[libc++] Improve the format ignorelist generation.

[Mordante]

Summary

Several improvements

• Only add files that we actually want to format.
• Sort according to a fixed locale.

Some drive-by fixes

• Rename a text file, this avoids a filter exception.
• Adds a some missing source files extensions.
• Removes unused extensions hh, hxx, cc, and cxx from clang-format.

[Mordante]

Remove testing part and minor improvements.

[philnik]

LGTM % comment. Thanks for improving the script.

libcxx/utils/generate_ignore_format.sh

16

AFAIK we don't have most of these file endings. IMO we shouldn't list them here (and remove them from check-format).

[Mordante]

Thanks for the review.

libcxx/utils/generate_ignore_format.sh

16

*.c is unused, but I'm want to keep it.
*.hh, *.hxx, *.cc, and *.cxx are unused and these I'll remove.

[philnik]

libcxx/utils/generate_ignore_format.sh

16

Sounds good.

libcxx/src/support/solaris/README.txt

 This directory contains a partial implementation of the xlocale APIs for
 Solaris.  Some portions are lifted from FreeBSD libc, and so are covered by a
 2-clause BSD license instead of the MIT/UUIC license that the rest of libc++ is
 distributed under.

libcxx/utils/ci/buildkite-pipeline.yml

 # version number. The Linux CI runners for GCC use the latest stable version.
 # Theses numbers are available in all runners, making it easier to update the
 # version number.
 env:
     LLVM_STABLE_VERSION: "16"
     LLVM_HEAD_VERSION: "17"
     GCC_STABLE_VERSION: "12"
 steps:
-  #
-  # Light pre-commit tests for things like formatting or when people forget
-  # to update generated files.
-  #
-  - label: "Format"
-    command: "libcxx/utils/ci/run-buildbot check-format"
-    artifact_paths:
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-    env:
-        GIT_CLANG_FORMAT: "/usr/bin/git-clang-format-${LLVM_STABLE_VERSION} --binary clang-format-${LLVM_STABLE_VERSION}"
-        CC: "clang-${LLVM_HEAD_VERSION}"
-        CXX: "clang++-${LLVM_HEAD_VERSION}"
-    agents:
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-      os: "linux"
-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
-          limit: 2
-    timeout_in_minutes: 120
-
   - label: "Generated output"
     command: "libcxx/utils/ci/run-buildbot check-generated-output"
     artifact_paths:
       - "**/generated_output.patch"
       - "**/generated_output.status"
     env:
         CC: "clang-${LLVM_HEAD_VERSION}"
         CXX: "clang++-${LLVM_HEAD_VERSION}"
         # TODO ENABLE
         # CLANG_FORMAT: "/usr/bin/clang-format-${LLVM_STABLE_VERSION}"
         CLANG_FORMAT: "clang-format-15"
     agents:
       queue: "libcxx-builders"
       os: "linux"
     retry:
       automatic:
         - exit_status: -1  # Agent was lost
           limit: 2
     timeout_in_minutes: 120
 
