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@swift-6.0.3 -swift-version 6 -strict-concurrency=complete class Foo { var value = 0 } actor Bar { func useFoo(foo: sending Foo) { Task { foo.value += 1 } foo.value += 1 } } (edited)
swift60 BOT 9/25/2024 6:04 AM
exit status: 1 with <stdin>:6:9: error: value of non-Sendable type '@isolated(any) @async @callee_guaranteed @substituted <τ_0_0> () -> @out τ_0_0 for <()>' accessed after being transferred; later accesses could race 4 | actor Bar { 5 | func useFoo(foo: sending Foo) { 6 | Task { | `- error: value of non-Sendable type '@isolated(any) @async @callee_guaranteed @substituted <τ_0_0> () -> @out τ_0_0 for <()>' accessed after being transferred; later accesses could race 7 | foo.value += 1 8 | } 9 | foo.value += 1 | `- note: access can happen concurrently 10 | } 11 | } (edited)