[libcxx-commits] [libcxx] 800fec1 - [libc++] Enforce formatting for already formatted and new files and ignore the formatting of tests

Nikolas Klauser via libcxx-commits libcxx-commits at lists.llvm.org
Tue Feb 14 08:28:40 PST 2023 

Author: Nikolas Klauser
Date: 2023-02-14T17:28:35+01:00
New Revision: 800fec13a81fb9553d7a8d681ba01a0700cbdf26

URL: https://github.com/llvm/llvm-project/commit/800fec13a81fb9553d7a8d681ba01a0700cbdf26
DIFF: https://github.com/llvm/llvm-project/commit/800fec13a81fb9553d7a8d681ba01a0700cbdf26.diff

LOG: [libc++] Enforce formatting for already formatted and new files and ignore the formatting of tests

It is quite confusing to newcomers that the formatting check gets mostly ignored. To fix that, enforce the formatting for new file and already formatted files, but ignore it for any files that aren't formatted already. We ignore the tests for now, since almost no test is formatted currently, and they are changed almost never.

Reviewed By: ldionne, Mordante, #libc

Spies: arichardson, fedor.sergeev, phosek, sstefan1, libcxx-commits, abrachet

Differential Revision: https://reviews.llvm.org/D142180

Added: 
    libcxx/utils/data/ignore_format.txt
    libcxx/utils/generate_ignore_format.sh

Modified: 
    libcxx/utils/ci/buildkite-pipeline.yml
    libcxx/utils/ci/run-buildbot

Removed: 
    


################################################################################
diff  --git a/libcxx/utils/ci/buildkite-pipeline.yml b/libcxx/utils/ci/buildkite-pipeline.yml
index cd4adb8996a06..934fe94d9242a 100644
--- a/libcxx/utils/ci/buildkite-pipeline.yml
+++ b/libcxx/utils/ci/buildkite-pipeline.yml
@@ -46,8 +46,6 @@ steps:
       automatic:
         - exit_status: -1  # Agent was lost
           limit: 2
-    soft_fail:
-        - exit_status: 1
     timeout_in_minutes: 120
 
   - label: "Generated output"
@@ -58,6 +56,7 @@ steps:
     env:
         CC: "clang-${LLVM_HEAD_VERSION}"
         CXX: "clang++-${LLVM_HEAD_VERSION}"
+        CLANG_FORMAT: "clang-format-${LLVM_STABLE_VERSION}"
     agents:
       queue: "libcxx-builders"
       os: "linux"

diff  --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
index fc379710e2530..0b79798db6553 100755
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -38,6 +38,9 @@ CC                  The C compiler to use, this value is used by CMake. This
 CXX                 The C++ compiler to use, this value is used by CMake. This
                     variable is optional.
 
+CLANG_FORMAT        The clang-format binary to use when generating the format
+                    ignore list.
+
 GIT_CLANG_FORMAT    The git-clang-format binary to use in the 'format' builder.
                     When the value is omitted, it defaults to
                     'git-clang-format'. This variable or its fallback must work
@@ -185,9 +188,7 @@ check-format)
     ${GIT_CLANG_FORMAT} \
         --
diff  \
         --extensions ',h,hh,hpp,hxx,c,cc,cxx,cpp' HEAD~1 \
-        -- \
-            libcxx/{benchmarks,include,src,test} \
-            libcxxabi/{fuzz,include,src,test} \
+        -- $(find libcxx/{benchmarks,include,src}/ -type f | grep -vf libcxx/utils/data/ignore_format.txt) \
         | tee ${BUILD_DIR}/clang-format.patch
     # Check if the 
diff  is empty, fail otherwise.
     ! grep -q '^--- a' ${BUILD_DIR}/clang-format.patch
@@ -211,6 +212,18 @@ check-generated-output)
         false
     fi
 
