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swift-mirror/test/PrintAsObjC/enums-frozen.swift
Becca Royal-Gordon da07ff577c [PrintAsClang] Warn about unstable decl order
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.
2025-02-14 21:41:36 -08:00

24 lines
1.0 KiB
Swift

// RUN: %empty-directory(%t)
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -enable-source-import -emit-module -emit-module-doc -o %t %s -import-objc-header %S/Inputs/enums.h -disable-objc-attr-requires-foundation-module -enable-library-evolution -module-name enums
// RUN: %target-swift-frontend(mock-sdk: %clang-importer-sdk) -parse-as-library %t/enums.swiftmodule -typecheck -verify -emit-objc-header-path %t/enums.h -import-objc-header %S/Inputs/enums.h -disable-objc-attr-requires-foundation-module -enable-library-evolution
// RUN: %FileCheck %s < %t/enums.h
// RUN: %check-in-clang %t/enums.h
// RUN: %check-in-clang -fno-modules -Qunused-arguments %t/enums.h -include ctypes.h -include CoreFoundation.h
// REQUIRES: objc_interop
import Foundation
// CHECK-LABEL: typedef SWIFT_ENUM(NSInteger, FrozenEnum, closed) {
@objc @frozen public enum FrozenEnum: Int {
case yes
case no
}
// CHECK-LABEL: typedef SWIFT_ENUM(NSInteger, NonFrozenEnum, open) {
@objc public enum NonFrozenEnum: Int {
case yes
case no
case fileNotFound
}