[swift-dev] Flaky test - objc_nonnull_lie_hack

[Ben Langmuir]

I saw this once on Tuesday.  I haven’t seen it since then.

> On Sep 9, 2016, at 2:45 PM, Slava Pestov via swift-dev <swift-dev at 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?
> 
> /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> {
>                                                                                               ^
> 
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