KT-15878 Extension shadowed by member shouldn't be reported for infix/operator extensions when member is non-infix/operator

compiler/frontend/src/org/jetbrains/kotlin/resolve/ShadowedExtensionChecker.kt

@@ -91,6 +91,7 @@ class ShadowedExtensionChecker(val typeSpecificityComparator: TypeSpecificityCom
         if (extension.valueParameters.size != member.valueParameters.size) return false
         if (extension.varargParameterPosition() != member.varargParameterPosition()) return false
         if (extension.isOperator && !member.isOperator) return false
+        if (extension.isInfix && !member.isInfix) return false
 
         val extensionSignature = FlatSignature.createForPossiblyShadowedExtension(extension)
         val memberSignature = FlatSignature.createFromCallableDescriptor(member)

compiler/testData/diagnostics/tests/dataFlowInfoTraversal/BinaryExpressionIdentifier.kt

@@ -1,6 +1,6 @@
 // !CHECK_TYPE
 
-infix fun Int.<!EXTENSION_SHADOWED_BY_MEMBER!>compareTo<!>(<!UNUSED_PARAMETER!>o<!>: Int) = 0
+infix fun Int.compareTo(<!UNUSED_PARAMETER!>o<!>: Int) = 0
 
 fun foo(a: Number): Int {
     val result = (a as Int) compareTo <!DEBUG_INFO_SMARTCAST!>a<!>

compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/infixExtensionVsNonInfixMember.kt

@@ -0,0 +1,7 @@
+interface IFoo {
+    fun foo(i: Int): Int
+    infix fun bar(i: Int): Int
+}
+
+infix fun IFoo.foo(i: Int) = i
+infix fun IFoo.<!EXTENSION_SHADOWED_BY_MEMBER!>bar<!>(i: Int) = i

compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/infixExtensionVsNonInfixMember.txt

@@ -0,0 +1,12 @@
+package
+
+public infix fun IFoo.bar(/*0*/ i: kotlin.Int): kotlin.Int
+public infix fun IFoo.foo(/*0*/ i: kotlin.Int): kotlin.Int
+
+public interface IFoo {
+    public abstract infix fun bar(/*0*/ i: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
+    public abstract fun foo(/*0*/ i: kotlin.Int): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
+    public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
+}

compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/operatorExtensionVsNonOperatorMember.kt

@@ -1,5 +1,7 @@
 interface Test {
     fun invoke()
+    operator fun invoke(i: Int): Int
 }
 
-operator fun Test.invoke() {}
+operator fun Test.invoke() {}
+operator fun Test.<!EXTENSION_SHADOWED_BY_MEMBER!>invoke<!>(i: Int) = i

compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/operatorExtensionVsNonOperatorMember.txt

@@ -1,10 +1,12 @@
 package
 
 public operator fun Test.invoke(): kotlin.Unit
+public operator fun Test.invoke(/*0*/ i: kotlin.Int): kotlin.Int
 
 public interface Test {
     public open override /*1*/ /*fake_override*/ fun equals(/*0*/ other: kotlin.Any?): kotlin.Boolean
     public open override /*1*/ /*fake_override*/ fun hashCode(): kotlin.Int
     public abstract fun invoke(): kotlin.Unit
+    public abstract operator fun invoke(/*0*/ i: kotlin.Int): kotlin.Int
     public open override /*1*/ /*fake_override*/ fun toString(): kotlin.String
 }

compiler/tests/org/jetbrains/kotlin/checkers/DiagnosticsTestGenerated.java

@@ -16035,6 +16035,12 @@ public class DiagnosticsTestGenerated extends AbstractDiagnosticsTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("infixExtensionVsNonInfixMember.kt")
+                public void testInfixExtensionVsNonInfixMember() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/infixExtensionVsNonInfixMember.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("localExtensionShadowedByMember.kt")
                 public void testLocalExtensionShadowedByMember() throws Exception {
                     String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/diagnostics/tests/redeclarations/shadowedExtension/localExtensionShadowedByMember.kt");