Re: [boost] Silent change in boost 1.36 alignment_of<> template with gcc 4.3

Subject: Re: [boost] Silent change in boost 1.36 alignment_of<> template with gcc 4.3
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2008-11-08 17:05:36

Jon Biggar wrote:

> Unfortunately, this broke some code I had written that did structure 
> introspection, because gcc's __alignof__() returns 8 for double on the 
> x86 architecture, but actually only aligns doubles on 4 byte boundaries 
> inside structures.

I personally never understood why gcc's alignof returns that.
It doesn't even make sense, since the size of double is not a multiple 
of 8, so multiple doubles right after each other can't possibly be 
8-byte aligned.