+    ${MONOREPO_ROOT}/libcxx/utils/generate_ignore_format.sh
+    git 
diff  | tee ${BUILD_DIR}/generated_output.patch
+    git ls-files -o --exclude-standard | tee ${BUILD_DIR}/generated_output.status
+    ! grep -q '^--- a' ${BUILD_DIR}/generated_output.patch || false
+    if [ -s ${BUILD_DIR}/generated_output.status ]; then
+        echo "It looks like the list of not formatted files has changed."
+        echo "If a file is now properly formatted with clang-format, remove the file name from "
+        echo "libcxx/utils/data/ignore_format.txt. Otherwise you have to fix the"
+        echo "formatting of some of the changed files."
+        false
+    fi
+
     # Reject patches that introduce non-ASCII characters or hard tabs.
     # Depends on LC_COLLATE set at the top of this script.
     ! grep -rn '[^ -~]' libcxx/include libcxx/src libcxx/test libcxx/benchmarks \

diff  --git a/libcxx/utils/data/ignore_format.txt b/libcxx/utils/data/ignore_format.txt
new file mode 100644
index 0000000000000..d978c37aa7694
--- /dev/null
+++ b/libcxx/utils/data/ignore_format.txt
@@ -0,0 +1,848 @@
+libcxx/benchmarks/CMakeLists.txt
+libcxx/benchmarks/CartesianBenchmarks.h
+libcxx/benchmarks/ContainerBenchmarks.h
+libcxx/benchmarks/GenerateInput.h
+libcxx/benchmarks/Utilities.h
+libcxx/benchmarks/VariantBenchmarks.h
+libcxx/benchmarks/algorithms/common.h
+libcxx/benchmarks/algorithms/lower_bound.bench.cpp
+libcxx/benchmarks/algorithms/make_heap.bench.cpp
+libcxx/benchmarks/algorithms/make_heap_then_sort_heap.bench.cpp
+libcxx/benchmarks/algorithms.partition_point.bench.cpp
+libcxx/benchmarks/algorithms/pop_heap.bench.cpp
+libcxx/benchmarks/algorithms/push_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_make_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_make_heap_then_sort_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_pop_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_push_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_sort.bench.cpp
+libcxx/benchmarks/algorithms/ranges_sort_heap.bench.cpp
+libcxx/benchmarks/algorithms/ranges_stable_sort.bench.cpp
+libcxx/benchmarks/algorithms/sort.bench.cpp
+libcxx/benchmarks/algorithms/sort_heap.bench.cpp
+libcxx/benchmarks/algorithms/stable_sort.bench.cpp
+libcxx/benchmarks/allocation.bench.cpp
+libcxx/benchmarks/deque.bench.cpp
+libcxx/benchmarks/filesystem.bench.cpp
+libcxx/benchmarks/formatter_float.bench.cpp
+libcxx/benchmarks/formatter_int.bench.cpp
+libcxx/benchmarks/format_to.bench.cpp
+libcxx/benchmarks/format_to_n.bench.cpp
+libcxx/benchmarks/function.bench.cpp
+libcxx/benchmarks/lit.cfg.py
+libcxx/benchmarks/lit.site.cfg.py.in
+libcxx/benchmarks/map.bench.cpp
+libcxx/benchmarks/ordered_set.bench.cpp
+libcxx/benchmarks/random.bench.cpp
+libcxx/benchmarks/string.bench.cpp
+libcxx/benchmarks/stringstream.bench.cpp
+libcxx/benchmarks/unordered_set_operations.bench.cpp
+libcxx/benchmarks/vector_operations.bench.cpp
+libcxx/include/CMakeLists.txt
+libcxx/include/__algorithm/binary_search.h
+libcxx/include/__algorithm/clamp.h
+libcxx/include/__algorithm/comp.h
+libcxx/include/__algorithm/comp_ref_type.h
+libcxx/include/__algorithm/copy_backward.h
