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7b4786e723
The ContextualizeClosures walker re-parents and assigns discriminators to autoclosures. We weren't doing this walk for function builder bodies, which meant that proper invariants were not being established for the implicit autoclosures synthesized for partially applied method references. This is a recent regression from my change to build curry thunks for unapplied method references in Sema. Fixes <rdar://problem/61039516>.
33 lines
1.3 KiB
Swift
33 lines
1.3 KiB
Swift
// RUN: %target-swift-emit-silgen %s | %FileCheck %s
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@_functionBuilder
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struct Builder {
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static func buildBlock<T1>(_ t1: T1) -> (T1) {
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return (t1)
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}
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}
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struct Handler {
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var firstHandler: () -> ()
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var secondHandler: () -> ()
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}
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// We were neglecting to assign discriminators and re-parent
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// autoclosures, which would manifest as curried method references
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// producing a bogus diagnostic about captures from inside a
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// nested type.
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class Outer {
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struct Inner {
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@Builder
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var build: Handler {
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Handler(firstHandler: self.handler, secondHandler: self.handler)
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}
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private func handler() {}
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}
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}
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// CHECK-LABEL: sil private [ossa] @$s29function_builder_curry_thunks5OuterC5InnerV5buildAA7HandlerVvgyycAEcfu_ : $@convention(thin) (Outer.Inner) -> @owned @callee_guaranteed () -> ()
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// CHECK-LABEL: sil private [ossa] @$s29function_builder_curry_thunks5OuterC5InnerV5buildAA7HandlerVvgyycAEcfu_yycfu0_ : $@convention(thin) (Outer.Inner) -> ()
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// CHECK-LABEL: sil private [ossa] @$s29function_builder_curry_thunks5OuterC5InnerV7handler33_DC254A3F89F9C7E65D25434E199F17A4LLyyF : $@convention(method) (Outer.Inner) -> ()
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// CHECK-LABEL: sil private [ossa] @$s29function_builder_curry_thunks5OuterC5InnerV5buildAA7HandlerVvgyycAEcfu1_ : $@convention(thin) (Outer.Inner) -> @owned @callee_guaranteed () -> () |