[FIR] Incorrect warnings about inline function impact

^KT-65959 Fixed

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirLightTreeOldFrontendDiagnosticsTestGenerated.java

@@ -21182,6 +21182,12 @@ public class FirLightTreeOldFrontendDiagnosticsTestGenerated extends AbstractFir
         runTest("compiler/testData/diagnostics/tests/inline/valueClasses.kt");
       }
 
+      @Test
+      @TestMetadata("valueOfKFunctionTypeAsArgumentOfInlineFunction.kt")
+      public void testValueOfKFunctionTypeAsArgumentOfInlineFunction() {
+        runTest("compiler/testData/diagnostics/tests/inline/valueOfKFunctionTypeAsArgumentOfInlineFunction.kt");
+      }
+
       @Test
       @TestMetadata("vararg.kt")
       public void testVararg() {

compiler/fir/analysis-tests/tests-gen/org/jetbrains/kotlin/test/runners/FirPsiOldFrontendDiagnosticsTestGenerated.java

@@ -21188,6 +21188,12 @@ public class FirPsiOldFrontendDiagnosticsTestGenerated extends AbstractFirPsiDia
         runTest("compiler/testData/diagnostics/tests/inline/valueClasses.kt");
       }
 
+      @Test
+      @TestMetadata("valueOfKFunctionTypeAsArgumentOfInlineFunction.kt")
+      public void testValueOfKFunctionTypeAsArgumentOfInlineFunction() {
+        runTest("compiler/testData/diagnostics/tests/inline/valueOfKFunctionTypeAsArgumentOfInlineFunction.kt");
+      }
+
       @Test
       @TestMetadata("vararg.kt")
       public void testVararg() {

compiler/fir/checkers/src/org/jetbrains/kotlin/fir/analysis/checkers/declaration/FirInlineDeclarationChecker.kt

@@ -457,7 +457,7 @@ object FirInlineDeclarationChecker : FirFunctionChecker(MppCheckerKind.Common) {
             function.valueParameters.any { param ->
                 val type = param.returnTypeRef.coneType
                 !param.isNoinline && !type.isNullable
-                        && (type.isBasicFunctionType(session) || type.isSuspendOrKSuspendFunctionType(session))
+                        && type.isNonKFunctionType(session)
             }
         if (hasInlinableParameters) return
         if (function.isInlineOnly(session)) return

compiler/fir/providers/src/org/jetbrains/kotlin/fir/types/FunctionalTypeUtils.kt

@@ -59,6 +59,11 @@ fun ConeKotlinType.isBasicFunctionType(session: FirSession): Boolean {
     return isFunctionTypeWithPredicate(session) { it == FunctionTypeKind.Function }
 }
 
+// Function, SuspendFunction, KSuspendFunction, [Custom]Function, K[Custom]Function
+fun ConeKotlinType.isNonKFunctionType(session: FirSession): Boolean {
+    return isFunctionTypeWithPredicate(session) { it != FunctionTypeKind.KFunction }
+}
+
 // SuspendFunction, KSuspendFunction
 fun ConeKotlinType.isSuspendOrKSuspendFunctionType(session: FirSession): Boolean {
     return isFunctionTypeWithPredicate(session) {

compiler/testData/diagnostics/tests/inline/valueOfKFunctionTypeAsArgumentOfInlineFunction.kt

@@ -0,0 +1,7 @@
+// FIR_IDENTICAL
+// ISSUE: KT-65959
+import kotlin.reflect.KFunction0
+
+<!NOTHING_TO_INLINE!>inline<!> fun foo(block: KFunction0<Unit>) {
+    block()
+}

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/DiagnosticTestGenerated.java

@@ -21188,6 +21188,12 @@ public class DiagnosticTestGenerated extends AbstractDiagnosticTest {
         runTest("compiler/testData/diagnostics/tests/inline/valueClasses.kt");
       }
 
+      @Test
+      @TestMetadata("valueOfKFunctionTypeAsArgumentOfInlineFunction.kt")
+      public void testValueOfKFunctionTypeAsArgumentOfInlineFunction() {
+        runTest("compiler/testData/diagnostics/tests/inline/valueOfKFunctionTypeAsArgumentOfInlineFunction.kt");
+      }
+
       @Test
       @TestMetadata("vararg.kt")
       public void testVararg() {