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da07ff577c
PrintAsClang is supposed to emit declarations in the same order regardless of the compiler’s internal state, but we have repeatedly found that our current criteria are inadequate, resulting in non-functionality-affecting changes to generated header content. Add a diagnostic that’s emitted when this happens soliciting a bug report. Since there *should* be no cases where the compiler fails to order declarations, this diagnostic is never actually emitted. Instead, we test this change by enabling `-verify` on nearly all PrintAsClang tests to make sure they are unaffected. This did demonstrate a missing criterion that only mattered in C++ mode: extensions that varied only in their generic signature were not sorted stably. Add a sort criterion for this.
104 lines
3.6 KiB
Swift
104 lines
3.6 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend %s -module-name Class -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/class.h
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// RUN: %FileCheck %s < %t/class.h
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// RUN: %check-interop-cxx-header-in-clang(%t/class.h)
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// RUN: %target-swift-frontend %s -module-name Class -enable-library-evolution -clang-header-expose-decls=all-public -typecheck -verify -emit-clang-header-path %t/class-evo.h
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// RUN: %FileCheck %s < %t/class-evo.h
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// RUN: %check-interop-cxx-header-in-clang(%t/class-evo.h)
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public class BaseClass {
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var field: Int64
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init() {
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field = 0
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print("init BaseClass")
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}
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deinit {
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print("destroy BaseClass")
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}
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}
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public class DerivedClass: BaseClass {
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override init() {
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super.init()
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print("init DerivedClass")
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}
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deinit {
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print("destroy DerivedClass")
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}
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}
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public final class DerivedDerivedClass: DerivedClass {
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override init() {
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super.init()
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print("init DerivedDerivedClass")
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}
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deinit {
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print("destroy DerivedDerivedClass")
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}
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}
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public final class SiblingDerivedClass: BaseClass {
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}
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public func returnDerivedClass() -> DerivedClass {
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return DerivedClass()
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}
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public func returnDerivedDerivedClass() -> DerivedDerivedClass {
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return DerivedDerivedClass()
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}
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public func useBaseClass(_ x: BaseClass) {
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print("useBaseClass, type=\(x.self)")
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}
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public func useDerivedClass(_ x: DerivedClass) {
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print("useDerivedClass, type=\(x.self)")
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}
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// CHECK: class SWIFT_SYMBOL("s:5Class07DerivedA0C") DerivedClass : public BaseClass {
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// CHECK-NEXT: public:
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// CHECK-NEXT: using BaseClass::BaseClass;
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// CHECK-NEXT: using BaseClass::operator=;
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// CHECK-NEXT: protected:
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// CHECK-NEXT: SWIFT_INLINE_THUNK DerivedClass(void * _Nonnull ptr) noexcept : BaseClass(ptr) {}
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// CHECK-NEXT: private:
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// CHECK-NEXT: friend class _impl::_impl_DerivedClass;
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// CHECK-NEXT: #pragma clang diagnostic push
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// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
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// CHECK-NEXT: #pragma clang diagnostic push
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// CHECK-NEXT: #pragma clang diagnostic ignored "-Wreserved-identifier"
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// CHECK-NEXT: typedef char $s5Class07DerivedA0CD;
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// CHECK-NEXT: static inline constexpr $s5Class07DerivedA0CD __swift_mangled_name = 0;
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// CHECK-NEXT: #pragma clang diagnostic pop
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// CHECK-NEXT: #pragma clang diagnostic pop
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// CHECK-NEXT: };
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// CHECK: class SWIFT_SYMBOL("s:5Class07DerivedbA0C") DerivedDerivedClass final : public DerivedClass {
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// CHECK-NEXT: public:
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// CHECK-NEXT: using DerivedClass::DerivedClass;
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// CHECK-NEXT: using DerivedClass::operator=;
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// CHECK-NEXT: protected:
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// CHECK-NEXT: SWIFT_INLINE_THUNK DerivedDerivedClass(void * _Nonnull ptr) noexcept : DerivedClass(ptr) {}
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// CHECK-NEXT: private:
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// CHECK-NEXT: friend class _impl::_impl_DerivedDerivedClass;
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// CHECK-NEXT: #pragma clang diagnostic push
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// CHECK-NEXT: #pragma clang diagnostic ignored "-Wc++17-extensions"
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// CHECK-NEXT: #pragma clang diagnostic push
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// CHECK-NEXT: #pragma clang diagnostic ignored "-Wreserved-identifier"
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// CHECK-NEXT: typedef char $s5Class07DerivedbA0CD;
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// CHECK-NEXT: static inline constexpr $s5Class07DerivedbA0CD __swift_mangled_name = 0;
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// CHECK-NEXT: #pragma clang diagnostic pop
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// CHECK-NEXT: #pragma clang diagnostic pop
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// CHECK-NEXT: };
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// Verify base class names are adjusted to avoid conflict with C++ keywords.
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public class auto {}
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public class derivedRegister: auto {}
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// CHECK: class SWIFT_SYMBOL("s:5Class15derivedRegisterC") derivedRegister : public auto_ {
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// CHECK: using auto_::auto_;
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// CHECK: using auto_::operator=;
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// CHECK: SWIFT_INLINE_THUNK derivedRegister(void * _Nonnull ptr) noexcept : auto_(ptr) {}
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