+libcxx/include/__algorithm/copy.h
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+libcxx/include/__functional/operations.h
+libcxx/include/__functional/perfect_forward.h
+libcxx/include/__functional/pointer_to_binary_function.h
+libcxx/include/__functional/pointer_to_unary_function.h
+libcxx/include/__functional/ranges_operations.h
+libcxx/include/__functional/reference_wrapper.h
+libcxx/include/__functional/unary_function.h
+libcxx/include/__functional/unary_negate.h
+libcxx/include/__functional/unwrap_ref.h
+libcxx/include/__functional/weak_result_type.h
+libcxx/include/future
+libcxx/include/__fwd/get.h
+libcxx/include/__fwd/span.h
+libcxx/include/__fwd/string_view.h
+libcxx/include/__fwd/subrange.h
+libcxx/include/__hash_table
+libcxx/include/initializer_list
+libcxx/include/inttypes.h
+libcxx/include/iomanip
+libcxx/include/ios
+libcxx/include/__ios/fpos.h
+libcxx/include/iosfwd
+libcxx/include/istream
+libcxx/include/__iterator/access.h
+libcxx/include/__iterator/advance.h
+libcxx/include/__iterator/back_insert_iterator.h
+libcxx/include/__iterator/common_iterator.h
+libcxx/include/__iterator/concepts.h
+libcxx/include/__iterator/counted_iterator.h
+libcxx/include/__iterator/data.h
+libcxx/include/__iterator/default_sentinel.h
+libcxx/include/__iterator/distance.h
+libcxx/include/__iterator/empty.h
+libcxx/include/__iterator/erase_if_container.h
+libcxx/include/__iterator/front_insert_iterator.h
+libcxx/include/__iterator/incrementable_traits.h
+libcxx/include/__iterator/indirectly_comparable.h
+libcxx/include/__iterator/insert_iterator.h
+libcxx/include/__iterator/istreambuf_iterator.h
+libcxx/include/__iterator/istream_iterator.h
+libcxx/include/__iterator/iterator.h
+libcxx/include/__iterator/iterator_traits.h
+libcxx/include/__iterator/iter_move.h
+libcxx/include/__iterator/iter_swap.h
+libcxx/include/__iterator/mergeable.h
+libcxx/include/__iterator/move_iterator.h
+libcxx/include/__iterator/move_sentinel.h
+libcxx/include/__iterator/next.h
+libcxx/include/__iterator/ostreambuf_iterator.h
+libcxx/include/__iterator/ostream_iterator.h
+libcxx/include/__iterator/permutable.h
+libcxx/include/__iterator/prev.h
+libcxx/include/__iterator/projected.h
+libcxx/include/__iterator/readable_traits.h
+libcxx/include/__iterator/reverse_access.h
+libcxx/include/__iterator/reverse_iterator.h
+libcxx/include/__iterator/size.h
+libcxx/include/__iterator/sortable.h
+libcxx/include/__iterator/unreachable_sentinel.h
+libcxx/include/__iterator/wrap_iter.h
+libcxx/include/latch
+libcxx/include/libcxx.imp
+libcxx/include/limits
+libcxx/include/limits.h
+libcxx/include/list
+libcxx/include/__locale
+libcxx/include/locale
+libcxx/include/locale.h
+libcxx/include/map
+libcxx/include/math.h
+libcxx/include/__mbstate_t.h
+libcxx/include/memory
+libcxx/include/__memory/addressof.h
+libcxx/include/__memory/aligned_alloc.h
+libcxx/include/__memory/allocate_at_least.h
+libcxx/include/__memory/allocation_guard.h
+libcxx/include/__memory/allocator_arg_t.h
+libcxx/include/__memory/allocator_destructor.h
+libcxx/include/__memory/allocator.h
+libcxx/include/__memory/allocator_traits.h
+libcxx/include/__memory/assume_aligned.h
