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1a009f5b0d
Bail if the closure captures an ObjectiveC block which might _not_ be copied onto the heap, i.e optimized by SimplifyCopyBlock. We can't do this because the optimization inserts retains+releases for captured arguments. That's not possible for stack-allocated blocks. Fixes a mis-compile rdar://154241245
21 lines
541 B
Swift
21 lines
541 B
Swift
// RUN: %target-swift-frontend -parse-as-library -O %s -emit-sil | %FileCheck %s
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func callClosure<R>(_ body: () -> R) -> R {
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return body()
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}
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// Check that after removing a copy_block, no retains+releases are inserted for the block.
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// CHECK-LABEL: sil {{.*}}@testit :
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// CHECK-NOT: retain
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// CHECK-NOT: release
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// CHECK: } // end sil function 'testit'
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@_cdecl("testit")
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public func testit(_ block: (_ index: Int) -> Int) -> Bool {
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@inline(never)
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func c() -> Bool {
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return block(0) != 0
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}
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return callClosure(c)
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}
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