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From: "m.krause@tu-harburg.de" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/98704] coroutine_handle::done() == false after promise's
 unhandled_exception() has thrown
Date: Sun, 17 Jan 2021 13:29:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98704

--- Comment #1 from Michael Krause <m.krause@tu-harburg.de> ---
Created attachment 49985
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D49985&action=3Dedit
A possible fix?

Would this be the proper way to fix the problem? That is, instead of genera=
ting
a simple "promise.unhandled_exception()" call, generate:

         try {
             promise.unhandled_exception();
         } catch(...) {
             resume_fn_ptr =3D 0; // ensure that done() returns true
             throw;
         }

Seems to fix my problem, but then I don't know the gcc code base; maybe the
change has undesired side effects. If somebody can confirm this is the way =
to
go, I would be willing to provide a cleaned-up, mergable version including =
test
cases etc...=