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Andrew Trick
401d2ee072
Avoid passing an invalid substitution map into createApply. Required conditions (from the bug report): 1. `~Copyable` struct with user-defined `deinit` 2. Nested inside a constrained extension where all generic parameters are concrete 3. A `destroy_value` or `destroy_addr` of the struct's value exists in some function 4. DeinitDevirtualizer runs (release-mode optimization pipeline) Fixes rdar://173803881 ([GH:#88213] [SILOptimizer] DeinitDevirtualizer assertion failure with ~Copyable type in all-concrete constrained extension) Suggested by: coenttb
20 lines
801 B
Swift
20 lines
801 B
Swift
// RUN: %target-swift-frontend -sil-verify-all -emit-sil -O %s | %FileCheck %s
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// REQUIRES: swift_in_compiler
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public struct Outer<T> {}
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extension Outer where T == UInt8 {
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public struct InnerNC: ~Copyable {
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var x: Int
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deinit {}
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}
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}
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// rdar://173803881 (~Copyable type in all-concrete constrained extension)
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// The DeinitDevirtualization should not crash.
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//
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// CHECK-LABEL: sil @$s32moveonly_deinit_devirtualization24testConstrainedExtensionyyAA5OuterVAAs5UInt8VRszlE7InnerNCVyAF_GnF : $@convention(thin) (@owned Outer<UInt8>.InnerNC) -> () {
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// CHECK-NOT: destroy
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// CHECK-LABEL: } // end sil function '$s32moveonly_deinit_devirtualization24testConstrainedExtensionyyAA5OuterVAAs5UInt8VRszlE7InnerNCVyAF_GnF'
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public func testConstrainedExtension(_ s: consuming Outer<UInt8>.InnerNC) {}
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