mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
5b3fe49cd0
Introduce a new runtime entry point,
`swift_objc_swift3ImplicitObjCEntrypoint`, which is called from any
Objective-C method that was generated due to `@objc` inference rules
that were removed by SE-0160. Aside from being a central place where
users can set a breakpoint to catch when this occurs, this operation
provides logging capabilities that can be enabled by setting the
environment variable SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT:
SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=0 (default): do not log
SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=1: log failed messages
SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=2: log failed messages with
backtrace
SWIFT_DEBUG_IMPLICIT_OBJC_ENTRYPOINT=3: log failed messages with
backtrace and abort the process.
The log messages look something like:
***Swift runtime: entrypoint -[t.MyClass foo] generated by
implicit @objc inference is deprecated and will be removed in
Swift 4
15 lines
547 B
Swift
15 lines
547 B
Swift
// RUN: %target-swift-frontend -assume-parsing-unqualified-ownership-sil %s -emit-ir -disable-objc-attr-requires-foundation-module | %FileCheck %s
|
|
|
|
// REQUIRES: CPU=x86_64
|
|
// REQUIRES: objc_interop
|
|
|
|
import Foundation
|
|
|
|
class ObjCSubclass : NSObject {
|
|
func foo() { }
|
|
}
|
|
|
|
// CHECK-LABEL: define hidden void @_T0016objc_deprecated_A7_thunks12ObjCSubclassC3fooyyFTo(%0*, i8*)
|
|
// CHECK: entry:
|
|
// CHECK: [[SELF:%[0-9]+]] = bitcast %0* %0 to %objc_object*
|
|
// CHECK-NEXT: call void @swift_objc_swift3ImplicitObjCEntrypoint(%objc_object* [[SELF]], i8* %1) |