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Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Successful build of libpng, reference main (224658), with Swift 6.0 (beta) for macOS (SPM) on 16 Sep 2024 12:39:20 UTC.

Swift 6 data race errors: 0

Build Command

env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete

Build Log

========================================
RunAll
========================================
Builder version: 4.53.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/AdaEngine/libpng.git
Reference: main
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/AdaEngine/libpng
 * branch            main       -> FETCH_HEAD
 * [new branch]      main       -> origin/main
HEAD is now at 2246583 Fix visibility
Cloned https://github.com/AdaEngine/libpng.git
Revision (git rev-parse @):
22465834d2d062f9d8ab5b7fcb5955df6d678c2b
SUCCESS checkout https://github.com/AdaEngine/libpng.git at main
========================================
Build
========================================
Selected platform:         macosSpm
Swift version:             6.0
Building package at path:  $PWD
https://github.com/AdaEngine/libpng.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-16.0.0-Release.Candidate.app xcrun swift build --arch arm64 -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete
Building for debugging...
[0/19] Compiling filter_neon.S
[1/19] Compiling libpng pngmem.c
[2/19] Compiling arm_init.c
[2/19] Compiling libpng pngerror.c
[4/19] Compiling libpng pngget.c
/Users/admin/builder/spi-builder-workspace/Sources/libpng/pngwutil.c:520:32: warning: assigning to 'Bytef *' (aka 'unsigned char *') from 'png_const_bytep' (aka 'const unsigned char *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
  520 |       png_ptr->zstream.next_in = PNGZ_INPUT_CAST(comp->input);
      |                                ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/admin/builder/spi-builder-workspace/Sources/libpng/pngwutil.c:966:29: warning: assigning to 'Bytef *' (aka 'unsigned char *') from 'png_const_bytep' (aka 'const unsigned char *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
  966 |    png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
      |                             ^ ~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.
[5/19] Compiling libpng pngwutil.c
[6/19] Compiling libpng png.c
[7/19] Compiling libpng pngread.c
[8/19] Compiling libpng pngrio.c
[9/19] Compiling libpng pngwtran.c
[9/19] Compiling libpng pngwio.c
[11/19] Compiling libpng pngtrans.c
[12/19] Compiling libpng pngwrite.c
[13/19] Compiling libpng pngset.c
[14/19] Compiling libpng pngpread.c
[15/19] Compiling palette_neon_intrinsics.c
[16/19] Compiling filter_neon_intrinsics.c
/Users/admin/builder/spi-builder-workspace/Sources/libpng/pngrutil.c:503:32: warning: assigning to 'Bytef *' (aka 'unsigned char *') from 'png_const_bytep' (aka 'const unsigned char *') discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
  503 |       png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
      |                                ^ ~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
[17/19] Compiling libpng pngrutil.c
[18/19] Compiling libpng pngrtran.c
Build complete! (1.05s)
Build complete.
{
  "dependencies" : [
  ],
  "manifest_display_name" : "libpng",
  "name" : "libpng",
  "path" : "/Users/admin/builder/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "libpng",
      "targets" : [
        "libpng"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "libpngTests",
      "module_type" : "SwiftTarget",
      "name" : "libpngTests",
      "path" : "Tests/libpngTests",
      "sources" : [
        "libpngTests.swift"
      ],
      "target_dependencies" : [
        "libpng"
      ],
      "type" : "test"
    },
    {
      "c99name" : "libpng",
      "module_type" : "ClangTarget",
      "name" : "libpng",
      "path" : "Sources/libpng",
      "product_memberships" : [
        "libpng"
      ],
      "sources" : [
        "arm/arm_init.c",
        "arm/filter_neon.S",
        "arm/filter_neon_intrinsics.c",
        "arm/palette_neon_intrinsics.c",
        "png.c",
        "pngerror.c",
        "pngget.c",
        "pngmem.c",
        "pngpread.c",
        "pngread.c",
        "pngrio.c",
        "pngrtran.c",
        "pngrutil.c",
        "pngset.c",
        "pngtrans.c",
        "pngwio.c",
        "pngwrite.c",
        "pngwtran.c",
        "pngwutil.c"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "5.7"
}
Done.