Merge pull request #40929 from compnerd/5.5.3-unicode

[5.5] stdlib: change the console to UTF-8 on start

Author: shahmishal

stdlib/public/stubs/LibcShims.cpp

@@ -31,6 +31,15 @@
 
 #include "../SwiftShims/LibcShims.h"
 
+#if defined(_WIN32)
+static void __attribute__((__constructor__))
+_swift_stdlib_configure_console_mode(void) {
+  static UINT uiPrevConsoleCP = GetConsoleOutputCP();
+  atexit([]() { SetConsoleOutputCP(uiPrevConsoleCP); });
+  SetConsoleOutputCP(CP_UTF8);
+}
+#endif
+
 SWIFT_RUNTIME_STDLIB_INTERNAL
 int _swift_stdlib_putchar_unlocked(int c) {
 #if defined(_WIN32)
@@ -42,9 +51,9 @@ int _swift_stdlib_putchar_unlocked(int c) {
 
 SWIFT_RUNTIME_STDLIB_INTERNAL
 __swift_size_t _swift_stdlib_fwrite_stdout(const void *ptr,
-                                                  __swift_size_t size,
-                                                  __swift_size_t nitems) {
-    return fwrite(ptr, size, nitems, stdout);
+                                           __swift_size_t size,
+                                           __swift_size_t nitems) {
+  return fwrite(ptr, size, nitems, stdout);
 }
 
 SWIFT_RUNTIME_STDLIB_SPI

test/Concurrency/Runtime/async_taskgroup_asynciterator_semantics.swift

@@ -4,7 +4,6 @@
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
 // UNSUPPORTED: linux
-// XFAIL: windows
 
 struct Boom: Error {}
 

test/Concurrency/Runtime/async_taskgroup_is_asyncsequence.swift

@@ -8,7 +8,6 @@
 // UNSUPPORTED: back_deployment_runtime
 
 // UNSUPPORTED: linux
-// XFAIL: windows
 
 @available(SwiftStdlib 5.5, *)
 func test_taskGroup_is_asyncSequence() async {

test/Concurrency/Runtime/async_taskgroup_throw_rethrow.swift

@@ -7,8 +7,6 @@
 // REQUIRES: concurrency_runtime
 // UNSUPPORTED: back_deployment_runtime
 
-// XFAIL: OS=windows-msvc
-
 struct Boom: Error {}
 struct IgnoredBoom: Error {}