deprecation inspection: do not suggest fix if method is not applicable IDEA-209685

java/java-analysis-impl/src/com/intellij/codeInspection/deprecation/DeprecationInspectionBase.java

@@ -234,6 +234,12 @@ public abstract class DeprecationInspectionBase extends LocalInspectionTool {
     else {
       PsiExpression qualifierExpression = call.getMethodExpression().getQualifierExpression();
       qualifierText = qualifierExpression == null ? "" : qualifierExpression.getText() + ".";
+
+      PsiType qualifierType = ExpressionUtils.getQualifierOrThis(call.getMethodExpression()).getType();
+      PsiClass qualifierClass = PsiUtil.resolveClassInType(qualifierType);
+      if (qualifierClass == null) return false;
+      PsiClass suggestedClass = suggestedReplacement.getContainingClass();
+      if (suggestedClass == null || !InheritanceUtil.isInheritorOrSelf(qualifierClass, suggestedClass, true)) return false;
     }
 
     PsiElementFactory elementFactory = JavaPsiFacade.getElementFactory(initial.getProject());

java/java-tests/testData/inspection/deprecation/quickFix/beforeMismatchQualifier.java

@@ -0,0 +1,21 @@
+// "Replace method call with Test2.mmm" "false"
+class Test {
+  static void example() {
+    Test t = new Test();
+    t.m<caret>mm();
+  }
+
+  /**
+   * {@link Test2#mmm()}
+   *
+   */
+  @Deprecated
+  void mmm() {
+  }
+
+}
+
+class Test2 {
+  void mmm() {
+  }
+}