[SR-2476] Swift process crashes when printing out error #45081

swift-ci · 2016-08-25T14:42:48Z


Previous ID	SR-2476
Radar	None
Original Reporter	ldewailly (JIRA User)
Type	Bug

Environment

Ubuntu 16.04.1 LTS running built (on 25 Aug. 2016) from source swift:

Swift version 3.0-dev (LLVM 17c4c6cf7a, Clang 4ca9e01a7c, Swift 3900166)
Target: x86_64-unknown-linux-gnu

Additional Detail from JIRA


Votes	2
Component/s
Labels	Bug, Linux, RunTimeCrash, Runtime
Assignee	@jckarter
Priority	Medium

md5: 885dcf5c262f6999c619fafcdbb702aa

Issue Description:

From REPL, the following code causes the process to die:

1> import Foundation
2> do { try JSONSerialization.jsonObject(with: "HTTP".data(using: .utf8)!, options:.allowFragments) } catch let error { print("\(error)") } 
Execution interrupted. Enter code to recover and continue.
Enter LLDB commands to investigate (type :help for assistance.)

Removing the print statement produces the expected error:

1> import Foundation
2> do { try JSONSerialization.jsonObject(with: "HTTP".data(using: .utf8)!, options:.allowFragments) } catch let error { print("") }

Not catching the error also works:

1> import Foundation
2> try JSONSerialization.jsonObject(with: "HTTP".data(using: .utf8)!, options:.allowFragments)
$E0: Error = {
  instance_type = {
    Foundation.NSObject = {}
    _domain = "NSCocoaErrorDomain"
    _code = 3840
    _userInfo = 1 key/value pair {
      [0] = {
        key = "NSDebugDescription"
        value = "JSON text did not start with array or object and option to allow fragments not set."
      }
    }
  }
}

Note that this does not occur on Darwin (Xcode 8 beta 6)

The text was updated successfully, but these errors were encountered:

alblue · 2016-08-25T15:01:08Z

The following backtrace can be seen:

Welcome to Swift version 3.0-dev (LLVM 17c4c6cf7a, Clang 4ca9e01a7c, Swift 390016683e). Type :help for assistance.
  1> import Foundation
  2> do { try JSONSerialization.jsonObject(with: "HTTP".data(using: .utf8)!, options:.allowFragments) } catch let error { print("\(error)") }
Execution interrupted. Enter code to recover and continue.
Enter LLDB commands to investigate (type :help for assistance.)
  3> :bt
* thread #&#8203;1: tid = 15106, 0x00007ffff7d0a467 libswiftCore.so`swift::TargetExistentialTypeMetadata<swift::InProcess>::projectValue(swift::OpaqueValue const*) const + 71, name = 'repl_swift', stop reason = signal SIGSEGV: invalid address (fault address: 0x90)
  * frame #&#8203;0: 0x00007ffff7d0a467 libswiftCore.so`swift::TargetExistentialTypeMetadata<swift::InProcess>::projectValue(swift::OpaqueValue const*) const + 71
    frame #&#8203;1: 0x00007ffff7cd50d8 libswiftCore.so`findDynamicValueAndType(swift::OpaqueValue*, swift::TargetMetadata<swift::InProcess> const*, swift::OpaqueValue*&, swift::TargetMetadata<swift::InProcess> const*&, bool&, bool) + 56
    frame #&#8203;2: 0x00007ffff7cd5090 libswiftCore.so`swift_getDynamicType + 32
    frame #&#8203;3: 0x00007ffff7b92507 libswiftCore.so`Swift._print_unlocked <A, B where B: Swift.TextOutputStream> (A, inout B) -> () + 55
    frame #&#8203;4: 0x00007ffff7b2d1b7 libswiftCore.so`Swift.String.init <A> (stringInterpolationSegment : A) -> Swift.String + 55
    frame #&#8203;5: 0x00007ffff7f6a1d6 $__lldb_expr4`main + 470
    frame #&#8203;6: 0x00000000004009d0 repl_swift`swift_once + 16
    frame #&#8203;7: 0x00007fffffffe3d0
    frame #&#8203;8: 0x00007ffff6daa830 libc.so.6`__libc_start_main(main=(repl_swift`main), argc=1, argv=0x00007fffffffe548, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffe538) + 240 at libc-start.c:291
    frame #&#8203;9: 0x00000000004009f9 repl_swift`_start + 41

belkadan · 2016-08-25T18:33:57Z

@DougGregor, who's responsible for runtime-level error handling?

