Kapt3: Fix "Parameter names are clashing in inner class constructor" (KT-14998)

plugins/kapt3/src/org/jetbrains/kotlin/kapt3/stubs/parseParameters.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.kapt3.stubs
 
+import org.jetbrains.kotlin.kapt3.util.isAbstract
 import org.jetbrains.kotlin.kapt3.util.isEnum
 import org.jetbrains.kotlin.kapt3.util.isStatic
 import org.jetbrains.org.objectweb.asm.Type
@@ -45,8 +46,14 @@ internal fun MethodNode.getParametersInfo(containingClass: ClassNode): List<Para
     val parameterInfos = ArrayList<ParameterInfo>(parameterTypes.size - startParameterIndex)
     for (index in startParameterIndex..parameterTypes.lastIndex) {
         val type = parameterTypes[index]
-        var name = parameters.getOrNull(index - startParameterIndex)?.name
+
-                   ?: localVariables.getOrNull(index + (if (isStatic) 0 else 1))?.name
+        // Use parameters only in case of the abstract methods (it hasn't local variables table)
+        var name: String? = if (isAbstract(this.access) && this.name != "<init>")
+            parameters.getOrNull(index - startParameterIndex)?.name
+        else
+            null
+
+        name = name ?: localVariables.getOrNull(index + (if (isStatic) 0 else 1))?.name
                    ?: "p${index - startParameterIndex}"
 
         // Property setters has bad parameter names

plugins/kapt3/test/org/jetbrains/kotlin/kapt3/test/ClassFileToSourceStubConverterTestGenerated.java

@@ -126,6 +126,12 @@ public class ClassFileToSourceStubConverterTestGenerated extends AbstractClassFi
         doTest(fileName);
     }
 
+    @TestMetadata("kt14998.kt")
+    public void testKt14998() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("plugins/kapt3/testData/converter/kt14998.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("modifiers.kt")
     public void testModifiers() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("plugins/kapt3/testData/converter/modifiers.kt");

plugins/kapt3/testData/converter/kt14998.kt

@@ -0,0 +1,10 @@
+class Outer {
+    private inner class Inner(val foo: String, val bar: String)
+    private class Nested(val foo: String, val bar: String)
+
+    fun nonAbstract(s: String, i: Int) {
+
+    }
+
+    abstract fun abstract(s: String, i: Int)
+}

plugins/kapt3/testData/converter/kt14998.txt

@@ -0,0 +1,45 @@
+public final class Outer {
+
+    public final void nonAbstract(java.lang.String s, int i) {
+    }
+
+    public abstract void abstract(java.lang.String s, int i);
+
+    public Outer() {
+        super();
+    }
+
+    private final class Inner {
+        private final java.lang.String foo = null;
+        private final java.lang.String bar = null;
+
+        public final java.lang.String getFoo() {
+            return null;
+        }
+
+        public final java.lang.String getBar() {
+            return null;
+        }
+
+        public Inner(java.lang.String foo, java.lang.String bar) {
+            super();
+        }
+    }
+
+    private static final class Nested {
+        private final java.lang.String foo = null;
+        private final java.lang.String bar = null;
+
+        public final java.lang.String getFoo() {
+            return null;
+        }
+
+        public final java.lang.String getBar() {
+            return null;
+        }
+
+        public Nested(java.lang.String foo, java.lang.String bar) {
+            super();
+        }
+    }
+}