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Merge pull request #31058 from slavapestov/opaque-type-lowering-access-level-fix-5.2
AST: Fix accessibility checking in opaque type archetype substitution logic [5.2]
2 parents 49e70ed + 203ca6e commit 029130b

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5 files changed

+102
-23
lines changed

5 files changed

+102
-23
lines changed

‎lib/AST/Type.cpp

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Original file line numberDiff line numberDiff line change
@@ -2828,10 +2828,14 @@ static bool canSubstituteTypeInto(Type ty, const DeclContext *dc,
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nominal->getDeclContext()->getParentSourceFile() ==
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dc->getParentSourceFile())
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return true;
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return nominal->getEffectiveAccess() > AccessLevel::FilePrivate;
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case OpaqueSubstitutionKind::SubstituteNonResilientModule:
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// Can't access types that are not public from a different module.
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if (dc->getParentModule() == nominal->getDeclContext()->getParentModule())
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return true;
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return nominal->getEffectiveAccess() > AccessLevel::Internal;
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}
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}

‎test/SILGen/Inputs/opaque_result_type_fragile_other.swift

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@@ -0,0 +1,29 @@
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public protocol View {}
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struct InternalView : View {}
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struct InternalGenericView<T> : View {}
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public struct PublicView : View {}
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public struct PublicGenericView<T> : View {}
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extension View {
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public func passThrough() -> some View {
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return self
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}
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public func wrapWithInternalView() -> some View {
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return InternalView()
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}
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public func wrapWithInternalGenericView() -> some View {
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return InternalGenericView<Self>()
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}
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public func wrapWithPublicView() -> some View {
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return PublicView()
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}
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public func wrapWithPublicGenericView() -> some View {
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return PublicGenericView<Self>()
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}
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}

‎test/SILGen/opaque_result_type_fragile.swift

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,46 @@
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// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend -disable-availability-checking -emit-module %S/Inputs/opaque_result_type_fragile_other.swift -emit-module-path %t/opaque_result_type_fragile_other.swiftmodule
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// RUN: %target-swift-frontend -disable-availability-checking -emit-silgen -I%t %s | %FileCheck %s
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import opaque_result_type_fragile_other
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struct InternalView: View {}
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public struct PublicView: View {}
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public func testInternalView() {
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let v = InternalView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE11passThroughQryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out τ_0_0
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_ = v.passThrough()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE016wrapWithInternalF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out @_opaqueReturnTypeOf("$s32opaque_result_type_fragile_other4ViewPAAE016wrapWithInternalF0QryF", 0) 🦸<τ_0_0>
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_ = v.wrapWithInternalView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE023wrapWithInternalGenericF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out @_opaqueReturnTypeOf("$s32opaque_result_type_fragile_other4ViewPAAE023wrapWithInternalGenericF0QryF", 0) 🦸<τ_0_0>
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_ = v.wrapWithInternalGenericView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE014wrapWithPublicF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out PublicView
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_ = v.wrapWithPublicView()
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//CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE021wrapWithPublicGenericF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out PublicGenericView<τ_0_0>
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_ = v.wrapWithPublicGenericView()
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}
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public func testPublicView() {
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let v = PublicView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE11passThroughQryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out τ_0_0
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_ = v.passThrough()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE016wrapWithInternalF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out @_opaqueReturnTypeOf("$s32opaque_result_type_fragile_other4ViewPAAE016wrapWithInternalF0QryF", 0) 🦸<τ_0_0>
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_ = v.wrapWithInternalView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE023wrapWithInternalGenericF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out @_opaqueReturnTypeOf("$s32opaque_result_type_fragile_other4ViewPAAE023wrapWithInternalGenericF0QryF", 0) 🦸<τ_0_0>
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_ = v.wrapWithInternalGenericView()
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// CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE014wrapWithPublicF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out PublicView
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_ = v.wrapWithPublicView()
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//CHECK: function_ref @$s32opaque_result_type_fragile_other4ViewPAAE021wrapWithPublicGenericF0QryF : $@convention(method) <τ_0_0 where τ_0_0 : View> (@in_guaranteed τ_0_0) -> @out PublicGenericView<τ_0_0>
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_ = v.wrapWithPublicGenericView()
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}

