[swift-corelibs-dev] Encountering "Constant strings cannot be deallocated"

[Alex Blewitt]

Thanks!

Alex

> On 17 Nov 2017, at 17:27, Brandon Williams <mbw234 at gmail.com> wrote:
> 
> I haven’t been able to find a minimal test case, but at least the test case I linked to reproduces every time.
> 
> I’m not sure I’ll have time to search for a minimal case today, and I leave for vacation tomorrow :/ perhaps when I get back.
> 
> I did at least file the bug report: https://bugs.swift.org/browse/SR-6422 <https://bugs.swift.org/browse/SR-6422>
> On Fri, Nov 17, 2017 at 4:48 AM Alex Blewitt <alblue at apple.com <mailto:alblue at apple.com>> wrote:
> Can you file a bug at bugs.swift.org <http://bugs.swift.org/> with a minimal test case? It certainly sounds like a bug, and from the looks of the docker files, you're using the swift 4.0.2 release on Ubuntu 16.04.
> 
> If you can run the test under LLDB and put a breakpoint in that function, and get a backtrace (with 'bt') then it might be interesting to see where the deinit is being triggered, and give some kind of clue as to what is happening.
> 
> Alex
> 
> 
>> On 16 Nov 2017, at 22:46, Brandon Williams via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
>> 
>> Oops, sorry, hit send too early!
>> 
>> The docker file Im using can be seen here:
>> 
>> https://github.com/pointfreeco/swift-web/blob/bb-travis/Dockerfile <https://github.com/pointfreeco/swift-web/blob/bb-travis/Dockerfile>
>> 
>> Which is this template:
>> 
>> https://github.com/swiftdocker/docker-swift/blob/5c83628d4696bca62aec3136a4ee9b854e8d548e/4.0/Dockerfile <https://github.com/swiftdocker/docker-swift/blob/5c83628d4696bca62aec3136a4ee9b854e8d548e/4.0/Dockerfile>
>> 
>> So not using any of the betas...
>> 
>> On Thu, Nov 16, 2017 at 5:45 PM Brandon Williams <mbw234 at gmail.com <mailto:mbw234 at gmail.com>> wrote:
>> Ah, sorry for now providing more info!
>> 
>> So the docker file that I am using to run the tests can be see here:
>> 
>> 
>> 
>> On Thu, Nov 16, 2017 at 5:43 PM Philippe Hausler <phausler at apple.com <mailto:phausler at apple.com>> wrote:
>> Is this with a recent build? Do you know what commit the swift-corelibs-foundation is from? That might help nail down what is going on here.
>> 
>> 
>>> On Nov 16, 2017, at 2:41 PM, Brandon Williams via swift-corelibs-dev <swift-corelibs-dev at swift.org <mailto:swift-corelibs-dev at swift.org>> wrote:
>>> 
>> 
>>> Hello! I have a test case that when run on Linux somehow encounters the "Constant strings cannot be deallocated” fatal error thrown in NSCFString.swift, as seen here:
>>> 
>>> https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/NSCFString.swift#L118 <https://github.com/apple/swift-corelibs-foundation/blob/master/Foundation/NSCFString.swift#L118>
>>> 
>>> The test that does it is here:
>>> 
>>> https://github.com/pointfreeco/swift-web/blob/5f19a0264be5d369ee0438da8599e3c478a6573b/Tests/ApplicativeRouterTests/SyntaxRouterTests.swift#L88-L93 <https://github.com/pointfreeco/swift-web/blob/5f19a0264be5d369ee0438da8599e3c478a6573b/Tests/ApplicativeRouterTests/SyntaxRouterTests.swift#L88-L93>
>>> 
>>> Now there’s a lot to unravel here and I haven’t been able to quite isolate it, but I thought perhaps someone here might know how that could path could even be executed.
>>> 
>>> Thanks for any help!
>> 
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