Micro, Please create a new bug report at issues.apache.org and I will have a look at what changed. ________________________________ From: Mirco Colletta <mirch...@gmail.com> Sent: Saturday, November 30, 2024 12:20 PM To: dev@groovy.apache.org <dev@groovy.apache.org> Subject: [EXT] Static type checking error from groovy version 4.0.22
External Email: Use caution with links and attachments. Hello, recently I've updated the groovy version of my project (STC with compiler-configuration) from 4.0.21 to 4.0.24 and in the process I've encountered the following unexpected error: [Static type checking] - Cannot return value of type ...PathTreeCell for closure expecting javafx.scene.control.TreeCell<java.lang.Object> (after further investigation it seems introduced from v4.0.22) The error came up calling this method of the JavaFx TreeView (with a closure) https://openjfx.io/javadoc/21/javafx.controls/javafx/scene/control/TreeView.html#setCellFactory(javafx.util.Callback)<https://urldefense.com/v3/__https://openjfx.io/javadoc/21/javafx.controls/javafx/scene/control/TreeView.html*setCellFactory(javafx.util.Callback)__;Iw!!GFN0sa3rsbfR8OLyAw!bhkxAtKCcCoBP6_yq_UXSTJtpdyaaP3fx207yBuyP6IrCOCFSCZBuachWG4pzvoKw3JK31poWMrMii3T5yhIza0$> public final void setCellFactory(Callback<TreeView<T>,TreeCell<T>> value) My code: public class PathTreeCell extends TreeCell<Path> { … } ... treeView.setCellFactory({ p -> var treeCell = new PathTreeCell(this) makeDraggable(treeCell) // This doesn't work anymore // return treeCell return (TreeCell<Path>)treeCell // OK }) This portion of code has always worked for every version of groovy STC I've used up until now. As above, the workaround is effortless, just an explicit cast to TreeCell<Path> Nevertheless I'm worried that it could be some sort of side effect of a regression. Is this an intentional change of behaviour or a bug? Cheers, Mirco
