8333169: javac NullPointerException record.type

Reviewed-by: vromero

src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java

@@ -6025,6 +6025,19 @@ public void visitBindingPattern(JCBindingPattern that) {
             super.visitBindingPattern(that);
         }
 
+        @Override
+        public void visitRecordPattern(JCRecordPattern that) {
+            initTypeIfNeeded(that);
+            if (that.record == null) {
+                that.record = new ClassSymbol(0, TreeInfo.name(that.deconstructor),
+                                              that.type, syms.noSymbol);
+            }
+            if (that.fullComponentTypes == null) {
+                that.fullComponentTypes = List.nil();
+            }
+            super.visitRecordPattern(that);
+        }
+
         @Override
         public void visitNewClass(JCNewClass that) {
             if (that.constructor == null) {

test/langtools/tools/javac/patterns/Exhaustiveness.java

@@ -23,7 +23,7 @@
 
 /**
  * @test
- * @bug 8262891 8268871 8274363 8281100 8294670 8311038 8311815 8325215
+ * @bug 8262891 8268871 8274363 8281100 8294670 8311038 8311815 8325215 8333169
  * @summary Check exhaustiveness of switches over sealed types.
  * @library /tools/lib
  * @modules jdk.compiler/com.sun.tools.javac.api
@@ -2076,6 +2076,35 @@ static int r(R r) {
                """);
     }
 
+   @Test //JDK-8333169
+   public void testFlowForNestedSwitch(Path base) throws Exception {
+       doTest(base,
+              new String[0],
+              """
+              class Main {
+
+                  record A() {};
+
+                  public static void main(String[] args) {
+                      A a1 = new A();
+                      A a2 = new A();
+
+                      String causesCompilationError = log(
+                              switch(a1) {
+                                  case A() -> switch(a2) {
+                                      case A() -> "A";
+                                  };
+                              }
+                      );
+                   }
+
+                  static <T> T log(T t) {
+                      System.out.println("LOG: " + t);
+                      return t;
+                  }
+              }""");
+   }
+
     private void doTest(Path base, String[] libraryCode, String testCode, String... expectedErrors) throws IOException {
         doTest(base, libraryCode, testCode, false, expectedErrors);
     }