[Test] Disable tests that require new libswiftCore features for back deploy.

rdar://76564535

Author: nate-chandler

test/Concurrency/Runtime/actor_keypaths.swift

@@ -3,6 +3,7 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
+// UNSUPPORTED: use_os_stdlib
 
 actor Page {
     let initialNumWords : Int
@@ -74,4 +75,4 @@ erasePages(book, badPages: enumeratePageKeys(from: 0, to: 100))
 
 guard bookHasChanged(book, currentGetter: \Page.numWords, initialGetter: \Page.initialNumWords) else {
     fatalError("book should be wiped!")
-}
+}

test/Concurrency/Runtime/async_taskgroup_asynciterator_semantics.swift

@@ -1,6 +1,7 @@
 // RUN: %target-run-simple-swift(-Xfrontend -enable-experimental-concurrency -parse-as-library) | %FileCheck %s --dump-input=always
 // REQUIRES: executable_test
 // REQUIRES: concurrency
+// UNSUPPORTED: use_os_stdlib
 // UNSUPPORTED: linux
 // XFAIL: windows
 

test/Concurrency/Runtime/checked_continuation.swift

@@ -2,6 +2,7 @@
 
 // REQUIRES: executable_test
 // REQUIRES: concurrency
+// UNSUPPORTED: use_os_stdlib
 
 import _Concurrency
 import StdlibUnittest

test/Concurrency/Runtime/executor_deinit1.swift

@@ -3,6 +3,7 @@
 // REQUIRES: executable_test
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
+// UNSUPPORTED: use_os_stdlib
 
 // https://bugs.swift.org/browse/SR-14461
 // UNSUPPORTED: linux

test/Concurrency/Runtime/yielding_continuation.swift

@@ -2,6 +2,7 @@
 
 // REQUIRES: executable_test
 // REQUIRES: concurrency
+// UNSUPPORTED: use_os_stdlib
 
 // https://bugs.swift.org/browse/SR-14466
 // UNSUPPORTED: OS=windows-msvc

test/Interpreter/actor_class_forbid_objc_assoc_objects.swift

@@ -5,6 +5,7 @@
 // REQUIRES: concurrency
 // REQUIRES: objc_interop
 // REQUIRES: executable_test
+// UNSUPPORTED: use_os_stdlib
 
 import ObjectiveC
 import _Concurrency

test/Interpreter/actor_subclass_metatypes.swift

@@ -5,6 +5,7 @@
 // REQUIRES: concurrency
 // REQUIRES: objc_interop
 // REQUIRES: executable_test
+// UNSUPPORTED: use_os_stdlib
 
 import ObjectiveC
 import _Concurrency

test/Sanitizers/tsan/actor_counters.swift

@@ -4,6 +4,7 @@
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
 // REQUIRES: tsan_runtime
+// UNSUPPORTED: use_os_stdlib
 // UNSUPPORTED: linux
 // UNSUPPORTED: windows
 

test/Sanitizers/tsan/async_let_fibonacci.swift

@@ -4,6 +4,7 @@
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
 // REQUIRES: tsan_runtime
+// UNSUPPORTED: use_os_stdlib
 
 #if canImport(Darwin)
 import Darwin

test/Sanitizers/tsan/async_taskgroup_next.swift

@@ -4,6 +4,7 @@
 // REQUIRES: concurrency
 // REQUIRES: libdispatch
 // REQUIRES: tsan_runtime
+// UNSUPPORTED: use_os_stdlib
 
 var scratchBuffer: UnsafeMutableBufferPointer<Int> = .allocate(capacity: 1000)