https://bugs.winehq.org/show_bug.cgi?id=19469 --- Comment #17 from Dmitry Timoshkov <dmitry(a)baikal.ru> --- Created attachment 76438 --> https://bugs.winehq.org/attachment.cgi?id=76438 patch ResEdit calls URLOpenStream() to check for updates. URLOpenStream() calls a helper that starts an asynchronous operation and returns (0x401e8) S_ASYNCHRONOUS. Unfortunately URLOpenStream() implementation uses stack to store an asynchronous callback which probably gets overwritten at some point and callback->lpVtbl becomes NULL, which leads to a crash when a callback is invoked. Attached patch replaces stack by a dynamic memory allocation, and now ResEdit is able to detect that an update is available, and calls MessageBox() to inform the user. Regardless of the answer (Yes/No) right after the MessageBox() returns ResEdit crashes with an illegal instruction exception. It looks like some sort of stack smashing on API return. Probably this could be called a progress, I'm done for now. Everyone is welcome to continue an investigation. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.