+libcxx/include/__memory/auto_ptr.h
+libcxx/include/__memory/builtin_new_allocator.h
+libcxx/include/__memory/compressed_pair.h
+libcxx/include/__memory/concepts.h
+libcxx/include/__memory/construct_at.h
+libcxx/include/__memory/destruct_n.h
+libcxx/include/__memory/pointer_traits.h
+libcxx/include/__memory/ranges_construct_at.h
+libcxx/include/__memory/ranges_uninitialized_algorithms.h
+libcxx/include/__memory/raw_storage_iterator.h
+libcxx/include/__memory/shared_ptr.h
+libcxx/include/__memory/temporary_buffer.h
+libcxx/include/__memory/temp_value.h
+libcxx/include/__memory/uninitialized_algorithms.h
+libcxx/include/__memory/unique_ptr.h
+libcxx/include/__memory/uses_allocator.h
+libcxx/include/module.modulemap.in
+libcxx/include/mutex
+libcxx/include/__mutex_base
+libcxx/include/new
+libcxx/include/__node_handle
+libcxx/include/numbers
+libcxx/include/numeric
+libcxx/include/__numeric/accumulate.h
+libcxx/include/__numeric/adjacent_
diff erence.h
+libcxx/include/__numeric/exclusive_scan.h
+libcxx/include/__numeric/gcd_lcm.h
+libcxx/include/__numeric/inclusive_scan.h
+libcxx/include/__numeric/inner_product.h
+libcxx/include/__numeric/iota.h
+libcxx/include/__numeric/midpoint.h
+libcxx/include/__numeric/partial_sum.h
+libcxx/include/__numeric/reduce.h
+libcxx/include/__numeric/transform_exclusive_scan.h
+libcxx/include/__numeric/transform_inclusive_scan.h
+libcxx/include/__numeric/transform_reduce.h
+libcxx/include/optional
+libcxx/include/ostream
+libcxx/include/queue
+libcxx/include/__random/bernoulli_distribution.h
+libcxx/include/__random/binomial_distribution.h
+libcxx/include/__random/cauchy_distribution.h
+libcxx/include/__random/chi_squared_distribution.h
+libcxx/include/__random/clamp_to_integral.h
+libcxx/include/__random/discard_block_engine.h
+libcxx/include/__random/discrete_distribution.h
+libcxx/include/__random/exponential_distribution.h
+libcxx/include/__random/extreme_value_distribution.h
+libcxx/include/__random/fisher_f_distribution.h
+libcxx/include/__random/gamma_distribution.h
+libcxx/include/__random/generate_canonical.h
+libcxx/include/__random/geometric_distribution.h
+libcxx/include/__random/independent_bits_engine.h
+libcxx/include/__random/is_seed_sequence.h
+libcxx/include/__random/is_valid.h
+libcxx/include/__random/linear_congruential_engine.h
+libcxx/include/__random/log2.h
+libcxx/include/__random/lognormal_distribution.h
+libcxx/include/__random/mersenne_twister_engine.h
+libcxx/include/__random/negative_binomial_distribution.h
+libcxx/include/__random/normal_distribution.h
+libcxx/include/__random/piecewise_constant_distribution.h
+libcxx/include/__random/piecewise_linear_distribution.h
+libcxx/include/__random/poisson_distribution.h
+libcxx/include/__random/random_device.h
+libcxx/include/__random/ranlux.h
+libcxx/include/__random/seed_seq.h
+libcxx/include/__random/shuffle_order_engine.h
+libcxx/include/__random/student_t_distribution.h
+libcxx/include/__random/subtract_with_carry_engine.h
+libcxx/include/__random/uniform_int_distribution.h
+libcxx/include/__random/uniform_random_bit_generator.h
+libcxx/include/__random/uniform_real_distribution.h
+libcxx/include/__random/weibull_distribution.h
