[clang] [clang] Cleanup docs and code for legacy no_sanitize attributes (NFC). (PR #161311)

Tue Sep 30 11:46:13 PDT 2025

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-m68k-linux-cross` running on `suse-gary-m68k-cross` while building `clang` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/27/builds/16833

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
...
[159/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/CallDescriptionTest.cpp.o
[160/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/WatchedLiteralsSolverTest.cpp.o
[161/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/ParamRegionTest.cpp.o
[162/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/SValSimplifyerTest.cpp.o
[163/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/TestReturnValueUnderConstruction.cpp.o
[164/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/StoreTest.cpp.o
[165/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/SymbolReaperTest.cpp.o
[166/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/UncheckedOptionalAccessModelTest.cpp.o
[167/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/SValTest.cpp.o
[168/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TransferTest.cpp.o
FAILED: tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TransferTest.cpp.o 
/usr/bin/c++ -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/tools/clang/unittests -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/unittests -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/tools/clang/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/stage1/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/llvm/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/unittests/Tooling -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/third-party/unittest/googletest/include -I/var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/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-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -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/FlowSensitive/TransferTest.cpp.o -MF tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TransferTest.cpp.o.d -o tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TransferTest.cpp.o -c /var/lib/buildbot/workers/suse-gary-m68k-cross/clang-m68k-linux-cross/llvm/clang/unittests/Analysis/FlowSensitive/TransferTest.cpp
c++: fatal error: Killed signal terminated program cc1plus
compilation terminated.
[169/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/Dynamic/VariantValueTest.cpp.o
[170/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ByteCode/toAPValue.cpp.o
[171/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTExprTest.cpp.o
[172/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ByteCode/Descriptor.cpp.o
[173/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTContextParentMapTest.cpp.o
[174/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTDumperTest.cpp.o
[175/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/GtestMatchersTest.cpp.o
[176/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/EvaluateAsRValueTest.cpp.o
[177/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/Dynamic/RegistryTest.cpp.o
[178/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/Dynamic/ParserTest.cpp.o
[179/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterFixtures.cpp.o
[180/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ExternalASTSourceTest.cpp.o
[181/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/DeclBaseTest.cpp.o
[182/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ConceptPrinterTest.cpp.o
[183/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/DataCollectionTest.cpp.o
[184/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/DeclTest.cpp.o
[185/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/ASTMatchersInternalTest.cpp.o
[186/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/Analysis/FlowSensitive/TypeErasedDataflowAnalysisTest.cpp.o
[187/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/StaticAnalyzer/RangeSetTest.cpp.o
[188/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/DeclPrinterTest.cpp.o
[189/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterVisibilityTest.cpp.o
[190/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTTraverserTest.cpp.o
[191/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/AttrTest.cpp.o
[192/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterObjCTest.cpp.o
[193/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTTypeTraitsTest.cpp.o
[194/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterODRStrategiesTest.cpp.o
[195/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/NamedDeclPrinterTest.cpp.o
[196/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ProfilingTest.cpp.o
[197/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterGenericRedeclTest.cpp.o
[198/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/ASTMatchersNodeTest.cpp.o
[199/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/ASTMatchersNarrowingTest.cpp.o
[200/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/ASTMatchers/ASTMatchersTraversalTest.cpp.o
[201/377] Building CXX object tools/clang/unittests/CMakeFiles/AllClangUnitTests.dir/AST/ASTImporterTest.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/161311