mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
dda3d7be36
Modify IRGen to emit builtin access markers with an error flag in Swift 3 mode. KeyPath enforcement is required by user code in Swift 4+ mode, but is implemented within the standard library. A [builtin] flag marks the special case for access generated by Builtins so that they are always enforced as an error regardless of the language mode. This is necessary for Swift 4.2 because the standard library continues to build in Swift 3 mode. Once the standard library build migrates, this is all irrelevant. This does not actually affect existing Swift 3 code, since the KeyPath feature wasn't introduced until Swift 4. <rdar://problem/40115738> [Exclusivity] Enforce Keypath access as an error, not a warning in 4.2.
47 lines
1.3 KiB
Swift
47 lines
1.3 KiB
Swift
// RUN: %empty-directory(%t)
|
|
// RUN: %target-build-swift -swift-version 3 %s -o %t/a.out -enforce-exclusivity=checked -Onone
|
|
//
|
|
// RUN: %target-run %t/a.out 2>&1 | %FileCheck %s
|
|
// REQUIRES: executable_test
|
|
// REQUIRES: OS=macosx
|
|
|
|
import StdlibUnittest
|
|
import SwiftPrivatePthreadExtras
|
|
import Foundation
|
|
|
|
struct X {
|
|
var i = 7
|
|
}
|
|
|
|
func readAndPerform<T>(_ _: UnsafePointer<T>, closure: () ->()) {
|
|
closure()
|
|
}
|
|
|
|
func writeAndPerform<T>(_ _: UnsafeMutablePointer<T>, closure: () ->()) {
|
|
closure()
|
|
}
|
|
|
|
var globalX = X()
|
|
withUnsafePointer(to: &globalX) { _ = fputs(String(format: "globalX: 0x%lx\n", Int(bitPattern: $0)), stderr) }
|
|
// CHECK: globalX: [[ADDR:0x.*]]
|
|
|
|
fputs("Global Access\n", stderr);
|
|
readAndPerform(&globalX) {
|
|
globalX = X()
|
|
// CHECK-LABEL: Global Access
|
|
// CHECK: Simultaneous accesses to [[ADDR]], but modification requires exclusive access.
|
|
// CHECK: Previous access (a read) started at a.out`main + {{.*}} (0x{{.*}}).
|
|
// CHECK: Current access (a modification) started at:
|
|
// CHECK: a.out {{.*}} closure
|
|
// CHECK: a.out {{.*}} readAndPerform
|
|
// CHECK: a.out {{.*}} main
|
|
}
|
|
|
|
class C {
|
|
final var f = 7
|
|
}
|
|
|
|
var c = C()
|
|
withUnsafePointer(to: &c.f) { _ = fputs(String(format: "c.f: 0x%lx\n", Int(bitPattern: $0)), stderr) }
|
|
// CHECK: c.f: [[C_F_ADDR:0x.*]]
|