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Re: [Qemu-devel] DO_UPCAST confusion
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] DO_UPCAST confusion |
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Date: |
Thu, 22 Oct 2015 16:00:55 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 |
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On 22/10/2015 15:55, Eric Blake wrote:
> Or maybe container_of_first(), to make it obvious that the parent
> class is the first member.
>
> But how often does it really matter whether the container of the
> parent class had the parent as the first member? I guess we'll
> find out as we try to nuke DO_UPCAST.
It's just a compile-time check. DO_UPCAST is basically a type-safe(r)
version of (Foo *)bar.
Paolo
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