Improving handling of broken bootpaths with an implicit hardcoded --release

java/java.source.base/src/org/netbeans/modules/java/source/parsing/JavacParser.java

@@ -1034,9 +1034,12 @@ private static JavacTaskImpl createJavacTask(
             options.add("-proc:none"); // NOI18N, Disable annotation processors
         }
         if (compilerOptions != null) {
-            for (String compilerOption : validateCompilerOptions(compilerOptions.getArguments(), validatedSourceLevel)) {
-                options.add(compilerOption);
-            }
+            options.addAll(
+                validateCompilerOptions(
+                    compilerOptions.getArguments(),
+                    useRelease != null ? com.sun.tools.javac.code.Source.lookup(useRelease) : validatedSourceLevel
+                )
+            );
         }
         if (!additionalModules.isEmpty()) {
             options.add("--add-modules");       //NOI18N
@@ -1098,8 +1101,12 @@ private static String useRelease(final String requestedSource, com.sun.tools.jav
         if (validatedSourceLevel.equals(sourceLevel)) {
             return null;
         }
-        if (sourceLevel.compareTo(com.sun.tools.javac.code.Source.JDK7) <= 0) {
-            sourceLevel = com.sun.tools.javac.code.Source.JDK7;
+        if (!sourceLevel.isSupported()) {
+            for (com.sun.tools.javac.code.Source searchForSupported : com.sun.tools.javac.code.Source.values()) {
+                if (searchForSupported.isSupported()) {
+                    sourceLevel = searchForSupported;
+                }
+            }
         }
         return sourceLevel.isSupported() ? sourceLevel.requiredTarget().multiReleaseValue() : null;
     }

java/java.source.base/test/unit/src/org/netbeans/modules/java/source/parsing/JavacParserTest.java

@@ -93,6 +93,8 @@
 import org.netbeans.modules.parsing.spi.SchedulerTask;
 import org.netbeans.modules.parsing.spi.SourceModificationEvent;
 import org.netbeans.modules.parsing.spi.TaskFactory;
+import org.netbeans.spi.java.queries.CompilerOptionsQueryImplementation;
+import org.openide.util.lookup.ProxyLookup;
 
 /**
  *
@@ -627,6 +629,53 @@ public void run(CompilationController parameter) throws Exception {
         }, true);
     }
 
+    public void testReleaseValidateCompilerOptionsBasedOnRelease() throws Exception {
+        FileObject f = createFile("test/Test.java",
+                                  """
+                                  package test;
+                                  import javax.tools.Diagnostic;
+                                  """);
+        SourceUtilsTestUtil.setSourceLevel(f, "17");
+        SourceUtilsTestUtil.setCompilerOptions(f, List.of("--limit-modules=java.base"));
+        JavaSource js = JavaSource.create(new ClasspathInfo.Builder(ClassPath.EMPTY).build(), f);
+
+        js.runUserActionTask(new Task<CompilationController>() {
+            public void run(CompilationController parameter) throws Exception {
+                assertTrue(Phase.RESOLVED.compareTo(parameter.toPhase(Phase.RESOLVED)) <= 0);
+                assertEquals(parameter.getDiagnostics().toString(), 1, parameter.getDiagnostics().size());
+
+                Set<String> codes = new HashSet<String>();
+
+                for (Diagnostic d : parameter.getDiagnostics()) {
+                    codes.add(d.getCode());
+                }
+
+                assertEquals(new HashSet<String>(Arrays.asList("compiler.err.package.not.visible")), codes);
+            }
+        }, true);
+    }
+
+    public void testReleaseUnsupportedSourceLevel() throws Exception {
+        FileObject f = createFile("test/Test.java",
+                                  """
+                                  package test;
+                                  public class Test {
+                                      public static void main(String... args) {
+                                          System.out.println("");
+                                      }
+                                  }
+                                  """);
+        SourceUtilsTestUtil.setSourceLevel(f, "1.4");
+        JavaSource js = JavaSource.create(new ClasspathInfo.Builder(ClassPath.EMPTY).build(), f);
+
+        js.runUserActionTask(new Task<CompilationController>() {
+            public void run(CompilationController parameter) throws Exception {
+                assertTrue(Phase.RESOLVED.compareTo(parameter.toPhase(Phase.RESOLVED)) <= 0);
+                assertEquals(parameter.getDiagnostics().toString(), 0, parameter.getDiagnostics().size());
+            }
+        }, true);
+    }
+
     private FileObject createFile(String path, String content) throws Exception {
         FileObject file = FileUtil.createData(sourceRoot, path);
         TestUtilities.copyStringToFile(file, content);