DougGregor · 2016-08-25T18:35:59Z

@jckarter knows this code best

jckarter · 2016-08-29T17:30:55Z

Looks like a problem with printing and error existentials, not necessarily the error handling itself.

swift-ci · 2016-11-10T10:06:58Z

Comment by Vlad Gorlov (JIRA)

Hello.)

Seems I got the same issue on iOS:

#&#8203;0. Crashed: com.apple.main-thread
0  libswiftCore.dylib             0x1012045e4 swift::_swift_getClass(void const*) + 24
1  libswiftCore.dylib             0x1011ddc58 findDynamicValueAndType(swift::OpaqueValue*, swift::Metadata const*, swift::OpaqueValue*&, swift::Metadata const*&, bool&) + 192
2  libswiftCore.dylib             0x1011ddb88 swift_getDynamicType + 32
3  libswiftCore.dylib             0x101108d24 _TFs15_print_unlockedu0_R_s16OutputStreamTyperFTxRq__T_ + 60
4  DreamApp                       0x100363d60 AppDelegate.(handleRequestIfNeeded(UIApplication, launchOptions : [NSObject : AnyObject]?) -> Bool).(closure #&#8203;1).(closure #&#8203;1) (AppDelegate.swift)
5  DreamApp                       0x1000ed044 -[OAuthSignInManager completeWithError:shouldLogOut:] (OAuthSignInManager.m:79)
6  DreamApp                       0x1000ece6c __42-[OAuthSignInManager tryToSignIn:failure:]_block_invoke.1394 (OAuthSignInManager.m:60)
7  DreamApp                       0x1000de668 +[AccountAPI autoLoginWithCompletion:failure:] (AccountAPI.m:85)
8  DreamApp                       0x1000eccdc -[OAuthSignInManager tryToSignIn:failure:] (OAuthSignInManager.m:62)
9  DreamApp                       0x100363bc0 AppDelegate.(handleRequestIfNeeded(UIApplication, launchOptions : [NSObject : AnyObject]?) -> Bool).(closure #&#8203;1) (AppDelegate.swift:283)
10 DreamApp                       0x10036cedc partial apply for AppDelegate.(handleRequestIfNeeded(UIApplication, launchOptions : [NSObject : AnyObject]?) -> Bool).(closure #&#8203;1) (AppDelegate.swift)
11 libdispatch.dylib              0x18e2e1200 _dispatch_call_block_and_release + 24
12 libdispatch.dylib              0x18e2e11c0 _dispatch_client_callout + 16
13 libdispatch.dylib              0x18e2e5d6c _dispatch_main_queue_callback_4CF + 1000
14 CoreFoundation                 0x18f403f2c __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 12
15 CoreFoundation                 0x18f401b18 __CFRunLoopRun + 1660
16 CoreFoundation                 0x18f330048 CFRunLoopRunSpecific + 444
17 GraphicsServices               0x190db6198 GSEventRunModal + 180
18 UIKit                          0x19531c2fc -[UIApplication _run] + 684
19 UIKit                          0x195317034 UIApplicationMain + 208
20 Carmudi                        0x1000abcf4 main (main.m:14)
21 libdispatch.dylib              0x18e3145b8 (Missing)

System info:

iOS Version: 10.1.1 (14B100)
Device: iPhone 6
Swift version (not sure exactly but seems this one): Apple Swift version 3.0.1 (swiftlang-800.0.58.6 clang-800.0.42.1)

Line of code where issues is happen:
Logger.error(subsystem: .appServices, category: .handling, message: String(describing: error))

