Re: [boost] [lockfree] _ENABLE_ATOMIC_ALIGNMENT_FIX for VS 2015Update 2

Subject: Re: [boost] [lockfree] _ENABLE_ATOMIC_ALIGNMENT_FIX for VS 2015Update 2
From: Tim Blechmann (tim_at_[hidden])
Date: 2016-05-10 19:35:04

>> BTW, I thought MSVC did not guarantee ABI compatibility between
>> different versions? Did this change?
> 
> We guarantee bincompat between Updates. We break it between major
> versions.

doesn't the compile error tells us that this is not the case here?

> VS 2015 Update 2 was fixed to handle this correctly, but the fix
> inherently changes layout and breaks binary compatibility. Please
> define _ENABLE_ATOMIC_ALIGNMENT_FIX to acknowledge that you
> understand this, and that everything you're linking has been compiled
> with VS 2015 Update 2 (or later).

in my interpretation of this the update breaks binary compatibility and
by default rejects valid code.