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async_let_capture.swift
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// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple %s -emit-sil -o /dev/null -verify
// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple %s -emit-sil -o /dev/null -verify -strict-concurrency=targeted
// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple %s -emit-sil -o /dev/null -verify -strict-concurrency=complete
// RUN: %target-swift-frontend -target %target-swift-5.1-abi-triple %s -emit-sil -o /dev/null -verify -strict-concurrency=complete -enable-upcoming-feature RegionBasedIsolation
// REQUIRES: concurrency
// REQUIRES: swift_feature_RegionBasedIsolation
func autoclosureCapture(_:@autoclosure()asyncthrows->Int)async{}
func nonescapingCapture(_:()asyncthrows->Int){}
func escapingCapture(_:@escaping()asyncthrows->Int){}
func foo()async{
asyncletx=32
asynclety= x // expected-error{{not supported}}
_ =await y
awaitautoclosureCapture(await x)// expected-error{{not supported}}
nonescapingCapture{await x }// expected-error{{not supported}}
escapingCapture{await x }// expected-error{{not supported}}
}