Now i am trying to use this line of code:
Logger.error(subsystem: .appServices, category: .handling, message: error.localizedDescription)

dmcgloin · 2017-08-07T17:00:14Z

Seeing what appears to be same issue:

iOS 9, iPad 3

Xcode 8.3.3 w/ Swift 3.1

Stack trace from Crashlytics:

Crashed: com.apple.main-thread

0 libswiftCore.dylib 0x130f000 swift::_swift_getClass(void const*)
 1 libswiftCore.dylib 0x1307583 swift_getObjectType + 8
 2 libswiftCore.dylib 0x12ecc91 findDynamicValueAndType(swift::OpaqueValue*, swift::TargetMetadata<swift::InProcess> const*, swift::OpaqueValue*&, swift::TargetMetadata<swift::InProcess> const*&, bool&, bool, bool) + 432
 3 libswiftCore.dylib 0x12ecad9 swift_getDynamicType + 30
 4 libswiftCore.dylib 0x112d6dc TFs15_print_unlockedu0_R_s16TextOutputStreamrFTxRqT + 120
 5 ItsDeductible 0x1646fc DonationItem.receiptText.getter (DonationItemExtension.swift)
 6 ItsDeductible 0x165ee8 @objc DonationItem.auditEntryDetails.getter + 1380072
 7 ItsDeductible 0x17ddf8 DonationActivityItemSource.activityViewController(_:itemForActivityType (DonationActivityItemSource.swift:57)
 8 ItsDeductible 0x17de84 @objc DonationActivityItemSource.activityViewController(_:itemForActivityType (DonationActivityItemSource.swift)
 9 UIKit 0x250752e9 -[UIActivityViewController _activityItemValues] + 1672
 10 UIKit 0x256f6cdd __88-[UIActivityViewController _availableActivitiesForItems:applicationExtensionActivities:]_block_invoke + 68
 11 UIKit 0x2580b71d __91-[_UIActivityApplicationExtensionDiscovery activitiesMatchingInputItems:error:updateBlock:]_block_invoke_2 + 52
 12 libdispatch.dylib 0x2046d823 _dispatch_call_block_and_release + 10
 13 libdispatch.dylib 0x2046d80f _dispatch_client_callout + 22
 14 libdispatch.dylib 0x2047bba9 _dispatch_main_queue_callback_4CF$VARIANT$mp + 1524
 15 CoreFoundation 0x208c1b6d _CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE_ + 8
 16 CoreFoundation 0x208c0067 __CFRunLoopRun + 1574
 17 CoreFoundation 0x2080f229 CFRunLoopRunSpecific + 520
 18 CoreFoundation 0x2080f015 CFRunLoopRunInMode + 108
 19 GraphicsServices 0x21dffac9 GSEventRunModal + 160
 20 UIKit 0x24ee3189 UIApplicationMain + 144
 21 ItsDeductible 0x6e260 main (AppDelegate.swift:10)
 22 libdispatch.dylib 0x204b7873 (Missing)

swift-ci transferred this issue from apple/swift-issues Apr 25, 2022

AnthonyLatsis added the crash Bug: A crash, i.e., an abnormal termination of software label Dec 12, 2022

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

[SR-2476] Swift process crashes when printing out error #45081

[SR-2476] Swift process crashes when printing out error #45081

swift-ci commented Aug 25, 2016

alblue commented Aug 25, 2016

belkadan commented Aug 25, 2016

DougGregor commented Aug 25, 2016

jckarter commented Aug 29, 2016

swift-ci commented Nov 10, 2016

dmcgloin mannequin commented Aug 7, 2017

[SR-2476] Swift process crashes when printing out error #45081

[SR-2476] Swift process crashes when printing out error #45081

Comments

swift-ci commented Aug 25, 2016

alblue commented Aug 25, 2016

belkadan commented Aug 25, 2016

DougGregor commented Aug 25, 2016

jckarter commented Aug 29, 2016

swift-ci commented Nov 10, 2016

dmcgloin mannequin commented Aug 7, 2017