File System Access API crash

Vitamins336

Vitamins336

A total browser crash happens with Web Apps and extensions that use File System Access API

taking advantage of new persistent folder and file access permissions.

After loading FileSystemDirectoryHandle from Indexed DB that was stored there during previous browser sessions,

using

FileSystemDirectoryHandle.requestPermission

or

FileSystemDirectoryHandle.queryPermission

results in a crash.

Crash only seems to happen with #file-system-access-persistent-permission enabled (default) in chrome://flags,

disabling this feature prevents it.

How to reproduce:

Open https://vscode.dev and open a local folder, restart browser and try

to open “Recent folder” in the same app.

Crash happens across all Opera browser types with persistent folder and file access permissions, GX, Developer and Normal, doesn’t happen in Chrome, Vivaldi. opera crash.png