inference: fix for incomplete constructor call without argument list

EA-144940 - IAE: RecursionManager$.$$$reportNull$$$

GitOrigin-RevId: 7367e1bccdcb5d0373293e44dd8afdfb105ee311

java/java-psi-api/src/com/intellij/psi/infos/MethodCandidateInfo.java

@@ -447,10 +447,14 @@ public class MethodCandidateInfo extends CandidateInfo{
         .inferTypeArguments(typeParameters, method.getParameterList().getParameters(), arguments, this, parent, policy,
                             myLanguageLevel);
     };
-    PsiSubstitutor substitutor = !includeReturnConstraint
-                                 ? ourOverloadGuard.doPreventingRecursion(myArgumentList, false, computable)
-                                 : computable.compute();
-    return ObjectUtils.assertNotNull(substitutor);
+    if (!includeReturnConstraint) {
+      return myArgumentList == null
+             ? PsiSubstitutor.EMPTY
+             : ObjectUtils.assertNotNull(ourOverloadGuard.doPreventingRecursion(myArgumentList, false, computable));
+    }
+    else {
+      return computable.compute();
+    }
   }
 
   public boolean isRawSubstitution() {

java/java-tests/testData/codeInsight/gotoDeclaration/MultipleGenericConstructorsOnIncompleteCall.java

@@ -0,0 +1,9 @@
+import java.lang.String;
+
+class X {
+  <S> X(int i){}
+  <T> X(String s){}
+  {
+    new <caret>X
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInsight/navigation/GotoDeclarationTest.java

@@ -64,7 +64,7 @@ public class GotoDeclarationTest extends LightCodeInsightTestCase {
     assertEquals("java.lang", JavaDirectoryService.getInstance().getPackage(element).getQualifiedName());
   }
 
-  public void testMultipleConstructors() {
+  private void doTestMultipleConstructors() {
     String name = getTestName(false);
     configureByFile("/codeInsight/gotoDeclaration/" + name + ".java");
     final int offset = getEditor().getCaretModel().getOffset();
@@ -79,6 +79,14 @@ public class GotoDeclarationTest extends LightCodeInsightTestCase {
     assertEquals(candidates.toString(), 2, candidates.size());
   }
 
+  public void testMultipleConstructors() {
+    doTestMultipleConstructors();
+  }
+
+  public void testMultipleGenericConstructorsOnIncompleteCall() {
+    doTestMultipleConstructors();
+  }
+
   public void testMultipleConstructorsButArrayCreation() {
     String name = getTestName(false);
     configureByFile("/codeInsight/gotoDeclaration/" + name + ".java");