[fixes projectlombok#3665] Add cast for null arguments

src/core/lombok/eclipse/handlers/HandleStandardException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Project Lombok Authors.
+ * Copyright (C) 2021-2024 The Project Lombok Authors.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -70,8 +70,10 @@ private void generateNoArgsConstructor(EclipseNode typeNode, AccessLevel level,
 		if (hasConstructor(typeNode) != MemberExistsResult.NOT_EXISTS) return;
 		int pS = source.get().sourceStart, pE = source.get().sourceEnd;
 
+		Expression messageArgument = new CastExpression(new NullLiteral(pS, pE), generateQualifiedTypeRef(source.get(), TypeConstants.JAVA_LANG_STRING));
+		Expression causeArgument = new CastExpression(new NullLiteral(pS, pE), generateQualifiedTypeRef(source.get(), TypeConstants.JAVA_LANG_THROWABLE));
 		ExplicitConstructorCall explicitCall = new ExplicitConstructorCall(ExplicitConstructorCall.This);
-		explicitCall.arguments = new Expression[] {new NullLiteral(pS, pE), new NullLiteral(pS, pE)};
+		explicitCall.arguments = new Expression[] {messageArgument, causeArgument};
 		ConstructorDeclaration constructor = createConstructor(level, typeNode, false, false, source, explicitCall, null);
 		injectMethod(typeNode, constructor);
 	}
@@ -81,8 +83,10 @@ private void generateMsgOnlyConstructor(EclipseNode typeNode, AccessLevel level,
 		int pS = source.get().sourceStart, pE = source.get().sourceEnd;
 		long p = (long) pS << 32 | pE;
 
+		Expression messageArgument = new SingleNameReference(MESSAGE, p);
+		Expression causeArgument = new CastExpression(new NullLiteral(pS, pE), generateQualifiedTypeRef(source.get(), TypeConstants.JAVA_LANG_THROWABLE));
 		ExplicitConstructorCall explicitCall = new ExplicitConstructorCall(ExplicitConstructorCall.This);
-		explicitCall.arguments = new Expression[] {new SingleNameReference(MESSAGE, p), new NullLiteral(pS, pE)};
+		explicitCall.arguments = new Expression[] {messageArgument, causeArgument};
 		ConstructorDeclaration constructor = createConstructor(level, typeNode, true, false, source, explicitCall, null);
 		injectMethod(typeNode, constructor);
 	}

src/core/lombok/javac/handlers/HandleStandardException.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 The Project Lombok Authors.
+ * Copyright (C) 2021-2024 The Project Lombok Authors.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -81,7 +81,9 @@ private void generateNoArgsConstructor(JavacNode typeNode, AccessLevel level, Ja
 		if (hasConstructor(typeNode) != MemberExistsResult.NOT_EXISTS) return;
 		JavacTreeMaker maker = typeNode.getTreeMaker();
 
-		List<JCExpression> args = List.<JCExpression>of(maker.Literal(CTC_BOT, null), maker.Literal(CTC_BOT, null));
+		JCExpression stringArgument = maker.TypeCast(genJavaLangTypeRef(typeNode, "String"), maker.Literal(CTC_BOT, null));
+		JCExpression throwableArgument = maker.TypeCast(genJavaLangTypeRef(typeNode, "Throwable"), maker.Literal(CTC_BOT, null));
+		List<JCExpression> args = List.<JCExpression>of(stringArgument, throwableArgument);
 		JCStatement thisCall = maker.Exec(maker.Apply(List.<JCExpression>nil(), maker.Ident(typeNode.toName("this")), args));
 		JCMethodDecl constr = createConstructor(level, typeNode, false, false, source, List.of(thisCall));
 		injectMethod(typeNode, constr);
@@ -91,7 +93,9 @@ private void generateMsgOnlyConstructor(JavacNode typeNode, AccessLevel level, J
 		if (hasConstructor(typeNode, String.class) != MemberExistsResult.NOT_EXISTS) return;
 		JavacTreeMaker maker = typeNode.getTreeMaker();
 
