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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.
60 lines
3.2 KiB
Swift
60 lines
3.2 KiB
Swift
// RUN: %empty-directory(%t)
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -enable-source-import -emit-module -emit-module-doc -o %t %s -disable-objc-attr-requires-foundation-module
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// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -parse-as-library %t/cdecl.swiftmodule -typecheck -verify -emit-objc-header-path %t/cdecl.h -import-objc-header %S/../Inputs/empty.h -disable-objc-attr-requires-foundation-module
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// RUN: %FileCheck %s < %t/cdecl.h
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// RUN: %check-in-clang %t/cdecl.h
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// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/cdecl.h -include ctypes.h -include CoreFoundation.h
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// RUN: %check-in-clang-cxx -fno-modules -Qunused-arguments %t/cdecl.h -include ctypes.h -include CoreFoundation.h
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// REQUIRES: objc_interop
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// CHECK: /// What a nightmare!
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// CHECK-LABEL: SWIFT_EXTERN double (^ _Nonnull block_nightmare(SWIFT_NOESCAPE float (^ _Nonnull x)(NSInteger)))(char) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
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/// What a nightmare!
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@_cdecl("block_nightmare")
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public func block_nightmare(x: @convention(block) (Int) -> Float)
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-> @convention(block) (CChar) -> Double { return { _ in 0 } }
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// CHECK-LABEL: SWIFT_EXTERN double (^ _Nonnull block_recurring_nightmare(float (^ _Nonnull x)(SWIFT_NOESCAPE NSInteger (^ _Nonnull)(double))))(SWIFT_NOESCAPE char (^ _Nonnull)(unsigned char)) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
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@_cdecl("block_recurring_nightmare")
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public func block_recurring_nightmare(x: @escaping @convention(block) (@convention(block) (Double) -> Int) -> Float)
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-> @convention(block) (_ asdfasdf: @convention(block) (CUnsignedChar) -> CChar) -> Double {
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fatalError()
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}
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// CHECK-LABEL: SWIFT_EXTERN void foo_bar(NSInteger x, NSInteger y) SWIFT_NOEXCEPT;
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@_cdecl("foo_bar")
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func foo(x: Int, bar y: Int) {}
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// CHECK-LABEL: SWIFT_EXTERN double (* _Nonnull function_pointer_nightmare(float (* _Nonnull x)(NSInteger)))(char) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
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@_cdecl("function_pointer_nightmare")
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func function_pointer_nightmare(x: @convention(c) (Int) -> Float)
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-> @convention(c) (CChar) -> Double { return { _ in 0 } }
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// CHECK-LABEL: SWIFT_EXTERN double (* _Nonnull function_pointer_recurring_nightmare(float (* _Nonnull x)(NSInteger (* _Nonnull)(double))))(char (* _Nonnull)(unsigned char)) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
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@_cdecl("function_pointer_recurring_nightmare")
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public func function_pointer_recurring_nightmare(x: @escaping @convention(c) (@convention(c) (Double) -> Int) -> Float)
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-> @convention(c) (@convention(c) (CUnsignedChar) -> CChar) -> Double {
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fatalError()
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}
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// CHECK-LABEL: SWIFT_EXTERN void has_keyword_arg_names(NSInteger auto_, NSInteger union_) SWIFT_NOEXCEPT;
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@_cdecl("has_keyword_arg_names")
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func keywordArgNames(auto: Int, union: Int) {}
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@objc
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class C {}
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// CHECK-LABEL: SWIFT_EXTERN C * _Null_unspecified return_iuo(void) SWIFT_NOEXCEPT SWIFT_WARN_UNUSED_RESULT;
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@_cdecl("return_iuo")
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func returnIUO() -> C! { return C() }
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// CHECK-LABEL: SWIFT_EXTERN void return_never(void) SWIFT_NOEXCEPT SWIFT_NORETURN;
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@_cdecl("return_never")
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func returnNever() -> Never { fatalError() }
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// CHECK-LABEL: SWIFT_EXTERN void takes_iuo(C * _Null_unspecified c) SWIFT_NOEXCEPT;
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@_cdecl("takes_iuo")
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func takesIUO(c: C!) {}
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