CLI: suppress warning on JDK 9+ with illegal access to ResourceBundle

The underlying issue is tracked in IDEA-248785.

 #KT-43704 Fixed

compiler/cli/bin/kotlinc

@@ -67,13 +67,18 @@ fi
 
 declare -a kotlin_app
 
+java_version="$(findJavaVersion)"
+if [[ $java_version -ge 9 ]]; then
+    # Workaround the illegal reflective access warning from ReflectionUtil to ResourceBundle.setParent, see IDEA-248785.
+    java_args=("${java_args[@]}" "--add-opens" "java.base/java.util=ALL-UNNAMED")
+fi
+
 if [ -n "$KOTLIN_RUNNER" ]; then
     java_args=("${java_args[@]}" "-Dkotlin.home=${KOTLIN_HOME}")
     kotlin_app=("${KOTLIN_HOME}/lib/kotlin-runner.jar" "org.jetbrains.kotlin.runner.Main")
 else
     [ -n "$KOTLIN_COMPILER" ] || KOTLIN_COMPILER=org.jetbrains.kotlin.cli.jvm.K2JVMCompiler
 
-    java_version="$(findJavaVersion)"
     if [[ $java_version < 13 ]]; then
         java_args=("${java_args[@]}" "-noverify")
     fi

compiler/cli/bin/kotlinc.bat

@@ -40,14 +40,20 @@ shift
 goto loop
 :loopend
 
-if "%_KOTLIN_RUNNER%"=="1" (
-  java %JAVA_OPTS% "-Dkotlin.home=%_KOTLIN_HOME%" -cp "%_KOTLIN_HOME%\lib\kotlin-runner.jar" ^
+setlocal EnableDelayedExpansion
+
+call :set_java_version
+if !_java_major_version! geq 9 (
+  rem Workaround the illegal reflective access warning from ReflectionUtil to ResourceBundle.setParent, see IDEA-248785.
+  set JAVA_OPTS=!JAVA_OPTS! "--add-opens" "java.base/java.util=ALL-UNNAMED"
+)
+
+if "!_KOTLIN_RUNNER!"=="1" (
+  java !JAVA_OPTS! "-Dkotlin.home=%_KOTLIN_HOME%" -cp "%_KOTLIN_HOME%\lib\kotlin-runner.jar" ^
     org.jetbrains.kotlin.runner.Main %KOTLIN_OPTS%
 ) else (
-  setlocal EnableDelayedExpansion
   set _ADDITIONAL_CLASSPATH=
 
-  call :set_java_version
   if !_java_major_version! lss 13 (
     set JAVA_OPTS=!JAVA_OPTS! "-noverify"
   )

compiler/tests/org/jetbrains/kotlin/cli/LauncherScriptTest.kt

@@ -33,7 +33,8 @@ class LauncherScriptTest : TestCaseWithTmpdir() {
         expectedStdout: String = "",
         expectedStderr: String = "",
         expectedExitCode: Int = 0,
-        workDirectory: File? = null
+        workDirectory: File? = null,
+        environment: Map<String, String> = emptyMap(),
     ) {
         val executableFileName = if (SystemInfo.isWindows) "$executableName.bat" else executableName
         val launcherFile = File(PathUtil.kotlinPathsForDistDirectory.homePath, "bin/$executableFileName")
@@ -43,9 +44,10 @@ class LauncherScriptTest : TestCaseWithTmpdir() {
         // So, use ProcessBuilder instead.
         val pb = ProcessBuilder(
             launcherFile.absolutePath,
-            // In cmd, `=` is delimeter, so we need to surround parameter with quotes.
+            // In cmd, `=` is delimiter, so we need to surround parameter with quotes.
             *quoteIfNeeded(args)
         )
+        pb.environment().putAll(environment)
         pb.directory(workDirectory)
         val process = pb.start()
         val stdout =
@@ -334,4 +336,17 @@ fun f() : Result<Int> = Result.success(42)
         )
         runProcess("kotlin", "-howtorun", "classfile", "test.HelloWorldKt", expectedStdout = "Hello!\n", workDirectory = tmpdir)
     }
+
+    fun testKotlincJdk15() {
+        val jdk15 = mapOf("JAVA_HOME" to KtTestUtil.getJdk15Home().absolutePath)
+        runProcess(
+            "kotlinc", "$testDataDirectory/helloWorld.kt", "-d", tmpdir.path,
+            environment = jdk15,
+        )
+
+        runProcess(
+            "kotlin", "-e", "listOf('O'.toString() + 'K')",
+            expectedStdout = "[OK]\n", environment = jdk15,
+        )
+    }
 }