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75 lines
2.8 KiB
Swift
75 lines
2.8 KiB
Swift
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -import-objc-header %S/Inputs/globals.h -emit-silgen %s | %FileCheck %s
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// REQUIRES: objc_interop
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// This test makes sure loading from globals properly retains/releases loads from globals.
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// NSString was the only real problem, as the compiler treats NSString globals specially.
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// The rest of these are just hedges against future changes.
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// From header:
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// globalString: __strong NSString*
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// globalObject: __strong NSObject*
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// globalID: __strong id
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// globalArray: __strong NSArray*
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// globalConstArray: __strong NSArray *const
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func main() {
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Globals.sharedInstance() // Initialize globals (dispatch_once)
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// CHECK: global_addr @globalConstArray : $*Optional<NSArray>
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// CHECK: global_addr @globalArray : $*Optional<NSArray>
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// CHECK: global_addr @globalId : $*Optional<AnyObject>
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// CHECK: global_addr @globalObject : $*Optional<NSObject>
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// CHECK: global_addr @globalString : $*NSString
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// CHECK: [[globalString:%.*]] = load [copy] {{%.*}} : $*NSString
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// CHECK: [[bridgeStringFunc:%.*]] = function_ref @{{.*}} : $@convention(method) (@owned Optional<NSString>, @thin String.Type) -> @owned String
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// CHECK: [[wrappedString:%.*]] = enum $Optional<NSString>, #Optional.some!enumelt.1, [[globalString]] : $NSString
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// CHECK: [[stringMetaType:%.*]] = metatype $@thin String.Type
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// CHECK: [[bridgedString:%.*]] = apply [[bridgeStringFunc]]([[wrappedString]], [[stringMetaType]]) : $@convention(method) (@owned Optional<NSString>, @thin String.Type) -> @owned String
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let string = globalString // Problematic case, wasn't being retained
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// CHECK: [[load_1:%.*]] = load [copy] {{%.*}} : $*Optional<NSObject>
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let object = globalObject
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// CHECK: [[load_2:%.*]] = load [copy] {{%.*}} : $*Optional<AnyObject>
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let id = globalId
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// CHECK: [[load_3:%.*]] = load [copy] {{%.*}} : $*Optional<NSArray>
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let arr = globalArray
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// CHECK: [[load_4:%.*]] = load [copy] {{%.*}} : $*Optional<NSArray>
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let constArr = globalConstArray
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// Make sure there's no more copies
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// CHECK-NOT: load [copy]
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print(string as Any)
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print(object as Any)
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print(id as Any)
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print(arr as Any)
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print(constArr as Any)
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// CHECK: [[PRINT_FUN:%.*]] = function_ref @_T0s5printySayypGd_SS9separatorSS10terminatortF : $@convention(thin) (@owned Array<Any>, @owned String, @owned String) -> ()
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// CHECK: apply [[PRINT_FUN]]({{.*}})
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// CHECK: destroy_value [[load_4]]
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// CHECK: destroy_value [[load_3]]
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// CHECK: destroy_value [[load_2]]
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// CHECK: destroy_value [[load_1]]
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// CHECK: destroy_value [[bridgedString]]
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// Make sure there's no more destroys
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// CHECK-NOT: destroy_value
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// CHECK: } // end sil function '_T017retaining_globals4mainyyF'
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}
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main()
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main() // Used to crash here, due to use-after-free.
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main()
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main()
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main()
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main()
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