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3ae34e8e68
If there are no explicit concurrency attributes, isolated parameters, or captures associated with the closure it should infer `nonisolated(nonsending)` for the parent conversion injected by the solver (this conversion is injected because the solver cannot check captures to elide it). The change pushes `isIsolationInferenceBoundaryClosure` check down with added benefit of getting preconcurrency context from the parent.
97 lines
2.9 KiB
Swift
97 lines
2.9 KiB
Swift
// RUN: %target-typecheck-verify-swift -swift-version 5
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// RUN: %target-typecheck-verify-swift -swift-version 5 -strict-concurrency=complete -verify-additional-prefix complete-
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class NonSendable {} // expected-complete-note 3{{class 'NonSendable' does not conform to the 'Sendable' protocol}}
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func callee(_: @Sendable () -> NonSendable) {}
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var testLocalCaptures: Int {
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let ns = NonSendable()
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@Sendable func localFunc() -> NonSendable {
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return ns // expected-complete-warning {{capture of 'ns' with non-Sendable type 'NonSendable' in a '@Sendable' local function}}
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}
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callee { return ns } // expected-complete-warning {{capture of 'ns' with non-Sendable type 'NonSendable' in a '@Sendable' closure}}
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return 3
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}
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struct Bad {
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var c: Int = {
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let ns = NonSendable()
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callee { return ns } // expected-complete-warning {{capture of 'ns' with non-Sendable type 'NonSendable' in a '@Sendable' closure}}
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return 3
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}()
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}
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do {
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class Test { // expected-complete-note 2 {{class 'Test' does not conform to the 'Sendable' protocol}}
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func update() {}
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}
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func sendable(_: @Sendable () -> Void) {}
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@preconcurrency
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func sendable_preconcurrency(_: @Sendable () -> Void) {}
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func withMutable(_: (inout Test) -> Void) {}
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withMutable { test in
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sendable {
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test.update()
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// expected-complete-warning@-1 {{capture of 'test' with non-Sendable type 'Test' in a '@Sendable' closure}}
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// expected-warning@-2 {{mutable capture of 'inout' parameter 'test' is not allowed in concurrently-executing code}}
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}
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sendable_preconcurrency {
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test.update()
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// expected-complete-warning@-1 {{capture of 'test' with non-Sendable type 'Test' in a '@Sendable' closure}}
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// expected-complete-warning@-2 {{mutable capture of 'inout' parameter 'test' is not allowed in concurrently-executing code}}
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}
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}
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}
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class NotSendable {} // expected-complete-note {{class 'NotSendable' does not conform to the 'Sendable' protocol}}
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@available(*, unavailable)
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extension NotSendable : @unchecked Sendable {}
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@preconcurrency func withSendableClosure(_: @Sendable () -> Void) {}
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func testPreconcurrencyDowngrade(ns: NotSendable) {
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var x = 0
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withSendableClosure {
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_ = ns
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// expected-complete-warning@-1 {{capture of 'ns' with non-Sendable type 'NotSendable' in a '@Sendable' closure}}
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x += 1
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// expected-complete-warning@-1 {{mutation of captured var 'x' in concurrently-executing code}}
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}
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}
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// rdar://136766795
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do {
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class Class {
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static func test() -> @Sendable () -> Void {
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{
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// OK, an unbound reference is sendable.
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let _ = Class.method
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}
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}
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func method() {}
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}
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}
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do {
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class Class {}
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// expected-complete-note@-1 {{class 'Class' does not conform to the 'Sendable' protocol}}
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func test(_: @autoclosure @Sendable () -> Class) {}
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let c: Class
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test(c)
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// expected-complete-warning@-1:8 {{implicit capture of 'c' requires that 'Class' conforms to 'Sendable'}}
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}
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