hxd.File.browse crashes on drag'n'drop with VSCode debugger

[deepnight]

If you start dragging any file/folder inside a File Open dialog (ie. hxd.File.browse), it crashes HL.

Steps to reproduce:

1. Create an Open File dialog:

hxd.File.browse( function(browser) {
	trace("open: "+browser.fileName);
});

2. Run the app with VScode debugger linked
3. Drag any file/folder inside this dialog
4. Boom

hl.UI.chooseFile (c:\projects\haxetools\haxe\std\hl\UI.hx:209)
hl.UI.loadFile (c:\projects\haxetools\haxe\std\hl\UI.hx:168)
hxd.File.browse (c:\projects\haxetools\haxe\lib\heaps\deepnight\hxd\File.hx:100)
<local function> (c:\projects\labs\fileBrowser\src\Main.hx:12)
<local function> (c:\projects\haxetools\haxe\std\haxe\Timer.hx:143)
<local function> (c:\projects\haxetools\haxe\std\haxe\Timer.hx:76)
haxe.MainLoop.tick (c:\projects\haxetools\haxe\std\haxe\MainLoop.hx:174)
hxd.System.runMainLoop (c:\projects\haxetools\haxe\lib\heaps\deepnight\hxd\System.hl.hx:134)
<local function> (c:\projects\haxetools\haxe\std\haxe\Timer.hx:143)
<local function> (c:\projects\haxetools\haxe\std\haxe\Timer.hx:76)
haxe.MainLoop.tick (c:\projects\haxetools\haxe\std\haxe\MainLoop.hx:174)
haxe.EntryPoint.processEvents (c:\projects\haxetools\haxe\std\haxe\EntryPoint.hx:99)
haxe.EntryPoint.run (c:\projects\haxetools\haxe\std\haxe\EntryPoint.hx:125)

[MSGhero]

I just got the same issue. The error is "Access violation" which I also got when I tried to load a file during its load callback by mistake. Is the issue then in hashlink?

[nspitko]

I took a quick peek and am fairly sure this is cursed.

First, it happens in HL without heaps, so this probably needs to be re-filed on the hashlink repo.

Second, it only happens when the HL debugger is attached. I've tried to catch it with the VS debugger, but you can't have both attached and it works fine in that case, so getting a stack has eluded me thus far

Third... none of this should even matter?! The drag ang drop operation here is a windows internal interaction and should be invisible to HL. The function being called here does not return during a drag operation, so HL shouldn't even be involved here.