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From: "sichert at in dot tum.de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/101027] Short-circuit behavior not respected with co_await
 in while head
Date: Wed, 02 Aug 2023 15:10:31 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101027

Moritz Sichert <sichert at in dot tum.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sichert at in dot tum.de

--- Comment #2 from Moritz Sichert <sichert at in dot tum.de> ---
Created attachment 55677
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55677&action=3Dedit
Coroutine that segfaults because it does not short-circuit

I have encountered the same problem where co_await in a logical operation d=
oes
not short-circuit correctly. See the attached example.

The code segfaults because in the condition "foo && co_await foo->foo(123)"=
 it
starts executing the coroutine even if foo is nullptr. For some reason the
error only occurs if the condition is nested in a logical-|| expression.=