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

Mon Jun 24 21:06:25 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `llvm-x86_64-debian-dylib` running on `gribozavr4` while building `clang` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/60/builds/837

Here is the relevant piece of the build log for the reference:
```
Step 5 (build-unified-tree) failure: build (failure)
...
61.916 [482/96/6320] Building CXX object tools/lldb/source/Plugins/Process/gdb-remote/CMakeFiles/lldbPluginProcessGDBRemote.dir/ProcessGDBRemote.cpp.o
61.924 [481/96/6321] Building CXX object tools/lldb/source/Plugins/Process/gdb-remote/CMakeFiles/lldbPluginProcessGDBRemote.dir/ProcessGDBRemoteLog.cpp.o
61.932 [480/96/6322] Building CXX object tools/lldb/source/Plugins/Process/gdb-remote/CMakeFiles/lldbPluginProcessGDBRemote.dir/ThreadGDBRemote.cpp.o
61.944 [479/96/6323] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/AuxVector.cpp.o
61.957 [478/96/6324] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/FreeBSDSignals.cpp.o
61.970 [477/96/6325] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/GDBRemoteSignals.cpp.o
61.985 [476/96/6326] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/HistoryThread.cpp.o
61.986 [475/96/6327] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/HistoryUnwind.cpp.o
61.997 [474/96/6328] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/InferiorCallPOSIX.cpp.o
62.009 [473/96/6329] 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 
CCACHE_CPP2=yes CCACHE_HASHDIR=yes /usr/bin/ccache /usr/bin/clang++ -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/b/1/llvm-x86_64-debian-dylib/build/tools/clang/tools/extra/clangd -I/b/1/llvm-x86_64-debian-dylib/llvm-project/clang-tools-extra/clangd -I/b/1/llvm-x86_64-debian-dylib/llvm-project/clang-tools-extra/clangd/../include-cleaner/include -I/b/1/llvm-x86_64-debian-dylib/build/tools/clang/tools/extra/clangd/../clang-tidy -I/b/1/llvm-x86_64-debian-dylib/llvm-project/clang/include -I/b/1/llvm-x86_64-debian-dylib/build/tools/clang/include -I/b/1/llvm-x86_64-debian-dylib/build/include -I/b/1/llvm-x86_64-debian-dylib/llvm-project/llvm/include -I/b/1/llvm-x86_64-debian-dylib/llvm-project/clang-tools-extra/pseudo/lib/../include -fPIC -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 /b/1/llvm-x86_64-debian-dylib/llvm-project/clang-tools-extra/clangd/Format.cpp
/b/1/llvm-x86_64-debian-dylib/llvm-project/clang-tools-extra/clangd/Format.cpp:284:11: error: no member named 'KeepEmptyLinesAtTheStartOfBlocks' in 'clang::format::FormatStyle'
    Style.KeepEmptyLinesAtTheStartOfBlocks = true;
    ~~~~~ ^
1 error generated.
62.009 [473/95/6330] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/LinuxProcMaps.cpp.o
62.009 [473/94/6331] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/LinuxSignals.cpp.o
62.010 [473/93/6332] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/MemoryTagManagerAArch64MTE.cpp.o
62.010 [473/92/6333] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/NativeProcessSoftwareSingleStep.cpp.o
62.010 [473/91/6334] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/NativeRegisterContextDBReg_arm64.cpp.o
62.011 [473/90/6335] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/NativeRegisterContextDBReg_x86.cpp.o
62.011 [473/89/6336] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/NativeRegisterContextRegisterInfo.cpp.o
62.011 [473/88/6337] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/NetBSDSignals.cpp.o
62.012 [473/87/6338] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContext_x86.cpp.o
62.012 [473/86/6339] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextDarwin_arm.cpp.o
62.012 [473/85/6340] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextDarwin_arm64.cpp.o
62.013 [473/84/6341] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextDarwin_i386.cpp.o
62.013 [473/83/6342] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextDarwin_x86_64.cpp.o
62.014 [473/82/6343] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextDummy.cpp.o
62.014 [473/81/6344] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextFreeBSD_i386.cpp.o
62.014 [473/80/6345] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextFreeBSD_mips64.cpp.o
62.015 [473/79/6346] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextFreeBSD_powerpc.cpp.o
62.015 [473/78/6347] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextFreeBSD_x86_64.cpp.o
62.016 [473/77/6348] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextHistory.cpp.o
62.016 [473/76/6349] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextLinux_i386.cpp.o
62.016 [473/75/6350] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextLinux_x86_64.cpp.o
62.017 [473/74/6351] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextLinux_s390x.cpp.o
62.017 [473/73/6352] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextMach_arm.cpp.o
62.017 [473/72/6353] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextMach_i386.cpp.o
62.017 [473/71/6354] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextMach_x86_64.cpp.o
62.018 [473/70/6355] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextMemory.cpp.o
62.018 [473/69/6356] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextNetBSD_i386.cpp.o
62.018 [473/68/6357] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextNetBSD_x86_64.cpp.o
62.019 [473/67/6358] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextOpenBSD_i386.cpp.o
62.019 [473/66/6359] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextOpenBSD_x86_64.cpp.o
62.020 [473/65/6360] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextPOSIX_arm.cpp.o
62.020 [473/64/6361] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextPOSIX_arm64.cpp.o
62.021 [473/63/6362] Building CXX object tools/lldb/source/Plugins/Process/Utility/CMakeFiles/lldbPluginProcessUtility.dir/RegisterContextPOSIX_loongarch64.cpp.o

```

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