stdlib: Adopt internal imports to suppress some warnings in tests.

Author: tshortli

stdlib/private/StdlibUnittest/RaceTest.swift

@@ -40,22 +40,22 @@ import SwiftPrivate
 import SwiftPrivateLibcExtras
 import SwiftPrivateThreadExtras
 #if canImport(Darwin)
-import Darwin
+internal import Darwin
 #elseif canImport(Glibc)
-import Glibc
+internal import Glibc
 #elseif canImport(Musl)
-import Musl
+internal import Musl
 #elseif canImport(Android)
-import Android
+internal import Android
 #elseif os(WASI)
-import WASILibc
+internal import WASILibc
 #elseif os(Windows)
-import CRT
-import WinSDK
+internal import CRT
+internal import WinSDK
 #endif
 
 #if _runtime(_ObjC)
-import ObjectiveC
+internal import ObjectiveC
 #else
 func autoreleasepool(invoking code: () -> Void) {
   // Native runtime does not have autorelease pools.  Execute the code

stdlib/private/StdlibUnittest/StdlibCoreExtras.swift

@@ -13,21 +13,21 @@
 import SwiftPrivate
 import SwiftPrivateLibcExtras
 #if canImport(Darwin)
-import Darwin
+internal import Darwin
 #elseif canImport(Glibc)
-import Glibc
+internal import Glibc
 #elseif canImport(Musl)
-import Musl
+internal import Musl
 #elseif canImport(Android)
-import Android
+internal import Android
 #elseif os(WASI)
-import WASILibc
+internal import WASILibc
 #elseif os(Windows)
-import CRT
+internal import CRT
 #endif
 
 #if _runtime(_ObjC)
-import Foundation
+internal import Foundation
 #endif
 
 //

stdlib/private/StdlibUnittest/StdlibUnittest.swift

@@ -17,25 +17,25 @@ import SwiftPrivateLibcExtras
 
 #if canImport(Darwin)
 #if _runtime(_ObjC)
-import Foundation
+internal import Foundation
 #endif
-import Darwin
-import var Darwin.errno
+internal import Darwin
+internal import var Darwin.errno
 #elseif canImport(Glibc)
-import Glibc
+internal import Glibc
 #elseif canImport(Musl)
-import Musl
+internal import Musl
 #elseif canImport(Android)
-import Android
+internal import Android
 #elseif os(WASI)
-import WASILibc
+internal import WASILibc
 #elseif os(Windows)
-import CRT
-import WinSDK
+internal import CRT
+internal import WinSDK
 #endif
 
 #if _runtime(_ObjC)
-import ObjectiveC
+internal import ObjectiveC
 #endif
 
 #if SWIFT_ENABLE_EXPERIMENTAL_CONCURRENCY

stdlib/private/SwiftReflectionTest/SwiftReflectionTest.swift

@@ -29,9 +29,9 @@ let RequestPointerSize = "p"
 
 
 #if os(macOS) || os(iOS) || os(watchOS) || os(tvOS) || os(visionOS)
-import MachO
-import Darwin
-import var Darwin.errno
+internal import MachO
+internal import Darwin
+internal import var Darwin.errno
 
 #if arch(x86_64) || arch(arm64)
 typealias MachHeader = mach_header_64

test/Interop/Cxx/templates/enable-if-typechecker.swift

@@ -4,6 +4,7 @@
 import StdlibUnittest
 import EnableIf
 
+
 let x = HasMethodWithEnableIf()
 x.onlyEnabledForBool("a")
-// CHECK: error: could not substitute parameters for C++ function template 'HasMethodWithEnableIf::onlyEnabledForBool': NSString *
+// CHECK: error: could not generate C++ types from the generic Swift types provided; the following Swift type(s) provided to 'HasMethodWithEnableIf::onlyEnabledForBool' could not be converted: String