averello/swift-mirror
1
0
Fork 0
mirror of https://github.com/apple/swift.git synced 2025-12-21 12:14:44 +01:00
Code Issues Packages Projects Releases Wiki Activity

[cxx-interop] Synthesize a deprecated zero initializer for C++ structs

Browse Source 
When importing a C header in the C++ language mode, Clang/Swift treat C structs as C++ structs.

Currently Swift synthesizes a default initializer that zero-initializes the backing memory of the struct for C structs, but not for C++ structs.

This is causing issues in existing projects that use C libraries and rely on having the default initializer available in Swift. This change enables the synthesis of a default initializer for C++ structs. Since many C++ structs are not designed to be initialized this way, the initializer is marked as deprecated in Swift.

rdar://109727620
This commit is contained in:
Egor Zhdan
2023-05-30 19:47:36 +01:00
parent 4920e4af84
commit fec48f9e63
6 changed files with 36 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
test/Interop/Cxx/class/constructors-objc-module-interface.swift
View File

@@ -7,4 +7,6 @@
// CHECK: struct ConstructorWithNSArrayParam {
// CHECK-NEXT: init(_ array: [Any]!)
// CHECK-NEXT: @available(*, deprecated, message
// CHECK-NEXT: init()
// CHECK-NEXT: }