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+libcxx/include/__ranges/access.h
+libcxx/include/__ranges/all.h
+libcxx/include/__ranges/common_view.h
+libcxx/include/__ranges/concepts.h
+libcxx/include/__ranges/copyable_box.h
+libcxx/include/__ranges/counted.h
+libcxx/include/__ranges/data.h
+libcxx/include/__ranges/drop_view.h
+libcxx/include/__ranges/empty.h
+libcxx/include/__ranges/empty_view.h
+libcxx/include/__ranges/enable_view.h
+libcxx/include/__ranges/filter_view.h
+libcxx/include/__ranges/iota_view.h
+libcxx/include/__ranges/istream_view.h
+libcxx/include/__ranges/join_view.h
+libcxx/include/__ranges/lazy_split_view.h
+libcxx/include/__ranges/non_propagating_cache.h
+libcxx/include/__ranges/owning_view.h
+libcxx/include/__ranges/range_adaptor.h
+libcxx/include/__ranges/rbegin.h
+libcxx/include/__ranges/ref_view.h
+libcxx/include/__ranges/rend.h
+libcxx/include/__ranges/reverse_view.h
+libcxx/include/__ranges/single_view.h
+libcxx/include/__ranges/size.h
+libcxx/include/__ranges/subrange.h
+libcxx/include/__ranges/take_view.h
+libcxx/include/__ranges/transform_view.h
+libcxx/include/__ranges/view_interface.h
+libcxx/include/__ranges/views.h
+libcxx/include/__ranges/zip_view.h
+libcxx/include/ratio
+libcxx/include/regex
+libcxx/include/scoped_allocator
+libcxx/include/semaphore
+libcxx/include/set
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+libcxx/include/shared_mutex
+libcxx/include/span
+libcxx/include/__split_buffer
+libcxx/include/sstream
+libcxx/include/stack
+libcxx/include/stdatomic.h
+libcxx/include/stdbool.h
+libcxx/include/stddef.h
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+libcxx/include/stdio.h
+libcxx/include/stdlib.h
+libcxx/include/__std_stream
+libcxx/include/streambuf
+libcxx/include/string
+libcxx/include/__string/char_traits.h
+libcxx/include/__string/extern_template_lists.h
+libcxx/include/string.h
+libcxx/include/string_view
+libcxx/include/strstream
+libcxx/include/__support/android/locale_bionic.h
+libcxx/include/__support/fuchsia/xlocale.h
+libcxx/include/__support/ibm/gettod_zos.h
+libcxx/include/__support/ibm/locale_mgmt_zos.h
+libcxx/include/__support/ibm/nanosleep.h
+libcxx/include/__support/ibm/xlocale.h
+libcxx/include/__support/newlib/xlocale.h
+libcxx/include/__support/solaris/xlocale.h
+libcxx/include/__support/win32/locale_win32.h
+libcxx/include/__support/xlocale/__nop_locale_mgmt.h
+libcxx/include/system_error
+libcxx/include/thread
+libcxx/include/__threading_support
+libcxx/include/__thread/poll_with_backoff.h
+libcxx/include/__thread/timed_backoff_policy.h
+libcxx/include/__tree
+libcxx/include/tuple
+libcxx/include/__tuple_dir/apply_cv.h
+libcxx/include/__tuple_dir/make_tuple_types.h
+libcxx/include/__tuple_dir/sfinae_helpers.h
+libcxx/include/__tuple_dir/tuple_element.h
+libcxx/include/__tuple_dir/tuple_indices.h
+libcxx/include/__tuple_dir/tuple_like_ext.h
+libcxx/include/__tuple_dir/tuple_size.h
+libcxx/include/__tuple_dir/tuple_types.h
+libcxx/include/typeindex
+libcxx/include/typeinfo
+libcxx/include/__type_traits/add_const.h
+libcxx/include/__type_traits/add_cv.h
+libcxx/include/__type_traits/add_lvalue_reference.h
