volatile field's nullity shouldn't be used for dfa (IDEA-64696)

java/java-impl/src/com/intellij/codeInspection/dataFlow/StandardInstructionVisitor.java

@@ -92,7 +92,9 @@ public class StandardInstructionVisitor extends InstructionVisitor {
           onAssigningToNotNullableVariable(instruction, runner);
         }
       }
-      memState.setVarValue(var, dfaSource);
+      if (!(psiVariable instanceof PsiField) || !psiVariable.hasModifierProperty(PsiModifier.VOLATILE)) {
+        memState.setVarValue(var, dfaSource);
+      }
     }
 
     memState.push(dfaDest);

java/java-tests/testData/inspection/dataFlow/fixture/NullableAnonymousVolatile.java

@@ -0,0 +1,26 @@
+import javax.swing.*;
+
+class Test {
+    public void setObj(Object obj) {
+        this.obj = obj;
+    }
+
+    public void test() {
+        obj = new Object();
+        javax.swing.SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                Object o = obj;
+                if (o != null) {
+                    System.out.println("x");
+                }
+            }
+        });
+        final Object u = new Object();
+        if (<warning descr="Condition 'u != null'  is always 'true'">u != null</warning>) {
+          System.out.println("y");
+        }
+        obj = null;
+    }
+
+    private volatile Object obj;
+}

java/java-tests/testData/inspection/dataFlow/fixture/NullableAnonymousVolatileNotNull.java

@@ -0,0 +1,24 @@
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+
+class Test {
+    public void setObj(Object obj) {
+        this.obj = obj;
+    }
+
+    public void test() {
+        obj = new Object();
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                Object o = obj;
+                if (<warning descr="Condition 'o != null'  is always 'true'">o != null</warning>) {
+                    System.out.println("x");
+                }
+            }
+        });
+      obj = <warning descr="'null' is assigned to a variable that is annotated with @NotNull">null</warning>;
+    }
+
+    @NotNull private volatile Object obj;
+}

java/java-tests/testSrc/com/intellij/codeInspection/DataFlowInspectionFixtureTest.java

@@ -29,5 +29,7 @@ public class DataFlowInspectionFixtureTest extends JavaCodeInsightFixtureTestCas
   public void testTryInAnonymous() throws Throwable { doTest(); }
   public void testNullableAnonymousMethod() throws Throwable { doTest(); }
   public void testNullableAnonymousParameter() throws Throwable { doTest(); }
+  public void testNullableAnonymousVolatile() throws Throwable { doTest(); }
+  public void testNullableAnonymousVolatileNotNull() throws Throwable { doTest(); }
 
 }