Based on the backtrace, I think the code is running into a memory issue with
Swift Foundation:
https://bugs.swift.org/browse/SR-2485
https://bugs.swift.org/browse/SR-2462
I haven’t seen this in a while - are you able to try running on Swift 3.1 or
3.0.2?
Your code seems to work on the IBM Sandbox with 3.0.2 but not 3.0.1.
You could also try replacing every 'let’ with ‘var’ but that might not be the
right solution :-)
Regards,
Will Stanton
> On Jan 25, 2017, at 5:04 PM, Dennis Schafroth via swift-users
> <swift-us...@swift.org> wrote:
>
> Hi
>
> Trying to do some simple date parsing from syslog format (“Jan 25 20:21:22”)
> into Date. Seem to work once but crashes on second call
>
>
> func dateConv(_ dateString: String) -> Date? {
> let dateFormatter = DateFormatter()
> dateFormatter.dateFormat = "MMM dd HH:mm"
> dateFormatter.locale = Locale(identifier: "da_DK_POSIX")
> if let date = dateFormatter.date(from: dateString) {
> print("Real date: \(date)" )
> return date
> }
> return nil
> }
>
> var date = dateConv("Jan 25 20:10")
> var date2 = dateConv("Jan 25 20:11”)
>
> # swift main.swift
> Real date: 2000-01-25 19:10:00 +0000
> 0 swift 0x000000000334ab78
> llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 40
> 1 swift 0x0000000003349346 llvm::sys::RunSignalHandlers() + 54
> 2 swift 0x000000000334b6aa
> 3 libpthread.so.0 0x00007fec92166890
> 4 libswiftCore.so 0x00007fec8e8f0735
> 5 libFoundation.so 0x00007fec8c0ab6ee
> 6 libFoundation.so 0x00007fec8bd7a222
> 7 libFoundation.so 0x00007fec8bd7c623
> 8 libFoundation.so 0x00007fec8bf0e873
> _TFC10Foundation6NSDateg11descriptionSS + 99
> 9 libFoundation.so 0x00007fec8c182829
> _TTWV10Foundation4Dates23CustomStringConvertibleS_FS1_g11descriptionSS + 57
> 10 libswiftCore.so 0x00007fec8e78c745
> _TFs15_print_unlockedu0_R_s16TextOutputStreamrFTxRq__T_ + 997
>
> using swift 3.0.1. Am I doing something wrong? I seems to work on macOS.
>
> cheers,
> :-Dennis
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