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

Mon Jun 24 21:06:31 PDT 2024

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-test-suite` running on `ppc64le-clang-test-suite` while building `clang` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/95/builds/428

Here is the relevant piece of the build log for the reference:
```
Step 5 (build-unified-tree) failure: build (failure)
...
36.266 [50/93/139] Linking CXX executable bin/clang-fuzzer-dictionary
37.875 [50/92/140] Building CXX object tools/clang/tools/extra/clang-tidy/abseil/CMakeFiles/obj.clangTidyAbseilModule.dir/StringFindStrContainsCheck.cpp.o
38.113 [50/91/141] Building CXX object tools/clang/tools/extra/clang-include-fixer/CMakeFiles/obj.clangIncludeFixer.dir/IncludeFixer.cpp.o
38.231 [49/91/142] Linking CXX static library lib/libclangIncludeFixer.a
38.334 [47/92/143] Linking CXX static library lib/libclangIncludeFixerPlugin.a
39.611 [47/91/144] Building CXX object tools/clang/tools/extra/clang-tidy/abseil/CMakeFiles/obj.clangTidyAbseilModule.dir/AbseilTidyModule.cpp.o
39.617 [47/90/145] Building CXX object tools/clang/tools/extra/clang-tidy/abseil/CMakeFiles/obj.clangTidyAbseilModule.dir/CleanupCtadCheck.cpp.o
39.725 [47/89/146] Linking CXX executable bin/clang-offload-packager
40.238 [47/88/147] Building CXX object tools/clang/tools/extra/clangd/tool/CMakeFiles/obj.clangdMain.dir/Check.cpp.o
42.086 [47/87/148] 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 /usr/lib64/ccache/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/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/tools/clang/tools/extra/clangd -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/clangd -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/clangd/../include-cleaner/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/tools/clang/tools/extra/clangd/../clang-tidy -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/tools/clang/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/build/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/llvm/include -I/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/pseudo/lib/../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-noexcept-type -Wdelete-non-virtual-dtor -Wno-comment -Wno-misleading-indentation -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -fno-strict-aliasing -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -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/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/clangd/Format.cpp
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/clangd/Format.cpp: In function ‘std::vector<clang::tooling::Replacement> clang::clangd::formatIncremental(llvm::StringRef, unsigned int, llvm::StringRef, clang::format::FormatStyle)’:
/home/buildbots/llvm-external-buildbots/workers/ppc64le-clang-test-suite/clang-ppc64le-test-suite/llvm-project/clang-tools-extra/clangd/Format.cpp:284:11: error: ‘struct clang::format::FormatStyle’ has no member named ‘KeepEmptyLinesAtTheStartOfBlocks’; did you mean ‘KeepEmptyLinesStyle’?
     Style.KeepEmptyLinesAtTheStartOfBlocks = true;
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
           KeepEmptyLinesStyle
42.690 [47/86/149] Building CXX object lib/LTO/CMakeFiles/LLVMLTO.dir/LTO.cpp.o
43.659 [47/85/150] Linking CXX executable bin/llvm-libtool-darwin
43.891 [47/84/151] Linking CXX executable bin/llvm-lipo
43.926 [47/83/152] Building CXX object tools/clang/tools/extra/clang-tidy/bugprone/CMakeFiles/obj.clangTidyBugproneModule.dir/StringviewNullptrCheck.cpp.o
44.020 [47/82/153] Building CXX object tools/clang/tools/extra/clangd/tool/CMakeFiles/obj.clangdMain.dir/ClangdMain.cpp.o
48.213 [47/81/154] Building CXX object tools/clang/tools/extra/clang-tidy/CMakeFiles/obj.clangTidy.dir/ClangTidy.cpp.o
48.889 [47/80/155] Building CXX object tools/clang/tools/extra/clang-tidy/bugprone/CMakeFiles/obj.clangTidyBugproneModule.dir/BugproneTidyModule.cpp.o
51.848 [47/79/156] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/RemoveUsingNamespace.cpp.o
51.911 [47/78/157] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/SymbolCollector.cpp.o
53.057 [47/77/158] Building CXX object tools/clang/tools/extra/clang-change-namespace/CMakeFiles/obj.clangChangeNamespace.dir/ChangeNamespace.cpp.o
55.521 [47/76/159] Linking CXX executable bin/modularize
56.582 [47/75/160] Linking CXX executable bin/lli
57.444 [47/74/161] Linking CXX executable bin/clang-doc
61.233 [47/73/162] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/Selection.cpp.o
61.513 [47/72/163] Linking CXX executable bin/llvm-exegesis
64.468 [47/71/164] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/CollectMacros.cpp.o
64.942 [47/70/165] Linking CXX executable bin/clang-query
65.549 [47/69/166] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/YAMLSerialization.cpp.o
65.561 [47/68/167] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/ParsedAST.cpp.o
66.201 [47/67/168] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/SemanticSelection.cpp.o
66.681 [47/66/169] Building CXX object tools/clang/tools/extra/clangd/fuzzer/CMakeFiles/clangd-fuzzer.dir/clangd-fuzzer.cpp.o
66.764 [47/65/170] Linking CXX executable bin/clang-include-fixer
66.890 [47/64/171] Linking CXX executable bin/clang-extdef-mapping
66.931 [47/63/172] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/BackgroundQueue.cpp.o
67.115 [47/62/173] Linking CXX executable bin/clang-move
67.248 [47/61/174] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/IncludeCleaner.cpp.o
67.256 [47/60/175] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/AddUsing.cpp.o
67.665 [47/59/176] Building CXX object tools/clang/tools/extra/clangd/index/dex/dexp/CMakeFiles/dexp.dir/Dexp.cpp.o
67.830 [47/58/177] Building CXX object tools/clang/tools/extra/clangd/refactor/tweaks/CMakeFiles/obj.clangDaemonTweaks.dir/ExtractVariable.cpp.o
67.850 [47/57/178] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/index/BackgroundRebuild.cpp.o
68.257 [47/56/179] Building CXX object tools/clang/tools/extra/clangd/CMakeFiles/obj.clangDaemon.dir/DumpAST.cpp.o
68.532 [47/55/180] Linking CXX executable bin/clang-diff

```

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