https://bugs.winehq.org/show_bug.cgi?id=52396
--- Comment #28 from Alexandre Julliard julliard@winehq.org --- (In reply to Paul Gofman from comment #25)
Yes, it was discussed back then and the workarounds with manually coding .seh exception handlers are not accepted. This is waiting for proper compiler support.
FWIW I don't think that using .seh manually is necessarily a blocker. But it would need to at least not make things worse for platforms that don't have .seh.