Swift Package Index

Build Information

Failed to build SwiftSlash, reference 6.0.0 (5dda27), with Swift 6.2 for macOS (SPM) on 18 Oct 2026 08:17:31 UTC.

Build Command

env DEVELOPER_DIR=/Applications/Xcode-26.3.0.app xcrun swift build --arch arm64

Build Log

========================================
RunAll
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Builder version: 5.1.3
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/tannerdsilva/SwiftSlash.git
Reference: 6.0.0
Initialized empty Git repository in /Users/admin/builder/spi-builder-workspace/.git/
From https://github.com/tannerdsilva/SwiftSlash
 * tag               6.0.0      -> FETCH_HEAD
HEAD is now at 5dda27d feat: process-group placement as part of the launch contract (6.0.0)
Cloned https://github.com/tannerdsilva/SwiftSlash.git
Revision (git rev-parse @):
5dda27d1ebae38ce42e9440f3580cbc778c8af8b
SUCCESS checkout https://github.com/tannerdsilva/SwiftSlash.git at 6.0.0
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Build
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Selected platform:         macosSpm
Swift version:             6.2
Building package at path:  $PWD
https://github.com/tannerdsilva/SwiftSlash.git
Running build ...
env DEVELOPER_DIR=/Applications/Xcode-26.3.0.app xcrun swift build --arch arm64
Building for debugging...
[0/19] Write sources
[8/19] Write SwiftSlashTestSpawner-entitlement.plist
[8/19] Write sources
[11/19] Write swift-version--3CB7CFEC50E0D141.txt
[12/21] Compiling __cswiftslash_types __cswiftslash_types.c
[13/21] Compiling __cswiftslash_threads __cswiftslash_threads.c
[14/21] Compiling __cswiftslash_posix_helpers __cswiftslash_posix_helpers.c
[15/26] Compiling __cswiftslash_eventtrigger __cswiftslash_eventtrigger.c
[17/26] Compiling SwiftSlashFHHelpers FileHandleError.swift
[18/26] Compiling SwiftSlashFHHelpers SystemErrno.swift
[19/26] Compiling SwiftSlashFHHelpers PosixPipe.swift
[20/26] Compiling SwiftSlashFHHelpers FHHelpers.swift
[21/26] Emitting module SwiftSlashFHHelpers
[22/26] Compiling SwiftSlashOneShotLatch OneShotLatch.swift
[23/26] Emitting module SwiftSlashOneShotLatch
[24/32] Compiling SwiftSlashFIFO FIFOIterators.swift
[25/32] Compiling SwiftSlashFIFO FIFO.swift
[26/32] Emitting module SwiftSlashFIFO
[27/32] Compiling SwiftSlashFIFO FIFOCore.swift
[28/32] Compiling SwiftSlashFuture Future.swift
[29/32] Emitting module SwiftSlashFuture
[30/37] Compiling SwiftSlashPThread PThreadErrors.swift
[31/37] Compiling SwiftSlashPThread Workspace.swift
[32/37] Compiling SwiftSlashPThread GenericPThread.swift
error: emit-module command failed with exit code 1 (use -v to see invocation)
[33/37] Emitting module SwiftSlashPThread
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:310:2: error: unknown attribute 'c'
308 | // below are the four "pillar functions" that allow for seamless and tightly integrated pthread tasks.
309 | /// allocator function. responsible for initializing the workspace and transferring the crucial memory from the Setup.
310 | @c fileprivate func _run_alloc(_ csPtr:__cswiftslash_ptr_t) -> __cswiftslash_ptr_t {
    |  `- error: unknown attribute 'c'
311 | 	let ws = UnsafeMutablePointer<Workspace>.allocate(capacity:1)
312 | 	ws.initialize(to:Workspace(csPtr.assumingMemoryBound(to:Setup.self).pointee))
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:316:2: error: unknown attribute 'c'
314 | }
315 | /// deallocator function. responsible for being as intentional as possible in capturing the current workspace and releasing the reference of it before it returns.
316 | @c fileprivate func _run_dealloc(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
317 | 	wsPtr.assumingMemoryBound(to:Workspace.self).deinitialize(count:1).deallocate()
318 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:320:2: error: unknown attribute 'c'
318 | }
319 | /// cancel function. responsible for setting the cancellation flag on the contained workspace.
320 | @c fileprivate func _run_cancel(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
321 | 	wsPtr.assumingMemoryBound(to:Workspace.self).pointee.setCancellation()
322 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:324:2: error: unknown attribute 'c'
322 | }
323 | /// main function. responsible for running the work function and setting the result into the return future.
324 | @c fileprivate func _run_main(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
325 | 	// capture the contained workspace (nonretained because of pthread cancellation) so that we can interact with it safely for the work.
326 | 	wsPtr.assumingMemoryBound(to:Workspace.self).pointee.work()
[34/37] Compiling SwiftSlashPThread PThread.swift
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:310:2: error: unknown attribute 'c'
308 | // below are the four "pillar functions" that allow for seamless and tightly integrated pthread tasks.
309 | /// allocator function. responsible for initializing the workspace and transferring the crucial memory from the Setup.
310 | @c fileprivate func _run_alloc(_ csPtr:__cswiftslash_ptr_t) -> __cswiftslash_ptr_t {
    |  `- error: unknown attribute 'c'
311 | 	let ws = UnsafeMutablePointer<Workspace>.allocate(capacity:1)
312 | 	ws.initialize(to:Workspace(csPtr.assumingMemoryBound(to:Setup.self).pointee))
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:316:2: error: unknown attribute 'c'
314 | }
315 | /// deallocator function. responsible for being as intentional as possible in capturing the current workspace and releasing the reference of it before it returns.
316 | @c fileprivate func _run_dealloc(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
317 | 	wsPtr.assumingMemoryBound(to:Workspace.self).deinitialize(count:1).deallocate()
318 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:320:2: error: unknown attribute 'c'
318 | }
319 | /// cancel function. responsible for setting the cancellation flag on the contained workspace.
320 | @c fileprivate func _run_cancel(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
321 | 	wsPtr.assumingMemoryBound(to:Workspace.self).pointee.setCancellation()
322 | }
/Users/admin/builder/spi-builder-workspace/Sources/SwiftSlashPThread/PThread.swift:324:2: error: unknown attribute 'c'
322 | }
323 | /// main function. responsible for running the work function and setting the result into the return future.
324 | @c fileprivate func _run_main(_ wsPtr:__cswiftslash_ptr_t) -> Void {
    |  `- error: unknown attribute 'c'
325 | 	// capture the contained workspace (nonretained because of pthread cancellation) so that we can interact with it safely for the work.
326 | 	wsPtr.assumingMemoryBound(to:Workspace.self).pointee.work()
BUILD FAILURE 6.2 macosSpm