‎test/SILOptimizer/cast_folding.swift

Lines changed: 2 additions & 23 deletions
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,5 @@
1-
// RUN: %target-swift-frontend -disable-availability-checking -O -emit-sil %s | %FileCheck %s
2-
// RUN: %target-swift-frontend -disable-availability-checking -Onone -emit-sil %s | %FileCheck %s --check-prefix=MANDATORY
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// RUN: %target-swift-frontend -Xllvm -sil-disable-pass=FunctionSignatureOpts -Xllvm -sil-disable-pass=PerfInliner -enable-ownership-stripping-after-serialization -disable-availability-checking -O -emit-sil %s | %FileCheck %s
4-
// RUN: %target-swift-frontend -enable-ownership-stripping-after-serialization -disable-availability-checking -Onone -emit-sil %s | %FileCheck %s --check-prefix=MANDATORY
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// RUN: %target-swift-frontend -O -emit-sil %s | %FileCheck %s
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// RUN: %target-swift-frontend -Xllvm -sil-disable-pass=FunctionSignatureOpts -Xllvm -sil-disable-pass=PerfInliner -enable-ownership-stripping-after-serialization -O -emit-sil %s | %FileCheck %s
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// We want to check two things here:
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// - Correctness
@@ -1069,25 +1067,6 @@ public func testCastToPForOptionalFailure() -> Bool {
10691067
return testCastToPForOptional(t)
10701068
}
10711069

1072-
struct Underlying : P {
1073-
}
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1075-
public func returnOpaque() -> some P {
1076-
return Underlying()
1077-
}
1078-
1079-
// MANDATORY-LABEL: sil{{.*}} @$s12cast_folding23testCastOpaqueArchetypeyyF
1080-
// MANDATORY: [[O:%.*]] = alloc_stack $@_opaqueReturnTypeOf("$s12cast_folding12returnOpaqueQryF", 0)
1081-
// MANDATORY: [[F:%.*]] = function_ref @$s12cast_folding12returnOpaqueQryF
1082-
// MANDATORY: apply [[F]]([[O]])
1083-
// MANDATORY: [[U:%.*]] = alloc_stack $Underlying
1084-
// MANDATORY: unconditional_checked_cast_addr @_opaqueReturnTypeOf{{.*}}in [[O]] : $*@_opaqueReturnTypeOf{{.*}}to Underlying in [[U]] : $*Underlying
1085-
// MANDATORY: load [[U]] : $*Underlying
1086-
@inlinable
1087-
public func testCastOpaqueArchetype() {
1088-
let o = returnOpaque() as! Underlying
1089-
}
1090-
10911070
print("test0=\(test0())")
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10931072
print("test1=\(test1())")

‎test/SILOptimizer/cast_folding_opaque.swift

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,21 @@
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// RUN: %target-swift-frontend -enable-library-evolution -disable-availability-checking -O -emit-sil %s
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// RUN: %target-swift-frontend -enable-library-evolution -disable-availability-checking -Onone -emit-sil %s | %FileCheck %s
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public protocol P {}
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public struct Underlying : P {
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}
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public func returnOpaque() -> some P {
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return Underlying()
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}
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// CHECK-LABEL: sil [serialized] @$s19cast_folding_opaque23testCastOpaqueArchetypeAA10UnderlyingVyF
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// CHECK: [[O:%.*]] = alloc_stack $@_opaqueReturnTypeOf("$s19cast_folding_opaque12returnOpaqueQryF", 0)
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// CHECK: [[F:%.*]] = function_ref @$s19cast_folding_opaque12returnOpaqueQryF
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// CHECK: apply [[F]]([[O]])
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// CHECK: unconditional_checked_cast_addr @_opaqueReturnTypeOf{{.*}}in [[O]] : $*@_opaqueReturnTypeOf{{.*}}to Underlying in %0 : $*Underlying
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@inlinable
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public func testCastOpaqueArchetype() -> Underlying {
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return returnOpaque() as! Underlying
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}

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