psi2ir: Java annotations have no primary constructor

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/transformations/AnnotationGenerator.kt

@@ -88,15 +88,17 @@ class AnnotationGenerator(
 
     fun generateAnnotationConstructorCall(annotationDescriptor: AnnotationDescriptor): IrCall {
         val annotationType = annotationDescriptor.type
-        val annotationClassDescriptor = annotationType.constructor.declarationDescriptor
+        val annotationClassDescriptor = annotationType.constructor.declarationDescriptor as? ClassDescriptor
                 ?: throw AssertionError("No declaration descriptor for annotation $annotationDescriptor")
         assert(DescriptorUtils.isAnnotationClass(annotationClassDescriptor)) {
             "Annotation class expected: $annotationClassDescriptor"
         }
 
         val primaryConstructorDescriptor =
-            annotationClassDescriptor.safeAs<ClassDescriptor>()?.unsubstitutedPrimaryConstructor
-                    ?: throw AssertionError("No primary constructor for annotation class $annotationClassDescriptor")
+            annotationClassDescriptor.unsubstitutedPrimaryConstructor
+                    ?: annotationClassDescriptor.constructors.singleOrNull()
+                    ?: throw AssertionError("No constructor for annotation class $annotationClassDescriptor")
+
         val primaryConstructorSymbol = symbolTable.referenceConstructor(primaryConstructorDescriptor)
 
         val psi = annotationDescriptor.source.safeAs<PsiSourceElement>()?.psi

compiler/testData/ir/irText/declarations/annotations/javaAnnotation.kt

@@ -0,0 +1,16 @@
+// FILE: JavaAnn.java
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+@Retention(RetentionPolicy.RUNTIME)
+@interface JavaAnn {
+    String value() default "";
+    int i() default 0;
+}
+
+// FILE: javaAnnotation.kt
+@JavaAnn fun test1() {}
+
+@JavaAnn(value="abc", i=123) fun test2() {}
+
+@JavaAnn(i=123, value="abc") fun test3() {}

compiler/testData/ir/irText/declarations/annotations/javaAnnotation.txt

@@ -0,0 +1,17 @@
+FILE fqName:<root> fileName:/javaAnnotation.kt
+  FUN name:test1 visibility:public modality:FINAL <> () returnType:Unit flags:
+    annotations:
+      CALL 'constructor JavaAnn(String = ..., Int = ...)' type=JavaAnn origin=null
+    BLOCK_BODY
+  FUN name:test2 visibility:public modality:FINAL <> () returnType:Unit flags:
+    annotations:
+      CALL 'constructor JavaAnn(String = ..., Int = ...)' type=JavaAnn origin=null
+        value: CONST String type=kotlin.String value=abc
+        i: CONST Int type=kotlin.Int value=123
+    BLOCK_BODY
+  FUN name:test3 visibility:public modality:FINAL <> () returnType:Unit flags:
+    annotations:
+      CALL 'constructor JavaAnn(String = ..., Int = ...)' type=JavaAnn origin=null
+        value: CONST String type=kotlin.String value=abc
+        i: CONST Int type=kotlin.Int value=123
+    BLOCK_BODY

compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java

@@ -381,6 +381,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
                 runTest("compiler/testData/ir/irText/declarations/annotations/functionsWithAnnotations.kt");
             }
 
+            @TestMetadata("javaAnnotation.kt")
+            public void testJavaAnnotation() throws Exception {
+                runTest("compiler/testData/ir/irText/declarations/annotations/javaAnnotation.kt");
+            }
+
             @TestMetadata("localDelegatedPropertiesWithAnnotations.kt")
             public void testLocalDelegatedPropertiesWithAnnotations() throws Exception {
                 runTest("compiler/testData/ir/irText/declarations/annotations/localDelegatedPropertiesWithAnnotations.kt");