentationTests
11.685 [25/26/676] Building CXX object unittests/ObjectYAML/CMakeFiles/ObjectYAMLTests.dir/DWARFYAMLTest.cpp.o
11.689 [24/26/677] Linking CXX executable unittests/Target/X86/X86Tests
11.800 [23/26/678] Linking CXX executable unittests/Transforms/Utils/UtilsTests
12.058 [22/26/679] Linking CXX executable unittests/tools/llvm-cfi-verify/CFIVerifyTests
12.108 [21/26/680] Building CXX object unittests/Support/CMakeFiles/SupportTests.dir/YAMLIOTest.cpp.o
FAILED: unittests/Support/CMakeFiles/SupportTests.dir/YAMLIOTest.cpp.o 
ccache /usr/bin/c++ -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/b/ml-opt-dev-x86-64-b1/build/unittests/Support -I/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/unittests/Support -I/b/ml-opt-dev-x86-64-b1/build/include -I/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/include -I/b/ml-opt-dev-x86-64-b1/llvm-project/third-party/unittest/googletest/include -I/b/ml-opt-dev-x86-64-b1/llvm-project/third-party/unittest/googlemock/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -fno-lifetime-dse -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-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wno-dangling-else -Wno-variadic-macros -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -Wno-suggest-override -std=c++17 -MD -MT unittests/Support/CMakeFiles/SupportTests.dir/YAMLIOTest.cpp.o -MF unittests/Support/CMakeFiles/SupportTests.dir/YAMLIOTest.cpp.o.d -o unittests/Support/CMakeFiles/SupportTests.dir/YAMLIOTest.cpp.o -c /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/unittests/Support/YAMLIOTest.cpp
In file included from /b/ml-opt-dev-x86-64-b1/llvm-project/llvm/unittests/Support/YAMLIOTest.cpp:17:
/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/include/llvm/Support/YAMLTraits.h: In instantiation of ‘std::enable_if_t<llvm::yaml::missingTraits<T, llvm::yaml::EmptyContext>::value, void> llvm::yaml::yamlize(llvm::yaml::IO&, T&, bool, llvm::yaml::EmptyContext&) [with T = std::array<int, 4>; std::enable_if_t<llvm::yaml::missingTraits<T, llvm::yaml::EmptyContext>::value, void> = void]’:
/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/include/llvm/Support/YAMLTraits.h:960:14:   required from ‘void llvm::yaml::IO::processKey(const char*, T&, bool, Context&) [with T = std::array<int, 4>; Context = llvm::yaml::EmptyContext]’
/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/include/llvm/Support/YAMLTraits.h:882:21:   required from ‘void llvm::yaml::IO::mapRequired(const char*, T&) [with T = std::array<int, 4>]’
/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/unittests/Support/YAMLIOTest.cpp:3388:39:   required from here
/b/ml-opt-dev-x86-64-b1/llvm-project/llvm/include/llvm/Support/YAMLTraits.h:1172:36: error: invalid application of ‘sizeof’ to incomplete type ‘llvm::yaml::MissingTrait<std::array<int, 4> >’
 1172 |   char missing_yaml_trait_for_type[sizeof(MissingTrait<T>)];
      |                                    ^~~~~~~~~~~~~~~~~~~~~~~
12.292 [21/25/681] Linking CXX executable unittests/Transforms/Scalar/ScalarTests
12.630 [21/24/682] Linking CXX executable unittests/Target/TargetMachineCTests
12.650 [21/23/683] Building CXX object unittests/ObjectYAML/CMakeFiles/ObjectYAMLTests.dir/DXContainerYAMLTest.cpp.o
12.845 [21/22/684] Building CXX object unittests/DebugInfo/BTF/CMakeFiles/DebugInfoBTFTests.dir/BTFParserTest.cpp.o
14.510 [21/21/685] Building CXX object unittests/ObjectYAML/CMakeFiles/ObjectYAMLTests.dir/ELFYAMLTest.cpp.o
16.650 [21/20/686] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/ResultAggregatorTest.cpp.o
17.005 [21/19/687] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SubprocessMemoryTest.cpp.o
18.982 [21/18/688] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SchedClassResolutionTest.cpp.o
19.616 [21/17/689] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/ClusteringTest.cpp.o
20.328 [21/16/690] Building CXX object unittests/Object/CMakeFiles/ObjectTests.dir/ELFObjectFileTest.cpp.o
20.657 [21/15/691] Building CXX object unittests/ProfileData/CMakeFiles/ProfileDataTests.dir/MemProfTest.cpp.o
21.178 [21/14/692] Building CXX object unittests/Target/ARM/CMakeFiles/ARMTests.dir/MachineInstrTest.cpp.o
21.383 [21/13/693] Building CXX object unittests/ProfileData/CMakeFiles/ProfileDataTests.dir/CoverageMappingTest.cpp.o
21.976 [21/12/694] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/PowerPC/AnalysisTest.cpp.o
23.845 [21/11/695] Building CXX object unittests/Target/ARM/CMakeFiles/ARMTests.dir/InstSizes.cpp.o
23.867 [21/10/696] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/BenchmarkRunnerTest.cpp.o
24.239 [21/9/697] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/BenchmarkResultTest.cpp.o
27.572 [21/8/698] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/PowerPC/TargetTest.cpp.o
27.573 [21/7/699] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/AArch64/TargetTest.cpp.o
28.995 [21/6/700] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/PowerPC/SnippetGeneratorTest.cpp.o
30.852 [21/5/701] Building CXX object unittests/ProfileData/CMakeFiles/ProfileDataTests.dir/InstrProfTest.cpp.o
31.489 [21/4/702] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SnippetRepetitorTest.cpp.o
32.003 [21/3/703] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/TargetTest.cpp.o
32.108 [21/2/704] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SnippetFileTest.cpp.o
34.464 [21/1/705] Building CXX object unittests/tools/llvm-exegesis/CMakeFiles/LLVMExegesisTests.dir/X86/SnippetGeneratorTest.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/116059