+libcxx/include/__type_traits/add_pointer.h
+libcxx/include/__type_traits/add_volatile.h
+libcxx/include/__type_traits/aligned_storage.h
+libcxx/include/__type_traits/aligned_union.h
+libcxx/include/__type_traits/alignment_of.h
+libcxx/include/__type_traits/apply_cv.h
+libcxx/include/__type_traits/can_extract_key.h
+libcxx/include/__type_traits/common_reference.h
+libcxx/include/__type_traits/common_type.h
+libcxx/include/__type_traits/copy_cv.h
+libcxx/include/__type_traits/copy_cvref.h
+libcxx/include/__type_traits/decay.h
+libcxx/include/__type_traits/enable_if.h
+libcxx/include/__type_traits/extent.h
+libcxx/include/__type_traits/has_unique_object_representation.h
+libcxx/include/__type_traits/has_virtual_destructor.h
+libcxx/include/__type_traits/integral_constant.h
+libcxx/include/__type_traits/is_abstract.h
+libcxx/include/__type_traits/is_aggregate.h
+libcxx/include/__type_traits/is_allocator.h
+libcxx/include/__type_traits/is_always_bitcastable.h
+libcxx/include/__type_traits/is_arithmetic.h
+libcxx/include/__type_traits/is_array.h
+libcxx/include/__type_traits/is_assignable.h
+libcxx/include/__type_traits/is_base_of.h
+libcxx/include/__type_traits/is_bounded_array.h
+libcxx/include/__type_traits/is_callable.h
+libcxx/include/__type_traits/is_class.h
+libcxx/include/__type_traits/is_compound.h
+libcxx/include/__type_traits/is_constant_evaluated.h
+libcxx/include/__type_traits/is_const.h
+libcxx/include/__type_traits/is_constructible.h
+libcxx/include/__type_traits/is_convertible.h
+libcxx/include/__type_traits/is_copy_assignable.h
+libcxx/include/__type_traits/is_copy_constructible.h
+libcxx/include/__type_traits/is_core_convertible.h
+libcxx/include/__type_traits/is_default_constructible.h
+libcxx/include/__type_traits/is_destructible.h
+libcxx/include/__type_traits/is_empty.h
+libcxx/include/__type_traits/is_enum.h
+libcxx/include/__type_traits/is_final.h
+libcxx/include/__type_traits/is_floating_point.h
+libcxx/include/__type_traits/is_fundamental.h
+libcxx/include/__type_traits/is_implicitly_default_constructible.h
+libcxx/include/__type_traits/is_integral.h
+libcxx/include/__type_traits/is_literal_type.h
+libcxx/include/__type_traits/is_member_function_pointer.h
+libcxx/include/__type_traits/is_member_object_pointer.h
+libcxx/include/__type_traits/is_member_pointer.h
+libcxx/include/__type_traits/is_move_assignable.h
+libcxx/include/__type_traits/is_move_constructible.h
+libcxx/include/__type_traits/is_nothrow_assignable.h
+libcxx/include/__type_traits/is_nothrow_constructible.h
+libcxx/include/__type_traits/is_nothrow_convertible.h
+libcxx/include/__type_traits/is_nothrow_copy_assignable.h
+libcxx/include/__type_traits/is_nothrow_copy_constructible.h
+libcxx/include/__type_traits/is_nothrow_default_constructible.h
+libcxx/include/__type_traits/is_nothrow_destructible.h
+libcxx/include/__type_traits/is_nothrow_move_assignable.h
+libcxx/include/__type_traits/is_nothrow_move_constructible.h
+libcxx/include/__type_traits/is_null_pointer.h
+libcxx/include/__type_traits/is_object.h
+libcxx/include/__type_traits/is_pod.h
+libcxx/include/__type_traits/is_pointer.h
+libcxx/include/__type_traits/is_polymorphic.h
