Linux WIP

[jberkel]

No description provided.

[jberkel]

Most tests pass on Linux now except code calling Connection.createFunction(), which crashes in

if functions[function] == nil { self.functions[function] = [:] }

* thread #1: tid = 7842, 0x00007ffff7d0e3ee libswiftCore.so, name = 'SQLitePackageTe', stop reason = signal SIGTRAP
  * frame #0: 0x00007ffff7d0e3ee libswiftCore.so
    frame #1: 0x00007ffff7b817be libswiftCore.so`Swift._NativeDictionaryStorage.init (capacity : Swift.Int) -> Swift._NativeDictionaryStorage<A, B> + 62
    frame #2: 0x00007ffff7b756fa libswiftCore.so`Swift.Dictionary.init () -> Swift.Dictionary<A, B> + 122
    frame #3: 0x00000000005d2743 SQLitePackageTests.xctest`Connection.createFunction(function="hello", argumentCount=nil, deterministic=false, block=0x000000000049faa0 SQLitePackageTests.xctest`SQLiteTests.ConnectionTests.(test_createFunction_withArrayArguments () -> ()).(closure #1) at ConnectionTests.swift:305, self=0x00000000006ee9f0) -> Binding?) -> () + 1571 at Connection.swift:597
    frame #4: 0x000000000049f89a SQLitePackageTests.xctest`ConnectionTests.test_createFunction_withArrayArguments(self=0x00000000006ee820) -> () + 170 at ConnectionTests.swift:305

lldb) d
->  0x7ffff7d0e3ee:      nop
libswiftCore.so`swift_slowDealloc:
    0x7ffff7d0e3f0 <+0>: jmp    0x7ffff7b085b0            ; symbol stub for: free
    0x7ffff7d0e3f5:      nopl   (%rax)
    0x7ffff7d0e3f8:      nopl   (%rax,%rax)
libswiftCore.so`swift_allocObject:
    0x7ffff7d0e400 <+0>: movq   0xb17c1(%rip), %rax       ; _swift_allocObject
    0x7ffff7d0e407 <+7>: jmpq   *%rax

[jberkel]

Looks like an incompatibility with the blocks runtime, the following snippet crashes on Linux but not on OSX:

typealias Function = @convention(block) (OpaquePointer) -> Void
var functions = [Int: Function]()
functions[0] = { _ in }

$ swiftc test.swift -lBlocksRuntime && ./test
Segmentation fault (core dumped)

@zmeyc any ideas?

[jberkel]

Newer version of Swift now embeds blocks runtime, but still fails:

typealias Function = @convention(block) (OpaquePointer) -> Void
var functions = [Int: Function]()
functions[0] = { _ in }

$ swiftc --version
Swift version 3.1 (swift-3.1-RELEASE)
Target: x86_64-unknown-linux-gnu
$ swiftc test.swift -ldispatch && ./test
Segmentation fault (core dumped)

SR-4429

[jberkel]

bc00519