[clang] [clang-format] Add option to remove leading blank lines (PR #91221)

Mon Jun 24 21:07:02 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-aarch64-quick` running on `linaro-clang-aarch64-quick` while building `clang` at step 4 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/65/builds/469

Here is the relevant piece of the build log for the reference:
```
Step 4 (build stage 1) failure: 'ninja' (failure)
...
[125/269] Linking CXX static library lib/libclangIncludeFixer.a
[126/269] Generating ../../bin/llvm-install-name-tool
[127/269] Generating ../../bin/llvm-bitcode-strip
[128/269] Generating ../../bin/llvm-strip
[129/269] Generating ../../bin/llvm-otool
[130/269] Generating ../../bin/llvm-windres
[131/269] Generating ../../bin/llvm-readelf
[132/269] Generating ../../bin/llvm-addr2line
[133/269] Copying llvm-locstats into /home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/./bin
[134/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Format.cpp.o
FAILED: tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Format.cpp.o 
/usr/local/bin/c++ -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd -I/home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/clang-tools-extra/clangd -I/home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/clang-tools-extra/clangd/../include-cleaner/include -I/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/tools/extra/clangd/../clang-tidy -I/home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/clang/include -I/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/tools/clang/include -I/home/tcwg-buildbot/worker/clang-aarch64-quick/stage1/include -I/home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/llvm/include -I/home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/clang-tools-extra/pseudo/lib/../include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -Wno-nested-anon-types -O3 -DNDEBUG  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -std=c++17 -MD -MT tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Format.cpp.o -MF tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Format.cpp.o.d -o tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Format.cpp.o -c /home/tcwg-buildbot/worker/clang-aarch64-quick/llvm/clang-tools-extra/clangd/Format.cpp
../llvm/clang-tools-extra/clangd/Format.cpp:284:11: error: no member named 'KeepEmptyLinesAtTheStartOfBlocks' in 'clang::format::FormatStyle'
  284 |     Style.KeepEmptyLinesAtTheStartOfBlocks = true;
      |     ~~~~~ ^
1 error generated.
[135/269] Linking CXX executable bin/nvptx-arch
[136/269] Linking CXX executable bin/amdgpu-arch
[137/269] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
[138/269] Building CXX object tools/clang/tools/extra/clang-tidy/abseil/CMakeFiles/obj.clangTidyAbseilModule.dir/AbseilTidyModule.cpp.o
[139/269] Linking CXX executable bin/yaml2obj
[140/269] Linking CXX executable bin/verify-uselistorder
[141/269] Linking CXX executable bin/sancov
[142/269] Building CXX object tools/clang/tools/extra/clang-tidy/misc/CMakeFiles/obj.clangTidyMiscModule.dir/IncludeCleanerCheck.cpp.o
[143/269] Building CXX object tools/clang/tools/extra/clangd/tool/CMakeFiles/obj.clangdMain.dir/Check.cpp.o
[144/269] Linking CXX executable bin/llvm-xray
[145/269] Building CXX object tools/clang/tools/extra/clang-tidy/bugprone/CMakeFiles/obj.clangTidyBugproneModule.dir/StringviewNullptrCheck.cpp.o
[146/269] Linking CXX executable bin/sanstats
[147/269] Linking CXX executable bin/obj2yaml
[148/269] Building CXX object tools/clang/tools/extra/clang-tidy/utils/CMakeFiles/obj.clangTidyUtils.dir/TransformerClangTidyCheck.cpp.o
[149/269] Building CXX object lib/CodeGen/AsmPrinter/CMakeFiles/LLVMAsmPrinter.dir/AsmPrinter.cpp.o
[150/269] Building CXX object tools/clang/tools/extra/tool-template/CMakeFiles/tool-template.dir/ToolTemplate.cpp.o
[151/269] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/AddUsing.cpp.o
[152/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/ASTSignals.cpp.o
[153/269] Building CXX object tools/clang/tools/extra/clangd/tool/CMakeFiles/obj.clangdMain.dir/ClangdMain.cpp.o
[154/269] Building CXX object tools/clang/tools/extra/include-cleaner/lib/CMakeFiles/obj.clangIncludeCleaner.dir/WalkAST.cpp.o
[155/269] Building CXX object tools/clang/tools/extra/clang-change-namespace/CMakeFiles/obj.clangChangeNamespace.dir/ChangeNamespace.cpp.o
[156/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/HeaderSourceSwitch.cpp.o
[157/269] Building CXX object tools/clang/tools/extra/clang-tidy/bugprone/CMakeFiles/obj.clangTidyBugproneModule.dir/BugproneTidyModule.cpp.o
[158/269] Building CXX object tools/clang/lib/Tooling/Refactoring/CMakeFiles/obj.clangToolingRefactoring.dir/Rename/USRLocFinder.cpp.o
[159/269] Building CXX object tools/clang/tools/extra/clang-tidy/CMakeFiles/obj.clangTidy.dir/ClangTidy.cpp.o
[160/269] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/RemoveUsingNamespace.cpp.o
[161/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/BackgroundRebuild.cpp.o
[162/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/BackgroundQueue.cpp.o
[163/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Quality.cpp.o
[164/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/CollectMacros.cpp.o
[165/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/IndexAction.cpp.o
[166/269] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/YAMLSerialization.cpp.o
[167/269] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ExtractVariable.cpp.o

```

https://github.com/llvm/llvm-project/pull/91221