Merge pull request #6120 from adrian-prantl/unxpass-regex

Un-XPASS regex REPL test.

Author: adrian-prantl

lldb/test/Shell/SwiftREPL/Regex.test

@@ -1,7 +1,5 @@
 // Test that we can use Swift's regex functionalities on the REPL.
 // REQUIRES: swift
-// XFAIL: system-darwin
-// This is expected to fail on macOS for now because Regex has an availability of 9999 (for now).
 
 // RUN: %lldb --repl < %s | FileCheck %s
 
@@ -12,3 +10,12 @@ let regex = /Order from <(.*)>, type: (.*), count in dozen: ([0-9]+)/
 import RegexBuilder
 let dslRegex = Regex { .digit }
 // CHECK: _StringProcessing.Regex<Substring> =
+
+// We should only see this output once, regardless of availability.
+// CHECK-NOT: _StringProcessing
+if #unavailable(macOS 13, iOS 16, watchOS 9, tvOS 16) {
+  // Work around the fact that the REPL doesn't print results for
+  // variables declared inside of a conditional.
+  print("_StringProcessing.Regex<(Substring, Substring, Substring, Substring)> =")
+  print("_StringProcessing.Regex<Substring> = ")
+}