+libcxx/include/__type_traits/is_primary_template.h
+libcxx/include/__type_traits/is_reference.h
+libcxx/include/__type_traits/is_reference_wrapper.h
+libcxx/include/__type_traits/is_same.h
+libcxx/include/__type_traits/is_scalar.h
+libcxx/include/__type_traits/is_scoped_enum.h
+libcxx/include/__type_traits/is_signed.h
+libcxx/include/__type_traits/is_signed_integer.h
+libcxx/include/__type_traits/is_standard_layout.h
+libcxx/include/__type_traits/is_swappable.h
+libcxx/include/__type_traits/is_trivial.h
+libcxx/include/__type_traits/is_trivially_assignable.h
+libcxx/include/__type_traits/is_trivially_constructible.h
+libcxx/include/__type_traits/is_trivially_copyable.h
+libcxx/include/__type_traits/is_trivially_copy_assignable.h
+libcxx/include/__type_traits/is_trivially_copy_constructible.h
+libcxx/include/__type_traits/is_trivially_default_constructible.h
+libcxx/include/__type_traits/is_trivially_destructible.h
+libcxx/include/__type_traits/is_unbounded_array.h
+libcxx/include/__type_traits/is_union.h
+libcxx/include/__type_traits/is_unsigned.h
+libcxx/include/__type_traits/is_unsigned_integer.h
+libcxx/include/__type_traits/is_valid_expansion.h
+libcxx/include/__type_traits/is_void.h
+libcxx/include/__type_traits/is_volatile.h
+libcxx/include/__type_traits/lazy.h
+libcxx/include/__type_traits/make_32_64_or_128_bit.h
+libcxx/include/__type_traits/make_const_lvalue_ref.h
+libcxx/include/__type_traits/make_signed.h
+libcxx/include/__type_traits/make_unsigned.h
+libcxx/include/__type_traits/maybe_const.h
+libcxx/include/__type_traits/nat.h
+libcxx/include/__type_traits/negation.h
+libcxx/include/__type_traits/noexcept_move_assign_container.h
+libcxx/include/__type_traits/promote.h
+libcxx/include/__type_traits/rank.h
+libcxx/include/__type_traits/remove_all_extents.h
+libcxx/include/__type_traits/remove_const.h
+libcxx/include/__type_traits/remove_cv.h
+libcxx/include/__type_traits/remove_cvref.h
+libcxx/include/__type_traits/remove_extent.h
+libcxx/include/__type_traits/remove_pointer.h
+libcxx/include/__type_traits/remove_reference.h
+libcxx/include/__type_traits/remove_volatile.h
+libcxx/include/__type_traits/result_of.h
+libcxx/include/__type_traits/strip_signature.h
+libcxx/include/__type_traits/type_identity.h
+libcxx/include/__type_traits/type_list.h
+libcxx/include/__type_traits/underlying_type.h
+libcxx/include/__type_traits/void_t.h
+libcxx/include/uchar.h
+libcxx/include/unordered_map
+libcxx/include/unordered_set
+libcxx/include/__utility/as_const.h
+libcxx/include/__utility/cmp.h
+libcxx/include/__utility/convert_to_integral.h
+libcxx/include/__utility/exchange.h
+libcxx/include/__utility/in_place.h
+libcxx/include/__utility/integer_sequence.h
+libcxx/include/__utility/pair.h
+libcxx/include/__utility/piecewise_construct.h
+libcxx/include/__utility/priority_tag.h
+libcxx/include/__utility/rel_ops.h
+libcxx/include/__utility/to_underlying.h
+libcxx/include/__utility/unreachable.h
+libcxx/include/valarray
+libcxx/include/variant
+libcxx/include/__variant/monostate.h
+libcxx/include/vector
+libcxx/include/__verbose_abort
+libcxx/include/wchar.h
+libcxx/include/wctype.h
+libcxx/src/CMakeLists.txt
