Running it in a loop on another machine doesn’t trigger it, so I’m thinking it 
might be a random variation in how the standard library is built?

> On Sep 9, 2016, at 2:49 PM, Mark Lacey <mark.la...@apple.com> wrote:
> 
> 
>> On Sep 9, 2016, at 2:45 PM, Slava Pestov via swift-dev <swift-dev@swift.org 
>> <mailto:swift-dev@swift.org>> wrote:
>> 
>> Hi all,
>> 
>> Is anyone else seeing this? I haven’t seen it in CI, but for me this test 
>> fails at random, very rarely too — looks like something is non-deterministic 
>> in the optimizer?
> 
> Yes, I hit this a couple days ago and attempted to reproduce and couldn’t.
> 
> Mark
> 
>> 
>> /Users/slava/new/swift/test/SILGen/objc_nonnull_lie_hack.swift:30:9: error: 
>> expected string not found in input
>> // OPT: [[METHOD:%[0-9]+]] = class_method [volatile] [[METATYPE]] : $@thick 
>> Gizmo.Type, #Gizmo.nonNilGizmo!1.foreign : (Gizmo.Type) -> () -> Gizmo , 
>> $@convention(objc_method) (@objc_metatype Gizmo.Type) -> @autoreleased Gizmo
>>         ^
>> <stdin>:329:34: note: scanning from here
>>  %0 = metatype $@thick Gizmo.Type, loc 
>> "SOURCE_DIR/test/SILGen/objc_nonnull_lie_hack.swift":36:21, scope 54 // 
>> user: %1
>>                                  ^
>> <stdin>:329:34: note: with variable "METATYPE" equal to "%0"
>>  %0 = metatype $@thick Gizmo.Type, loc 
>> "SOURCE_DIR/test/SILGen/objc_nonnull_lie_hack.swift":36:21, scope 54 // 
>> user: %1
>>                                  ^
>> <stdin>:330:2: note: possible intended match here
>>  %1 = class_method [volatile] %0 : $@thick Gizmo.Type, 
>> #Gizmo.nonNilGizmo!1.foreign : (Gizmo.Type) -> () -> Gizmo! , 
>> $@convention(objc_method) (@objc_metatype Gizmo.Type) -> @autoreleased 
>> Optional<Gizmo>, loc 
>> "SOURCE_DIR/test/SILGen/objc_nonnull_lie_hack.swift":36:27, scope 54 // 
>> user: %3
>>  ^
>> /Users/slava/new/swift/test/SILGen/objc_nonnull_lie_hack.swift:44:9: error: 
>> expected string not found in input
>> // OPT: [[METHOD:%[0-9]+]] = class_method [volatile] [[OBJ:%[0-9]+]] : 
>> $Gizmo, #Gizmo.nonNilGizmo!1.foreign : (Gizmo) -> () -> Gizmo , 
>> $@convention(objc_method) (Gizmo) -> @autoreleased Gizmo
>>         ^
>> <stdin>:1625:67: note: scanning from here
>> sil hidden 
>> @_TTSf4g___TF21objc_nonnull_lie_hack18callInstanceMethodFT5gizmoCSo5Gizmo_GSqS0__
>>  : $@convention(thin) (@guaranteed Gizmo) -> @owned Optional<Gizmo> {
>>                                                                   ^
>> /Users/slava/new/swift/test/SILGen/objc_nonnull_lie_hack.swift:58:9: error: 
>> expected string not found in input
>> // OPT: [[GETTER:%[0-9]+]] = class_method [volatile] [[OBJ:%[0-9]+]] : 
>> $Gizmo, #Gizmo.nonNilGizmoProperty!getter.1.foreign : (Gizmo) -> () -> Gizmo 
>> , $@convention(objc_method) (Gizmo) -> @autoreleased Gizmo
>>         ^
>> <stdin>:1842:88: note: scanning from here
>> sil hidden 
>> @_TTSf4g___TF21objc_nonnull_lie_hack12loadPropertyFT5gizmoCSo5Gizmo_GSqS0__ 
>> : $@convention(thin) (@guaranteed Gizmo) -> @owned Optional<Gizmo> {
>>                                                                              
>>           ^
>> /Users/slava/new/swift/test/SILGen/objc_nonnull_lie_hack.swift:71:9: error: 
>> expected string not found in input
>> // OPT: [[GETTER:%[0-9]+]] = class_method [volatile] [[OBJ:%[0-9]+]] : 
>> $Gizmo, #Gizmo.unownedNonNilGizmoProperty!getter.1.foreign : (Gizmo) -> () 
>> -> Gizmo , $@convention(objc_method) (Gizmo) -> @autoreleased Gizmo
>>         ^
>> <stdin>:2059:95: note: scanning from here
>> sil hidden 
>> @_TTSf4g___TF21objc_nonnull_lie_hack19loadUnownedPropertyFT5gizmoCSo5Gizmo_GSqS0__
>>  : $@convention(thin) (@guaranteed Gizmo) -> @owned Optional<Gizmo> {
>>                                                                              
>>                  ^
>> 
>> _______________________________________________
>> swift-dev mailing list
>> swift-dev@swift.org <mailto:swift-dev@swift.org>
>> https://lists.swift.org/mailman/listinfo/swift-dev
> 

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