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-        - exit_status: -1  # Agent was lost
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-
-  #
-  # General testing with the default configuration, under all the supported
-  # Standard modes, with Clang and GCC. This catches most issues upfront.
-  # The goal of this step is to catch most issues while being very fast.
-  #
-  - wait
-
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-
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-
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-
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-      os: "linux"
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-      automatic:
-        - exit_status: -1  # Agent was lost
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-
-  - label: "C++03"
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-      - "**/*.abilist"
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-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
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-    timeout_in_minutes: 120
-
-  #
-  # All other supported configurations of libc++.
-  #
-  - wait
-
-  - label: "C++20"
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-      - "**/test-results.xml"
-      - "**/*.abilist"
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-        ENABLE_CLANG_TIDY: "On"
-    agents:
-      queue: "libcxx-builders"
-      os: "linux"
-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
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-    timeout_in_minutes: 120
-
-  - label: "C++17"
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-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
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-    timeout_in_minutes: 120
-
-  - label: "C++14"
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-      - "**/test-results.xml"
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-      os: "linux"
-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
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-    timeout_in_minutes: 120
-
-  # Tests with the supported compilers.
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-      automatic:
-        - exit_status: -1  # Agent was lost
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-    timeout_in_minutes: 120
-
-  - label: "Clang 15"
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-    artifact_paths:
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-      - "**/*.abilist"
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-    agents:
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-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
-          limit: 2
-    timeout_in_minutes: 120
-
-  - label: "Clang 16"
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-      - "**/test-results.xml"
-      - "**/*.abilist"
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-    agents:
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-      os: "linux"
-    retry:
-      automatic:
-        - exit_status: -1  # Agent was lost
-          limit: 2
-    timeout_in_minutes: 120
-
-  # Tests with the sanitizers.
-  - group: "Sanitizers"
-    steps:
-    - label: "ASAN"
-      command: "libcxx/utils/ci/run-buildbot generic-asan"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      env:
-          CC: "clang-${LLVM_HEAD_VERSION}"
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-        queue: "libcxx-builders"
-        os: "linux"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
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-      timeout_in_minutes: 120
-
-    - label: "TSAN"
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-        - "**/test-results.xml"
-        - "**/*.abilist"
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-        automatic:
-          - exit_status: -1  # Agent was lost
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-      timeout_in_minutes: 120
-
-    - label: "UBSAN"
-      command: "libcxx/utils/ci/run-buildbot generic-ubsan"
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-        - "**/test-results.xml"
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-        automatic:
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-
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-      retry:
-        automatic:
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-
-  # Tests with the various supported ways to build libc++.
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-
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-      command: "bash libcxx/utils/ci/run-buildbot clang-cl-no-vcruntime"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "windows"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-
-    - label: "MinGW (DLL, x86_64)"
-      command: "bash libcxx/utils/ci/run-buildbot mingw-dll"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "windows"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "MinGW (Static, x86_64)"
-      command: "bash libcxx/utils/ci/run-buildbot mingw-static"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "windows"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "MinGW (DLL, i686)"
-      command: "bash libcxx/utils/ci/run-buildbot mingw-dll-i686"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "windows"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-  - group: ":apple: Apple"
-    steps:
-    - label: "MacOS x86_64"
-      command: "libcxx/utils/ci/run-buildbot apple-cxx20"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "x86_64"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "MacOS arm64"
-      command: "libcxx/utils/ci/run-buildbot apple-cxx20"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "arm64"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    # Build with the configuration we use to generate libc++.dylib on Apple platforms
-    - label: "Apple system"
-      command: "libcxx/utils/ci/run-buildbot apple-system"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "arm64" # This can technically run on any architecture, but we have more resources on arm64 so we pin this job to arm64
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    # Test back-deployment to older Apple platforms
-    - label: "Apple back-deployment macosx10.9"
-      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.9"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "x86_64" # We need to use x86_64 for back-deployment CI on this target since macOS didn't support arm64 back then.
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Apple back-deployment macosx10.15"
-      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-10.15"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "x86_64" # We need to use x86_64 for back-deployment CI on this target since macOS didn't support arm64 back then.
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Apple back-deployment macosx11.0 arm64"
-      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-11.0"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-        arch: "arm64"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Apple back-deployment with assertions enabled"
-      command: "libcxx/utils/ci/run-buildbot apple-system-backdeployment-assertions-11.0"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders"
-        os: "macos"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-  - group: "ARM"
-    steps:
-    - label: "AArch64"
-      command: "libcxx/utils/ci/run-buildbot aarch64"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "aarch64"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "AArch64 -fno-exceptions"
-      command: "libcxx/utils/ci/run-buildbot aarch64-noexceptions"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "aarch64"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Armv8"
-      command: "libcxx/utils/ci/run-buildbot armv8"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "armv8l"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Armv8 -fno-exceptions"
-      command: "libcxx/utils/ci/run-buildbot armv8-noexceptions"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "armv8l"
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Armv7"
-      command: "libcxx/utils/ci/run-buildbot armv7"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "armv8l" # Compiling for v7, running on v8 hardware
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "Armv7 -fno-exceptions"
-      command: "libcxx/utils/ci/run-buildbot armv7-noexceptions"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      agents:
-        queue: "libcxx-builders-linaro-arm"
-        arch: "armv8l" # Compiling for v7, running on v8 hardware
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-  - group: "AIX"
-    steps:
-    - label: "AIX (32-bit)"
-      command: "libcxx/utils/ci/run-buildbot aix"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      env:
-          CC: "clang"
-          CXX: "clang++"
-          OBJECT_MODE: "32"
-      agents:
-          queue: libcxx-builders
-          os: aix
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120
-
-    - label: "AIX (64-bit)"
-      command: "libcxx/utils/ci/run-buildbot aix"
-      artifact_paths:
-        - "**/test-results.xml"
-        - "**/*.abilist"
-      env:
-          CC: "clang"
-          CXX: "clang++"
-          OBJECT_MODE: "64"
-      agents:
-          queue: libcxx-builders
-          os: aix
-      retry:
-        automatic:
-          - exit_status: -1  # Agent was lost
-            limit: 2
-      timeout_in_minutes: 120

libcxx/utils/ci/run-buildbot

check-format)
     echo "+++ Checking formatting"
     # We need to set --extensions so that clang-format checks extensionless files.
     mkdir -p ${BUILD_DIR}
     if [ -z "${GIT_CLANG_FORMAT}" ]; then
        GIT_CLANG_FORMAT=git-clang-format
     fi
     ${GIT_CLANG_FORMAT} \
         --diff \
-        --extensions ',h,hh,hpp,hxx,c,cc,cxx,cpp' HEAD~1 \
+        --extensions ',h,hh,hpp,hxx,c,cc,cxx,cpp,inc,ipp' HEAD~1 \
         -- $(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
 ;;
 check-generated-output)
     # `! foo` doesn't work properly with `set -e`, use `! foo || false` instead.
     # https://stackoverflow.com/questions/57681955/set-e-does-not-respect-logical-not

libcxx/utils/generate_ignore_format.sh

 #!/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
+# This uses the same matches as the check-format CI step.
+for file in $(find libcxx/{benchmarks,include,src}/ -type f -not -name '*.*' -or \( \
+   -name "*.h" -or -name "*.hh" -or -name "*.hpp" -or -name "*.hxx" -or \
+   -name "*.c" -or -name "*.cc" -or -name "*.cpp" -or -name "*.cxx" -or \
+   -name "*.inc" -or -name "*.ipp" \
+   \) ); 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
+# Force sorting not to depend on the system's locale.
+LC_ALL=C sort libcxx/utils/data/ignore_format.txt -d -o libcxx/utils/data/ignore_format.txt