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From: "ppluzhnikov at google dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/59656] weak_ptr::lock function crashes when compiling with -fno-exceptions flag
Date: Sat, 18 Jan 2014 16:55:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59656

Paul Pluzhnikov <ppluzhnikov at google dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |ppluzhnikov at google dot com

--- Comment #2 from Paul Pluzhnikov <ppluzhnikov at google dot com> ---
(In reply to Jonathan Wakely from comment #1)
> The standard says exceptions are always enabled, if you disable them you are
> no longer using standard C++, so what it says in the standard doesn't
> necessarily apply.

It's a quality of implementation issue: effectively current std::weak_ptr is
not usable in any multithreaded program built with -fno-exceptions.

> I don't think it would be simple to make this work with -fno-exceptions

We have a patch that makes it work.