+libcxx/src/any.cpp
+libcxx/src/atomic.cpp
+libcxx/src/barrier.cpp
+libcxx/src/bind.cpp
+libcxx/src/charconv.cpp
+libcxx/src/chrono.cpp
+libcxx/src/condition_variable.cpp
+libcxx/src/condition_variable_destructor.cpp
+libcxx/src/debug.cpp
+libcxx/src/exception.cpp
+libcxx/src/experimental/memory_resource.cpp
+libcxx/src/filesystem/directory_iterator.cpp
+libcxx/src/filesystem/filesystem_common.h
+libcxx/src/filesystem/int128_builtins.cpp
+libcxx/src/filesystem/operations.cpp
+libcxx/src/filesystem/posix_compat.h
+libcxx/src/functional.cpp
+libcxx/src/future.cpp
+libcxx/src/hash.cpp
+libcxx/src/include/apple_availability.h
+libcxx/src/include/atomic_support.h
+libcxx/src/include/config_elast.h
+libcxx/src/include/refstring.h
+libcxx/src/include/ryu/ryu.h
+libcxx/src/include/sso_allocator.h
+libcxx/src/ios.cpp
+libcxx/src/iostream.cpp
+libcxx/src/legacy_debug_handler.cpp
+libcxx/src/locale.cpp
+libcxx/src/memory.cpp
+libcxx/src/mutex.cpp
+libcxx/src/mutex_destructor.cpp
+libcxx/src/new.cpp
+libcxx/src/optional.cpp
+libcxx/src/random.cpp
+libcxx/src/random_shuffle.cpp
+libcxx/src/regex.cpp
+libcxx/src/shared_mutex.cpp
+libcxx/src/stdexcept.cpp
+libcxx/src/string.cpp
+libcxx/src/strstream.cpp
+libcxx/src/support/ibm/mbsnrtowcs.cpp
+libcxx/src/support/ibm/wcsnrtombs.cpp
+libcxx/src/support/ibm/xlocale_zos.cpp
+libcxx/src/support/runtime/exception_fallback.ipp
+libcxx/src/support/runtime/exception_glibcxx.ipp
+libcxx/src/support/runtime/exception_libcxxabi.ipp
+libcxx/src/support/runtime/exception_libcxxrt.ipp
+libcxx/src/support/runtime/exception_msvc.ipp
+libcxx/src/support/runtime/exception_pointer_cxxabi.ipp
+libcxx/src/support/runtime/exception_pointer_glibcxx.ipp
+libcxx/src/support/runtime/exception_pointer_msvc.ipp
+libcxx/src/support/runtime/exception_pointer_unimplemented.ipp
+libcxx/src/support/runtime/new_handler_fallback.ipp
+libcxx/src/support/runtime/stdexcept_default.ipp
+libcxx/src/support/runtime/stdexcept_vcruntime.ipp
+libcxx/src/support/solaris/mbsnrtowcs.inc
+libcxx/src/support/solaris/wcsnrtombs.inc
+libcxx/src/support/solaris/xlocale.cpp
+libcxx/src/support/win32/locale_win32.cpp
+libcxx/src/support/win32/support.cpp
+libcxx/src/support/win32/thread_win32.cpp
+libcxx/src/system_error.cpp
+libcxx/src/thread.cpp
+libcxx/src/typeinfo.cpp
+libcxx/src/valarray.cpp
+libcxx/src/variant.cpp
+libcxx/src/vector.cpp
+libcxx/src/verbose_abort.cpp

diff  --git a/libcxx/utils/generate_ignore_format.sh b/libcxx/utils/generate_ignore_format.sh
new file mode 100755
index 0000000000000..7df8245df64a7
--- /dev/null
+++ b/libcxx/utils/generate_ignore_format.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Generate a list of headers that aren't formatted yet
+
+if [ -z "${CLANG_FORMAT}" ]; then
+  CLANG_FORMAT=clang-format
+fi
+
+rm libcxx/utils/data/ignore_format.txt
+for file in $(find libcxx/{benchmarks,include,src}/ -type f); do
+  ${CLANG_FORMAT} --Werror --dry-run ${file} >& /dev/null
+  if [ $? != 0 ]; then
+    echo ${file} >> libcxx/utils/data/ignore_format.txt
+  fi
+done
+
+sort libcxx/utils/data/ignore_format.txt -d -o libcxx/utils/data/ignore_format.txt

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