-		List<JCExpression> args = List.<JCExpression>of(maker.Ident(typeNode.toName("message")), maker.Literal(CTC_BOT, null));
+		JCExpression stringArgument = maker.Ident(typeNode.toName("message"));
+		JCExpression throwableArgument = maker.TypeCast(genJavaLangTypeRef(typeNode, "Throwable"), maker.Literal(CTC_BOT, null));
+		List<JCExpression> args = List.<JCExpression>of(stringArgument, throwableArgument);
 		JCStatement thisCall = maker.Exec(maker.Apply(List.<JCExpression>nil(), maker.Ident(typeNode.toName("this")), args));
 		JCMethodDecl constr = createConstructor(level, typeNode, true, false, source, List.of(thisCall));
 		injectMethod(typeNode, constr);

test/transform/resource/after-delombok/StandardExceptionWithFields.java

@@ -0,0 +1,25 @@
+public class StandardExceptionWithFields extends Exception {
+	Integer x;
+	Integer y;
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public StandardExceptionWithFields() {
+		this((java.lang.String) null, (java.lang.Throwable) null);1
+	}
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public StandardExceptionWithFields(final java.lang.String message) {
+		this(message, (java.lang.Throwable) null);
+	}
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public StandardExceptionWithFields(final java.lang.Throwable cause) {
+		this(cause != null ? cause.getMessage() : null, cause);
+	}
+	@java.lang.SuppressWarnings("all")
+	@lombok.Generated
+	public StandardExceptionWithFields(final java.lang.String message, final java.lang.Throwable cause) {
+		super(message);
+		if (cause != null) super.initCause(cause);
+	}
+}

test/transform/resource/after-ecj/StandardExceptionWithFields.java

@@ -0,0 +1,19 @@
+import lombok.experimental.StandardException;
+public @StandardException class StandardExceptionWithFields extends Exception {
+  Integer x;
+  Integer y;
+  public @java.lang.SuppressWarnings("all") @lombok.Generated StandardExceptionWithFields() {
+    this((java.lang.String) null, (java.lang.Throwable) null);
+  }
+  public @java.lang.SuppressWarnings("all") @lombok.Generated StandardExceptionWithFields(final java.lang.String message) {
+    this(message, (java.lang.Throwable) null);
+  }
+  public @java.lang.SuppressWarnings("all") @lombok.Generated StandardExceptionWithFields(final java.lang.Throwable cause) {
+    this(((cause != null) ? cause.getMessage() : null), cause);
+  }
+  public @java.lang.SuppressWarnings("all") @lombok.Generated StandardExceptionWithFields(final java.lang.String message, final java.lang.Throwable cause) {
+    super(message);
+    if ((cause != null))
+        super.initCause(cause);
+  }
+}

test/transform/resource/after-ecj/StandardExceptions.java

@@ -2,10 +2,10 @@
 import lombok.experimental.StandardException;
 @StandardException class EmptyException extends Exception {
   public @java.lang.SuppressWarnings("all") @lombok.Generated EmptyException() {
-    this(null, null);
+    this((java.lang.String) null, (java.lang.Throwable) null);
   }
   public @java.lang.SuppressWarnings("all") @lombok.Generated EmptyException(final java.lang.String message) {
-    this(message, null);
+    this(message, (java.lang.Throwable) null);
   }
   public @java.lang.SuppressWarnings("all") @lombok.Generated EmptyException(final java.lang.Throwable cause) {
     this(((cause != null) ? cause.getMessage() : null), cause);
@@ -21,7 +21,7 @@ public NoArgsException() {
     super();
   }
   protected @java.lang.SuppressWarnings("all") @lombok.Generated NoArgsException(final java.lang.String message) {
-    this(message, null);
+    this(message, (java.lang.Throwable) null);
   }
   protected @java.lang.SuppressWarnings("all") @lombok.Generated NoArgsException(final java.lang.Throwable cause) {
     this(((cause != null) ? cause.getMessage() : null), cause);

test/transform/resource/before/StandardExceptionWithFields.java

@@ -0,0 +1,7 @@
+import lombok.experimental.StandardException;
+
+@StandardException
+public class StandardExceptionWithFields extends Exception {
+	Integer x;
+	Integer y;
+}

test/transform/resource/messages-ecj/StandardExceptionWithFields.java.messages

@@ -0,0 +1 @@
+4 The serializable class StandardExceptionWithFields does not declare a static final serialVersionUID field of type long